Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "force constant" wg kryterium: Temat


Wyświetlanie 1-7 z 7
Tytuł:
Studies on the Ballistic Parameters of a Deterred Triple Base Propellant Used in Large Caliber Ammunition
Autorzy:
Dahiwale, Sunil M.
Bhongale, Chetan J.
Roy, Shubhankar
Navle, Pradeep B.
Asthana, Shrinandan N.
Powiązania:
https://bibliotekanauki.pl/articles/357930.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
progressive burning
deterred propellant
BuNENA
pressure index
force constant
burning rate
chamber pressure
Opis:
In this work, the energetic plasticizer N-n-butyl-N-(2-nitroxyethyl)nitramine (Bu-NENA) was used as a deterrent coating for a triple base propellant (TBP) that finds application in large caliber guns. Closed vessel (CV) evaluation was performed to study the ballistic performance of the deterred propellant. A TBP containing nitrocellulose (NC), nitroglycerine (NG) and nitroguanidine (NQ) was coated with an energetic plasticizer using a solution of Bu-NENA. The Bu-NENA coated propellant exhibited inhibition to burning resulting in a reduction in the values of the ballistic parameters viz. (dP/dt)max, burning rate coefficient (β) and relative vivacity (RV), while the pressure index (α) and rise time were increased. The trends obtained during this work display the potential of Bu-NENA as deterrent.
Źródło:
Central European Journal of Energetic Materials; 2019, 16, 3; 449-467
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of Vibration Behaviors of Turning Machining with the Constant Surface Speed Effect
Autorzy:
Royandi, Muhamad Aditya
Effendi, Iman Apriana
Ibrahim, Bustami
Hung, Jui Pin
Powiązania:
https://bibliotekanauki.pl/articles/2123279.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
constant surface speed
cutting force
machining vibration
turning process
Opis:
Turning machining is a complex process in which many variables can influence the desired results. Among those variables, cutting tool vibration and cutting force greatly affect the precision of the workpiece and the tool life. While the tool vibration and cutting force in feeding are primarily determined by cutting speed, feed rate, and depth of cut as well as the dynamic characteristics of the machining system. This paper presents an analytical modeling approach to investigate the effects of machining conditions based on the governing equation of the machining system. The machining behaviors under different conditions were simulated by Simulink block diagram. Basically, the cutting speed is considered the parameter dominating the vibration behavior and hence is served as the primary input for the simulation. The effectiveness of constant surface speed (CSS mode) or function G96 in the turning process was further examined through comparisons of the variations of vibration and cutting force generated in feeding with different conditions.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 3; 134--145
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Modeling of the Work-Hardening Curve
Autorzy:
Pluta, P.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/411581.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Hardening curve
yield stress
Relative deformation
Relative deformation constant;
Absolute strain constant
Stress potential fields
Strain potential fields
Yield force
Plastic rigidity
Plastic energy
Yield work
Opis:
The paper aims at a critical analysis of the existent description of plastic strengthening/ work-hardening curve. The adequate description of the curve, having a physical sense, has been proposed. The description begins from the very source which is the primary, general differential equation. That source was used to formulate the characteristics of the studied system. Then the analytical solution of the dependence between the yield stress and the relative deformation is provided. The description of the work-hardening curve has been developed to further form a proper dependence of the yield force on the absolute yield strain. Other functional characteristics, namely the coefficient of the plastic rigidity, yield work, and the plastic potentials, have also been formed.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 4; 73-90
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat Absorption by a Thermal System
Autorzy:
Pluta, Z.
Hrynkiewicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/411922.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
heat
quantum nature of the reality
temperature
specific heat
heat force
heat potential
potential field
temperature constant
thermal energy
Opis:
The work deals with revealing the quantum nature of the heat absorption phenomenon by a thermal system, describing the phenomenon with a proper energetic interpretation. At first, the existent description of the heat absorption phenomenon by a system has been described. Then the mechanicalthermal analogy was introduced, using it for a better explanation of the determined thermal notions. A set of characteristics of the heat absorption phenomenon was developed by taking advantage of this analogy. The starting point from the source thermal characteristics, being differential dependence of thermal force on temperature, has been regarded. That made it possible to achieve a detail solution, being the reason model of the described natural system, which is the model having a physical sense.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 1; 17-32
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the Groundless Use of Mathematics Concerning the d’Alembert’s Rule
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/412567.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
d'Alembert's rule
Fictional inertia force
identity
space-time
time constant
potential field
Atwood device
Co-existence state
Energetic state
dynamics
Opis:
The paper discusses the groundless use of mathematics. This question has been explained mainly based on example of the so called d`Alembert’s rule which unfortunately still functions in science none the less it has been based on a fiction, contrary to the truth cognition as the fundamental purpose of science. That pejorative feature of the mentioned paradigm is marked very clearly in the paper to evaluate it negatively as the only one possible note. Next the adequate characteristics of variable body motion has been presented and the description of Atwood device given in view of explaining the essence of a real equilibrium of the system of material bodies where their real inertia is of importance. In conclusion the characteristics of real inertia force being the measure of this inertia is presented. The erroneous up-to-date view concerning the measure of body inertia, assuming mass as the measure of this magnitude enabling free manipulation of the acceleration value, has been revealed. At the end it is stressed that acceleration is always positive in its nature and is existent in each condition of the material reality.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 7, 2; 85-101
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adequate Theory of Vertical Motion of a Mass-Elastic System
Autorzy:
Pluta, Z.
Hryniewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/412071.pdf
Data publikacji:
2013
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Theory of oscillation motion
Vertical mass-elastic system
Free harmonic oscillator motion
potential field
force characteristics
Source equation of path/way length
time constant
Opis:
The paper covers an adequate theory on vertical motion of the mass-elastic system. This system is an oscillator with the motion being a free harmonic motion. The first extended link of the consideration presents a critical analysis of the existent knowledge referred to this subject. Then the energetic states of the oscillator have been determined. Next the force characteristics of the free harmonic motion of the oscillator are presented. A general source equation of the path/way length and the resulting detailed forms, signalizing extensive possibilities to build up the characteristics, have been presented. Finally the connections between the characteristics of real and simulative motions were derived. It should be added that this first mentioned motion is the subject of adequate description presented here. The simulated motion is referred to the existent classical theory which has been subjected under a critical consideration.
Źródło:
International Letters of Chemistry, Physics and Astronomy; 2013, 6; 116-136
2299-3843
Pojawia się w:
International Letters of Chemistry, Physics and Astronomy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie rozruchu przenośnika taśmowego z wykorzystaniem silników pierścieniowych oraz sprzęgieł hydrodynamicznych
Comparison of belt conveyor start-up with slip-ring motors and fluid couplings
Autorzy:
Kaszuba, M.
Powiązania:
https://bibliotekanauki.pl/articles/348931.pdf
Data publikacji:
2011
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
system rozruchowy
przenośniki taśmowe
silnik pierścieniowy
opory rozruchowe
sprzęgło o stałym napełnieniu
sprzęgło o zmiennym napełnieniu
silnik asynchroniczny
wykres sił
porównanie
start-up system
belt conveyors
slip-ring motor
start-up resistors
constant-fill coupling
control-fill fluidcoupling
asunchronus motor
force diagram
comparison
Opis:
Podstawowym układem rozruchowym stosowanym do rozruchu ciężkich przenośników taśmowych w górnictwie odkrywkowym jest układ składający się z silnika pierścieniowego oraz rezystorów rozruchowych. Rozruch przenośnika realizowany jest według charakterystyki mechanicznej silnika, modyfikowanej poprzez kolejne włączanie tzw. rezystorów rozruchowych lub zastosowanie tzw. rozrusznika cieczowego. Powszechnie stosowany, jest pierwszy z wymienionych sposobów rozruchu przenośników. Rozruch taki powoduje skokowe zmiany momentu mechanicznego wytwarzanego przez silnik i powoduje powstawanie w taśmie nadmiernych naprężeń. W artykule Autor próbuje znaleźć odpowiedź na pytanie, czy dodatkowe wyposażenie napędów przenośników w sprzęgła hydrodynamiczne o stałym napełnieniu lub w sprzęgła regulowane pozwoliłoby na naprężeń powstających w taśmie podczas rozruchu.
Basic start-up system used for heavy-duty belt conveyors in open-cast mining comprises a slip-ring motor and start-up resistors. Conveyor start-up is effected according to the motor mechanical characteristics, modified by successive switching of so-called start-up resistors or so-called fluid starters. The former solution is more common in surface belt convenior drives. Unfortunately, it involves rapid changes of the torque generated by the motor and can lead to undesirable high tensions in the belt. This paper attempts to answer the question whether an addition use of constant-fill or control-fill fluid couplings in the drives could lead to reduction of tensions in the belt during the start-up.
Źródło:
Górnictwo i Geoinżynieria; 2011, 35, 3/1; 157-167
1732-6702
Pojawia się w:
Górnictwo i Geoinżynieria
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies