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Tytuł:
Studies on the supporting structure of the ”crossbow” rocket launcher in the aspect of improvement of its resistance properties
Autorzy:
Rybak, P.
Borkowski, W.
Hryciów, Z.
Michałowski, B.
Wiśniewski, A.
Wysocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/243483.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
structure
dynamical loads
experimental research
numerical research
Opis:
This paper presents the results of the studies on a special vehicle Polaris Ranger 6×6 800 equipped with the ”Crossbow” antiaircraft rocket launcher, manufactured by TELESYSTEM-MESKO Sp z o. o. Implementation and Manufacture Centre. The supporting structure of the launcher made the main object of the analysis. The essential goal of that undertaking was to obtain a structure of resistance assuring reliable system operation in various conditions of use. In order to reach that goal, the experimental as well as the model tests have been performed on the launcher vehicle. The experimental tests were carried out during multi-variant rides on the paved roads and in the wilderness of significant level of unevenness. Significant information on the level, directions and nature of affecting dynamic loads and the effects of their influence on the vehicle elements. The analysis of obtained results also provided the data required for a development of a model of the object of the studies. A MES model of the object of the studies was prepared in the LS-DYNA system. A high pressure was put on modelling a complex chassis of the launcher and mutual reaction of assemblies and parts. A generalized issue on the own properties was solved – frequencies and associated forms of vibrations of own main assemblies were designated. Resistance calculations were carried out for assumed loads. In principle, loads imposed by normative requirements for a particular class of armament and military equipment were assumed. Loads resulting from potential conditions of use and installation on other carriers were also included. The tests were performed for various load variants. Sensitive elements of the chassis were modified and highly satisfying results were obtained. It gives a reason to think that the chassis is resistant to expected and difficult operation conditions and assures that the whole system will work reliably.
Źródło:
Journal of KONES; 2013, 20, 3; 353-358
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on the effectiveness of the innovative protective structure for vehicles
Autorzy:
Borkowski, W.
Rybak, P.
Hryciów, Z.
Starczewski, L.
Gmitrzuk, M.
Szcześniak, K.
Powiązania:
https://bibliotekanauki.pl/articles/243785.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
structure
dynamical loads
experimental research
numerical research
Opis:
This article presents results of the research on developed innovative protective structure for vehicles. The fundamental objective of executed work was to check the correctness of assumed assumptions, shape and geometry of the solution and configuration of components that affect the protective effectiveness during the impact of the explosive. In order to reach that goal, both model tests and experimental tests were carried out. The experimental tests were carried out on the real object. Significant information about the level, directions and nature of affecting dynamic loads were obtained as well as information about their impact on particular structure elements. The MES numerical model of the research object has been developed in LS-Dyna system. Special emphasis was placed on the mapping of complex geometry, configuration of components and their interactions. Test calculations were carried out and then the resistance calculations were made. As a load, generating post-explosion impact wave, the load imposed by normative requirements concerning the way of explosive arrangement as well as the shape and weight. The analysis of obtained results of the experimental and numerical tests allows for high evaluation of effectiveness of proposed solution.
Źródło:
Journal of KONES; 2015, 22, 1; 29-36
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ehksperimentalnye i teoreticheskie issledovanija gidrodinamiki kipjashhego sloja drevesnogo topliva
Experimental and theoretical researches of hydrodynamics of the fluidized bed of wood waste
Autorzy:
Red'ko, A.
Pivnenko, J.
Powiązania:
https://bibliotekanauki.pl/articles/78160.pdf
Data publikacji:
2015
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
fluidized bed
wood waste
hydrodynamics
experimental research
theoretical research
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2015, 17, 6
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Teoreticheskie i ehksperimental'nye issledovanija gorizontal'nogo otstojjnika s poristojj peregorodkojj
Theoretical and experimental researches of horizontal sump with porous wall
Autorzy:
Ehpojan, S.
Sukhorukov, D.
Ajjrapetjan, T.
Powiązania:
https://bibliotekanauki.pl/articles/76416.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
horizontal sump
porous wall
concrete wall
theoretical research
experimental research
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2014, 16, 6
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Acoustic Properties of a Metamaterial with a Multi-Ring Structure
Autorzy:
Szczepański, Grzegorz
Podleśna, Marlena
Morzyński, Leszek
Włudarczyk, Anna
Powiązania:
https://bibliotekanauki.pl/articles/31339790.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
acoustic metamaterials
numerical research
experimental research
finite element method
multiring structures
Opis:
In this article, the authors present the geometry and measurements of the properties of an acoustic metamaterial with a structure composed of multiple concentric rings. CAD models of the structure were developed and subsequently used in numerical studies, which included the study of resonant frequencies using the Lanczos method and an analysis of sound pressure level distribution under plane wave excitation using the finite element method. Subsequently, experimental tests were carried out on models with the same geometry produced with three different materials (PLA, PET-G, and FLEX) using a fused deposition modeling 3D printing technique. These tests included: determining insertion loss for a single model based on tests using the measurement window of a reverberation chamber and determining transmission loss through tests in a semi-anechoic chamber. Sound wave resonance was obtained for frequencies ranging from 1700 to 6000 Hz. Notably, the experimental studies were carried out for the same structure for which numerical tests were conducted. The physical models of a metamaterial were manufactured using three different readily available 3D printing materials. The results of laboratory tests confirm that the created acoustic metamaterial consisting of multi-ring structures reduces noise in medium and high frequencies.
