Temat: motion resistance - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Energy efficiency of rubber tracked chassis
Autorzy:: Dudziński, P.
Chołodowski, J.
Powiązania:: https://bibliotekanauki.pl/articles/246674.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: trackled vehicle
rubber track
rubbert belt
motion resistance
internal motion resistance
energy-efficiency
tractive efficiency
Opis:: Nowadays, increasing number of machines and off-road vehicles are equipped with elastomeric, mainly rubber, tracked chassis. Rubber tracks and belts combine the most important advantages of both: pneumatic tires and conventional tracks made from metal links. In spite of significant benefits, rubber tracked chassis is a novel and uncommon design solution, as the application of rubber tracks and belts still brings up many severe problems. Consequently, an urgent need to overcome these problems exists. In The Division of Off-Road Machine and Vehicle Engineering (DORMVE) an intensive research, pertaining to rubber-tracked chassis has been conducted for many years. In the very beginnings, the investigation was carried on in cooperation with German companies INTERTRACTOR, IAMT and IBAF. As a result, numerous original and innovative design solutions, which became a subject of European, American and Japanese patents, were developed. However, some issues have not yet been resolved. Present research of DORMVE is aimed at identification of problems concerning energy efficiency of rubber-tracked chassis. The main objective of current investigation is to improve the energy efficiency. To do so a comprehensive optimisation process is to be carried out. Within the following article, a classification of aforementioned problems will be discussed. Research facilities in laboratory of DORMVE and exemplary results, which have already been obtained, will be also presented.
Źródło:: Journal of KONES; 2016, 23, 2; 97-104
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Relation of motion resistance torque and friction torque in the four stroke engine
Autorzy:: Islam, M. A.
Babiak, M.
Kałużny, J.
Powiązania:: https://bibliotekanauki.pl/articles/242113.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
friction losses
global motion resistance torque
Opis:: Friction resistance identification is indispensable to determine the results of engine modifications which goal was to improve the engine mechanical efficiency. Unfortunately measurement of the friction torque is very difficult to realize because in the total motion resistance torque of the combustion engine the friction torque is only a small part. Resistance torque connected with compression of working medium and also at higher engine speeds with inertia resistance is much higher than friction torque. As a result of research made on the engine test bed the course of resistance connected with realization of the thermodynamic cycle were defined. Sufficient accuracy of these courses allows making an attempt to evolve friction resistance signal from global resistance signal. In the paper comparison of the total motion resistance with results of friction resistance computer simulations for hydrodynamic lubrication of piston-cylinder liner kinematic assembly will be made. It is worth to emphasize that movement resistance researches were made at the serial engine with only slight modifications, which considerably restricts the possibility of diversified engine working conditions influence in relation to the actual engine. Further researches on complete movement resistance simulation of the combustion engine are intended to be realized in order to determine the realizability and probable range of desirable friction losses reduction. Promising results will allow designing the competitive engine relative to present tendencies of "ECOMATIC" engine operation system which was proposed for the first time by Volskswagen.
Źródło:: Journal of KONES; 2011, 18, 2; 185-189
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Rollers for belt conveyors in terms of rotation resistance and energy efficiency
Autorzy:: Opasiak, Tadeusz
Margielewicz, Jerzy
Gąska, Damian
Haniszewski, Tomasz
Powiązania:: https://bibliotekanauki.pl/articles/2203884.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: belt conveyor
roller
motion resistance
przenośnik taśmowy
wałek
opór ruchu
Opis:: The paper shows the results of researching the rollers used in belt conveyors working in a hard coal mine. Rollers should be characterized by low rotation resistance, which results in low power consumption of the propulsion unit. The tests conducted aimed to assess the technical condition of the new C-type rollers after several years of operation in a hard coal mine. The research was carried out from the new approach to the standard issues of roll testing and verification in a hard coal mine. Laboratory tests were combined with testing the entire belt conveyor in terms of power demand. The research was carried out for 3 years and it was monitored how the dynamic resistance of the working rollers changed and how this translates into the power demand consumed by the belt conveyor in a hard coal mine. The aim of the research was a new approach to the research of rollers used in conveyors operating in a mine.
Źródło:: Transport Problems; 2022, 17, 2; 57--68
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Comparative analysis of the operating indexes of manually and automatically controlled passenger car powertrain system at variable load states
Autorzy:: Graba, M.
Mamala, J.
Bieniek, A.
Hennek, K.
Powiązania:: https://bibliotekanauki.pl/articles/245358.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel consumption
spark ignition engine
variable load
engine efficiency
motion resistance
Opis:: This article reports the results of a study into operating parameters of a system consisting of an SI engine and a powertrain in a Fiat Panda passenger car in the conditions of a variable load. The analysis was primarily concerned with the variability of fuel consumption resulting of the changing load applied to the driving wheels in the conditions of a test performed on chassis dynamometer for manual and automatic controlled transmission gear change The test bench included a dedicated driving cycle, which was developed as cycle with periodically changed constant linear speed of the car every 10 km/h. According to the vehicle set speed, the load on its wheels was determined by the basic resistance as rolling resistance, air resistance and resistance corresponding to road inclination. Each period of a drive cycle corresponding to steady state driving gave the average instantaneous values of drive system performance indicators. The waveforms of these indicators were recorded and then averaged and presented as representative points of the powertrain system that were analysed. The focus of the study involved the identification of the points characterized with the minimum specific fuel consumption and impact of type of powertrain control on emission of CO2 from passenger car SI engines.
Źródło:: Journal of KONES; 2017, 24, 4; 39-46
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Vegetable oils derivatives as the modifiers of the lubricating properties of water
Autorzy:: Sułek, M.W.
Sas, W.
Przondo, J.
Powiązania:: https://bibliotekanauki.pl/articles/778150.pdf
Data publikacji:: 2007
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: ekologiczne ciecze obróbkowe
ciecz obróbkowa
opór ruchu
zużycie
właściwości przeciwzatarciowe
ecological cutting fluids
motion resistance
wear
antiseizure properties
Opis:: Water has been used as a lubricating medium in a number of applications in tribology. Its insufficient lubricating properties are modified by appropriate additives. The aim of the tribological studies presented in this paper is an application of a mixture containing triglyceride ethoxylates and partial glycerides as well as esters and a block copolymer as additives. All the components are commercially available and relatively cheap. In order to examine the aqueous solutions, two kinds of tests were carried out on a four-ball apparatus: at the fixed load - measurements of the friction coefficient and wear as a function of time and seizure tests which made it possible to determine the scuffing load (Pt), the seizure load (Poz) and the limiting pressure of seizure (p(oz)). Changes in the quantities measured were analyzed as a function of concentrations ranging from 0.001% to 100%. In the fixed load tests the coefficient of friction decreased almost eight-fold, reaching the lowest value of 0.06 at above 0.1% concentration of the additive. Wear decreased over 3.5-fold. In the seizure tests a relatively high efficiency of the additive package was observed at the concentration of the order of the thousandth part of one percent. The compositions reached the maximum anti-seizure capacity at the concentrations of 4 and 10%. It is particularly interesting to note that the stability of the lubricating film being formed was characterized by the scuffing load. The maximum value of Pt was about 4kN high. Summing up, on the basis of the results obtained it may be concluded that the choice of package additives was correct and it effectively modified the lubricating properties of water.
Źródło:: Polish Journal of Chemical Technology; 2007, 9, 3; 147-150
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The influence of selected parameters on magnetic fluid seal tightness and motion resistance
Wpływ wybranych parametrów konstrukcyjnych na szczelność i opory ruchu uszczelnień z cieczą magnetyczną
Autorzy:: Szczęch, M.
Horak, W.
Salwiński, J.