Źródło:
Archives of Acoustics; 2023, 48, 4; 497-507
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kultura twórczych dyskusji. Komunikat z badań eksperymentalnych
Culture of Constructive Discussions. A Statement from Experimental Research
Autorzy:
Okraj, Zofia
Powiązania:
https://bibliotekanauki.pl/articles/2171495.pdf
Data publikacji:
2014-02-28
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
discussion
creative thinking
experimental research
Opis:
The article presents the results of experimental research on the culture of creative thinking that consists of its: characteristics, purposes, contents, principles, forms, methods of discussions, and didactic means used to activate students’ creative thinking. The research has also allowed to learn how important in the process of stimulation of students’ creative thinking are such conditions as: atmosphere of discussion, appearance of critical expressions destroying ideas (“idea killers”), and moderators’ personality traits. The main results of the described cycle of creative discussion are: stimulation of students’ creative thinking, teaching students the culture of creative discussion and strategy of “attacking” problems by generating many various and original ideas to solve problems, increasing students’ awareness of their own potential of creativity, and obtaining the ability of discussing and cooperating in teams / groups.
Źródło:
Kultura i Edukacja; 2014, 1(101); 72-98
1230-266X
Pojawia się w:
Kultura i Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of theoretical and experimental research results of infrared vibrowave conveyer dryer main parameters
Autorzy:
Palamarchuk, I.
Tsurkan, O.
Palamarchuk, V.
Powiązania:
https://bibliotekanauki.pl/articles/792635.pdf
Data publikacji:
2015
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
conveyor
vibrowave conveyor
seed
oil crop
drying
working condition
comparative analysis
theoretical research
experimental research
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2015, 15, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Researches of the system of neutralization process control in the production of ammonium nitrate on the basis of rheological transitions principles
Issledovanija sistemy upravlenija processom nejjtralizacii v proizvodstve ammiachnojj selitry na osnove principov reologicheskikh perekhodov
Autorzy:
Stentsel, I.
Porkuyan, O.
Prokaza, E.
Powiązania:
https://bibliotekanauki.pl/articles/793294.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
neutralization
process control
ammonium nitrate
rheological transition
control system
mathematical model
theoretical research
experimental research
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy intensity of the electric vehicle
Autorzy:
Dziubiński, M.
Drozd, A.
Adamiec, M.
Siemionek, E.
Powiązania:
https://bibliotekanauki.pl/articles/102305.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
energy intensity
electric vehicle
experimental research
Opis:
Continuous energy intensity is a relationship between continuous energy intensity and energy intensity of movement. In the paper we proposed to analyze energy intensity of the movement, as the size specifying the power demand to the wheel drive and presented the balance of power of an electric car moving in the urban cycle. The object of the test was a hybrid vehicle with an internal combustion engine and electric motor. The measurements were carried out for 4 speeds and 2 driving profiles.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 4; 27-34
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat abstraction from contact zone of working elements of disc brake
Оtvod teploty s zony kontakta rabochikh ehlementov diskovogo tormoza
Autorzy:
Osenin, Y.Y.
Sosnov, I.
Sergienko, O.
Biloborodova, I.
Powiązania:
https://bibliotekanauki.pl/articles/793407.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
disk brake
friction coefficient
braking
effectiveness
mechanical braking
cooling system
locomotive disk brake
experimental research
theoretical research
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 2
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania nad słyszeniem absolutnym u dzieci w wieku wczesnoszkolnym
Research in Perfect Pitch in Children at Early School Age
Autorzy:
Kozłowska-Lewna, Alicja
Powiązania:
https://bibliotekanauki.pl/articles/521964.pdf
Data publikacji:
2011
Wydawca:
Akademia Muzyczna im. Stanisława Moniuszki w Gdańsku
Tematy:
perfect pitch
experimental research
early music education
Opis:
The author presents an overview of contemporary research in perfect pitch and the absolute method, discusses results of her survey on the importance of perfect pitch in musicians, and presents results of experimental activities stimulating perfect pitch in children at early school age. The aim of the experimental research was to answer the question of whether it was possible to effectively stimulate perfect pitch abilities in children at early school age. An experimental ear training program with the use of the absolute method was directed onto children in year one of music school. The effects of the stimulation were applied to two control groups trained by using the relative mFollowing the study, it was found that: perfect pitch can be shaped in a conscious way; the ability develops primarily in early childhood; the process of forming the capacity for absolute hearing begins with memorizing the seven standard pitches of the diatonic scale of C major. The research also confi rmed a high attractiveness of perfect pitch for professional musicians and proved that the ability to consciously stimulate the capacity for absolute hearing in children aged 7–8 years speaks for the use of the absolute method in the initial stage of studies in music schools.