Powiązania:: https://bibliotekanauki.pl/articles/190777.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: magnetic fluid seal
ferrofluid
motion resistance
seal tightness
critical pressure
uszczelnienia z cieczą magnetyczną
ferrociecz
moment oporu
szczelność uszczelnienia
Opis:: Magnetic fluid seals belong to the class of non-contact seals. They are used as protective seals for vacuum systems, high speed shafts, precision mechanics, and electromechanical devices. The proper functioning of the magnetic fluid seal is related to creating and maintaining the continuity of the fluid ring on the sealing stage. This is achieved by appropriately shaped magnetic field distribution in the region of the sealing stage. Consequently, one of the main issues with the construction of such seals is to determine the distribution of the magnetic field in this region. This paper presents the results of analytical calculations and numerical simulations, based on which the influence of selected geometric parameters on the critical pressure and motion resistance was determined.
Uszczelnienia z cieczą magnetyczną należą do klasy uszczelnień bezstykowych znajdują zastosowanie m.in., jako uszczelnienia ochronne w układach pracujących w próżni, w uszczelnieniach wałów szybkoobrotowych, urządzeń mechaniki precyzyjnej oraz przemyśle elektromechanicznym. Zachowanie poprawnego funkcjonowania uszczelnienia z cieczą magnetyczną związane jest z koniecznością wytworzenia i utrzymania ciągłości płynnego pierścienia ferrocieczy. Realizowane jest to za pomocą odpowiednio ukształtowanego rozkładu pola magnetycznego w szczelinie roboczej uszczelnienia. W związku z tym jednym z głównych zagadnień związanych z konstrukcją tego rodzaju uszczelnień jest określenie rozkładu pola magnetycznego w rejonie występu uszczelniającego. W pracy przedstawiono wyniki obliczeń analitycznych oraz symulacji numerycznych, na podstawie których określono wpływ wybranych parametrów konstrukcyjnych na kluczowe wielkości funkcjonalne uszczelnienia, tj. dopuszczalne ciśnienie oraz opory ruchu.
Źródło:: Tribologia; 2017, 274, 4; 71-76
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The Effect of the Formation of Polymer/Surfactant Complexes on Selected Tribological Properties of Their Aqueous Solutions
Wpływ tworzenia kompleksów polimerów z surfaktantami na wybrane właściwości tribologiczne ich wodnych roztworów
Autorzy:: Sułek, M. W.
Jedynak, R.
Powiązania:: https://bibliotekanauki.pl/articles/188741.pdf
Data publikacji:: 2018
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: lubricating properties
motion resistance
antiseizure properties
aqueous solutions
polymer/surfactant
complexes
sodium lauryl sulfate
polyvinylpyrrolidone
właściwości smarne
opory ruchu
właściwości przeciwzatarciowe
wodne roztwory
kompleksy polimerów z surfaktantami
laurylosiarczan sodu
poliwinylopirolidon
Opis:: Aqueous solutions of sodium alkyl sulphate (surfactant) and polyvinylpyrrolidone (polymer) whose physicochemical properties, including complexing ability, have been widely described in the literature were proposed as a model lubricant. It has been assumed that aqueous solutions of these compounds will favourably modify lubricating properties of water under high load conditions. For this purpose, measurements were made on a four-ball apparatus (T-02 Tester) for aqueous solutions of these compounds. Two kinds of tests were carried out: at constant loads (2, 3, and 4 kN) and variable loads within the range of 0 to 7.2 kN. Unexpectedly, high decreases in motion resistance and wear as well as an increase in antiseizure properties were found in relation to water as a base. The results obtained are so promising that solutions with an optimized composition can find practical applications. The surprisingly high effectiveness of the additives used results from the formation of surfactant/polymer complexes. These adducts adsorb at the interface, and, under friction conditions, they form a lubricant film capable of carrying high loads.
Jako modelową substancję smarową zaproponowano wodne roztwory alkilosiarczanu sodu (surfaktant) i poliwinylopirolidonu (polimer), których właściwości fizykochemiczne, w tym zdolność do kompleksowania, zostały szeroko opisane w literaturze. Postawiono tezę, że wodne roztwory tych związków będą korzystnie modyfikowały właściwości smarne wody w warunkach wysokich obciążeń. W tym celu dla wodnych roztworów tych związków wykonano pomiary na aparacie czterokulowym (Tester T-02). Przeprowadzono 2 rodzaje testów: przy stałych obciążeniach (2, 3, 4 kN) oraz przy zmiennym obciążeniu w przedziale zmienności od 0 do 7,2 kN. Stwierdzono nieoczekiwanie duże obniżenie oporów ruchu i zużycia oraz wzrost właściwości przeciwzatarciowych w odniesieniu do wody jako bazy. Uzyskane wyniki są na tyle obiecujące, że roztwory o zoptymalizowanym składzie mogą znaleźć zastosowanie praktyczne. Niespodziewanie wysoka efektywność stosowanych dodatków jest konsekwencją tworzenia kompleksów surfaktanta z polimerem. Addukty te adsorbują na granicy faz, a w warunkach tarcia tworzą film smarny zdolny do przenoszenia wysokich obciążeń.
Źródło:: Tribologia; 2018, 281, 5; 117-122
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Comparison of mileage fuel consumption with the natural operation of the three different cycles
Autorzy:: Sitnik, L. J.
Magdziarz-Tokłowicz, M.
Walkowiak, Wł.
Wróbel, R.
Włostowski, R.
Powiązania:: https://bibliotekanauki.pl/articles/243579.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel consumption
mileage fuel consumption
resistance to motion
energy consumption of traffic
vehicle operation
SI engine
Opis:: In the automotive industry in the world continuously being sought universal driving cycle. The test should closely match the fuel consumption and emissions of toxins in the fumes of the test vehicle in its real operating conditions [4]. However, in the previously developed solid driving tests established velocity profiles differ significantly from actual driving conditions. The difference in fuel consumption, comparing the natural operation of the NEDC test reaches an average of 18%. The new version of the driving cycle should be more realistic to the everyday use of additional equipment and gadgets that are installed in modern vehicles [1]. The impact on fuel consumption by vehicles may be conditioned not only by its size and weight, but also by the geometry of the track motion, forces causing the motion and the forces acting on the car when driving on curved tracks. The vehicle encounters and overcomes all the forces that act on it while driving-resistance movement. In the energy intake through the vehicle runs in the motor changes at the expense of the energy of fuel consumed. The driving force performs work on a given stretch of road balancing (predominant) friction. On the basis of the calculated resistance movement and the energy consumption of the movement in the selected object was a comparison of the actual consumption of fuel in the vehicle with the ignition spark. Analysis was performed and found differences in three cycles: urban, extra-urban and combined.
Źródło:: Journal of KONES; 2014, 21, 4; 439-444
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The Analysis of Motion Dynamics and Resistance of the Multipurpose Boat Operating in Shallow Water
Autorzy:: Kulczyk, T.
Górnicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/116257.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:: Hydrodynamics
Motion Dynamics
Shallow Water
Miltipurpose Boat
Boat's Motion
Computer Simulation
CFD Method, Resistance
Opis:: Polish market of small boats has been developed very dynamically in recent years. Market competition forces the shipyards to build new more efficient hull forms and to cut the cost of production as well. This is why modern computer simulation programs are used more often by naval architects. Another trend is to design more universal ships that may be used by larger number of diversified customers. This paper presents project proposal of multipurpose boat hull form. The boat was design to fulfil the requirements imposed by public services like water police, fire brigades, and border guards. It is supposed to be operated on unexplored floodplains and other type shallow waters. The analysis of boat’s motion was based on computer simulations. The resistance curve was evaluated with two methods: comparison study of model test results of similar ships and CFD methods. The results obtained from Ansys Fluent and FINE/Marine systems were compared in this paper. It was shown that taking into consideration dynamic trim and sinkage has a significant impact on free surface capture and resistance values.