Źródło:
Aspekty Muzyki; 2011, 1; 101-122
2082-6044
Pojawia się w:
Aspekty Muzyki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aerodynamic Research on the Midsection of a Long Turbine Blade
Autorzy:
Šimurda, D.
Luxa, M.
Šafařík, P.
Synáč, J.
Powiązania:
https://bibliotekanauki.pl/articles/1943255.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska
Tematy:
transonic flow
turbine blade cascade
experimental research
Opis:
The paper is concerned with experimental aerodynamic research on the midsection of a 1220mm long turbine rotor blade. Optical as well as pneumatic measurements of the midsection blade cascade have been performed in a suction type high-speed wind tunnel. The results of measurements are analyzed and discussed. Interferograms and schlieren pictures taken in a wide range of isentropic exit Mach numbers and incidence angles exhibit the existence of several phenomena occurring in the transonic flow field at certain conditions concerning the exit Mach number and the angle of incidence. A flow separation taking place at an extreme negative incidence has been found to produce an additional loss of 6%. The presence of the reflection of an exit shock wave on the suction side of the neighbouring profile has been found to have a substantial influence on the losses, since the loss coefficient value has increased about 10% in cases without the reflection, i.e. the cases at a high exit Mach number and a high positive angle of incidence. Several reflection types have been observed and described.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2008, 12, 3-4; 135-145
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of Forces During the Extraction Process
Autorzy:
Biały, W.
Wedzicha, J.
Nordin, V.
Powiązania:
https://bibliotekanauki.pl/articles/2065025.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
workability
device
component forces
experimental research
measurement
Opis:
The article briefly describes the factors affecting the workability of coal seams. Next, the construction and principle of operation of a globally unique device for determining the values of forces involved in the cutting process (coal extraction) named POU-BW/01-WAP by the author were presented. It is the only device in the world that determines two of the three component forces that are involved in the cutting process. To this end, two independent measuring blocks were used, which consist of tensometric force sensors: cutting (Fs) and pick downforce (Fd). To register these forces, a real pick was used, which is used in longwall drum shearers - a conical pick. The device has ATEX certification that allows working in real conditions, as a device intended for use in potentially explosive atmospheres - in accordance with Directive 94/9/EC. The instrument has received many awards at global inventiveness and innovative solution trade shows.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 117--128
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental research of the reconfigurable multimodular mechatronic system for inside work
Autorzy:
Kotova, E.
Korotynsky, A.
Kirchenko, V.
Zharov, V.
Powiązania:
https://bibliotekanauki.pl/articles/386402.pdf
Data publikacji:
2008
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
robotyka
badanie eksperymentalne
multimodular system
robotics
experimental research
Opis:
The urgency of the multimodularity concept in a modern robotics is connected to increase of requirements to the created mobile technical systems intended for performance of the broad variety of tasks, including problems of development of space, safety of ability to live and counteraction to terrorism. The modular approach is considered to be the most perspective. There are considered functionalities of multimodular system of wheel type and given characteristics of working breadboard models of modules. The purposes are formulated and results of experimental researches are given.
Źródło:
Acta Mechanica et Automatica; 2008, 2, 4; 44-50
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Orzęski jako wskaźniki przebiegu oczyszczania ścieków na złożach zraszanych. Część II. Badania eksperymentalne
Ciliata kak ukazatel processa ochistki stochnykh vod na orashaemykh zalezhakh
Ciliata as an index of sewage decontamination on trickling filters. II. Experiments
Autorzy:
Stanislawska, J.
Powiązania:
https://bibliotekanauki.pl/articles/877249.pdf
Data publikacji:
1963
Wydawca:
Narodowy Instytut Zdrowia Publicznego. Państwowy Zakład Higieny
Tematy:
orzeski
zloza zraszane
oczyszczanie sciekow
badania terenowe
badania eksperymentalne
sukcesja
Ciliata
spray deposit
sewage treatment
field research
experimental research
succession
Źródło:
Roczniki Państwowego Zakładu Higieny; 1963, 14, 6
0035-7715
Pojawia się w:
Roczniki Państwowego Zakładu Higieny
Dostawca treści:
Biblioteka Nauki
Artykuł

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