Źródło:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 3; 359-363
2083-6473
2083-6481
Pojawia się w:: TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Determination of seakeeping performance for a case study vessel by the strip theory method
Autorzy:: Niklas, Karol
Karczewski, Artur
Powiązania:: https://bibliotekanauki.pl/articles/1573815.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: ship design
seakeeping
ship motion
added resistance
towing tank
strip theory
Opis:: The increase of seakeeping performance is of particular importance for car and passenger ferries, service ships in the gas and oil extraction industry and offshore wind power farm industry, as well as for special purpose ships (including military applications). In the water areas of the Baltic Sea, North Sea, and Mediterranean Sea, which are characterised by a short and steep wave, the hull shape has a substantial impact on the operational capacity and propulsion efficiency of the ship, as well as on comfort and safety of navigation. The article analyses selected aspects of seakeeping for four variants of a selected case study vessel, indicating practical limitations of the strip method. The analysed aspects included hull heaving and pitching, added resistance, Motion Thickness Indicator (MSI), and Subjective Magnitude (SM). Experimental tests were also performed in the towing tank. Their comparison with the numerical results has indicated high inaccuracy of the strip method. What is more, the simplified representation of hull shape used in the strip method makes it impossible to analyse the effect of hull shape changes on the predicted seakeeping characteristics. Especially for the case of head wave, neglecting highly non-linear phenomena, such as slamming or head wave breaking, in strip method-based computer simulations will significantly decrease the reliability of the obtained results. When using the strip method, the seakeeping analysis should be complemented with model tests in a towing tank, or by another more complex numerical analysis, such as CFD for instance.
Źródło:: Polish Maritime Research; 2020, 4; 4-16
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Shaft Bearing of Wind Turbine with Vertical Axis of Rotation
Łożyskowanie wału siłowni wiatrowej o pionowej osi obrotu
Autorzy:: Grzegorzek, Wojciech
Adamecki, Daniel
Mikuła, Jarosław
Borek, Wojciech
Głuszek, Grzegorz
Mikuła, Stanisław
Powiązania:: https://bibliotekanauki.pl/articles/2116058.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: green energy
low resistance to motion
prosumer wind turbine
quiet running
long service life
renewable energy sources
RES
water-lubricated hybrid bearing
zielona energia
OZE
prosumencka elektrownia wiatrowa
niskie opory ruchu
łożysko hybrydowe smarowane wodą
cichobieżność
wysoka trwałość
Opis:: This article describes a new design solution for a hybrid bearing intended for use in prosumer wind turbines with a vertical axis of rotation of the turbine rotor. The automatic rotational speed-dependent load-switching, lubrication and cooling systems applied in the hybrid bearing ensure a particularly long service life and highly quiet running while maintaining high energy efficiency over the full rotational speed range of shafts with turbine rotors. The hybrid bearing design has been adapted to the use of lubricating fluids with the lowest possible viscosity, including oil-water emulsions and even water itself. The use of water as a lubricant makes the bearing system highly environmentally friendly and completely fire-safe.
W artykule opisano nowe rozwiązanie konstrukcyjne łożyska hybrydowego przeznaczonego do zastosowania w prosumenckich siłowniach wiatrowych o pionowej osi obrotu wirnika turbinowego. Zastosowane w łożysku hybrydowym układy automatycznego przełączania obciążenia w zależności od prędkości obrotowej, smarowania i chłodzenia zapewniają uzyskanie szczególnie długiej trwałości i dużej cichobieżności przy zachowaniu wysokiej sprawności energetycznej w pełnym zakresie prędkości wirowania wałów z wirnikami turbinowymi. Konstrukcja łożyska hybrydowego przystosowana została do wykorzystania cieczy smarnych o możliwie niskiej lepkości, w tym emulsji olejowo-wodnych, a nawet samej wody. Wykorzystanie wody jako środka smarnego powoduje, że łożyskowanie ma wysokie walory ekologiczne i całkowite bezpieczeństwo pożarów
Źródło:: Tribologia; 2022, 1; 9--17
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: On the modeling of car passenger ferryship design parameters with respect to selected sea-keeping qualities and additional resistance in waves
Autorzy:: Cepowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/258828.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: sea-keeping qualities
roll-on/roll-off ferryship
rolling
motion sickness index
lateral accelerations
additional resistance in waves
ship design parameters
modeling
artificial neural networks
optimization
Pareto method
Opis:: This paper presents the modeling of car passenger ferryship design parameters with respect to such design criteria as selected sea-keeping qualities and additional resistance in waves. In the first part of the investigations approximations of selected statistical parameters of design criteria of ferryship were elaborated with respect to ship design parameters. The approximation functions were obtained with the use of artificial neural networks. In the second part of the investigations design solutions were searched for by applying the singleand multi-criterial optimization methods. The multi-criterial optimization was performed by using Pareto method. Such approach made it possible to present solutions in such form as to allow decision makers (shipowner, designer) to select solutions the most favourable in each individual case.
Źródło:: Polish Maritime Research; 2009, 3; 3-10
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Determination of optimum hull form for passenger car ferry with regard to its sea-keeping qualities and additional resistance in waves
Autorzy:: Cepowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/258898.pdf
Data publikacji:: 2008
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: sea-keeping qualities
roll-on/roll-off ferry ship
rolling
transverse accelerations
vertical accelerations
motion sickness index
additional resistance in waves
ship hull form
ship design parameters
artificial neural networks
fuzzy logic
Opis:: This paper presents a method which makes it possible to determine optimum hull form of passenger car ferry with regard to selected sea-keeping qualities and additional resistance in waves. In the first phase of investigations a hull form characterized by the highest qualities was selected from the list of similar ships. Next, its optimum dimension ratios were determined. Design criteria were formulated by using a method based on deterministic scenarios, but objective functions of partial targets were determined in the form of artificial neural networks. To select the best design variants elements of fuzzy logic were used, that made it possible a.o. to show merits of the design by means of linguistic variables. Such approach made it possible to find the best hull form and its dimensions from the point of view of all considered criteria simultaneously.
Źródło:: Polish Maritime Research; 2008, 2; 3-11
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Design parameters optimisation of ROPAX ferry using seakeeping characteristics and additional wave resistance
Optymalizacja parametrów projektowych promu pasażersko-samochodowego pod kątem wybranych właściwości morskich i dodatkowego oporu na fali
Autorzy:: Cepowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/257284.pdf
Data publikacji:: 2008
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:: właściwości morskie
prom ro-ro
kołysanie boczne
przyspieszenie poprzeczne
dodatkowy opór na fali
parametry projektowe
sztuczna sieć neuronowa
optymalizacja wielokryterialna
metoda Pareto
logika rozmyta
sea-keeping
ro-pax ferry
rolling
motion sickness index
additional wave resistance
design parameters
artificial neuron network
optimisation
Pareto method
fuzzy logic
Opis:: This paper presents the multi-criteria design parameters of the optimisation of the ROPAX ferry using sea-keeping characteristics and additional wave resistance. The design criteria were formed using the method based on deterministic scenario and the partial objective functions were determined as artificial neuron networks. The design parameters' optimisation was carried out with the Pareto method. The best design variants were chosen using the elements of fuzzy logic that allowed, among other things, to present design quality with linguistic variables. This approach allowed choosing the best variant concerning all criteria at the same time.
W artykule przeprowadzono wielokryterialną optymalizację parametrów projektowych promu pasażersko-samochodowego pod kątem wybranych właściwości morskich i dodatkowego oporu statku na fali. Kryteria projektowe sformułowano posługując się metodą opartą na scenariuszach deterministycznych, natomiast funkcje celów cząstkowych wyznaczono w postaci sztucznych sieci neuronowych. Optymalizację parametrów projektowych przeprowadzono metodą Pareto. Do wyboru najlepszych wariantów projektowych wykorzystano elementy logiki rozmytej, co pozwoliło m.in. na przedstawienie walorów projektu za pomocą zmiennych lingwistycznych. Takie podejście umożliwiło wybór wariantu najlepszego pod kątem wszystkich kryteriów jednocześnie.
Źródło:: Problemy Eksploatacji; 2008, 2; 149-158
1232-9312
Pojawia się w:: Problemy Eksploatacji
Dostawca treści:: Biblioteka Nauki

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