Temat: dynamic simulation - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Analiza sterowania wałkiem krzywkowym w autorskim silniku spalinowym
Analysis of camshaft control in unconventional combustion engine
Autorzy:: Bajerlein, M.
Daszkiewicz, P.
Frąckowiak, D.
Domański, M.
Stobnicki, P.
Tematy:: symulacja dynamiczna
Autodesk Inventor
dynamic simulation; Pokaż więcej
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Powiązania:: https://bibliotekanauki.pl/articles/314467.pdf Link otwiera się w nowym oknie
Opis:: W ramach pracy w programie Autodesk Inventor stworzono model silnika Szymkowiaka wraz z jego zmodyfikowaną wersją z koncepcyjnym wahaczem. Następnie przeprowadzono symulację dynamiczną obu układów korbowo-tłokowych dla różnych stopni sprężania sterowanych wałkiem krzywkowym. Uzyskane wyniki symulacji dynamicznej wykorzystano do badania procesów zachodzących podczas procesu spalania w programie AVL Fire. Symulację przeprowadzono dla jednakowych warunków początkowych.
For the simulation there was created model of Szymkowiak' sengine and it's version with modified swingarm, in Autodesk Inventor. Dynamic symulation of piston movement has been made for both engines with selected compression ratios. Results of piston movement has been used to create simulation of combustion process in AVL Fire. Simulation for both engines has been made for the same boundaryconditions.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Some aspects of dynamic riveting simulations
Autorzy:: Szymczyk, E.
Jachimowicz, J.
Puchała, K.
Tematy:: riveting
dynamic simulation
residual stress state; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/248006.pdf Link otwiera się w nowym oknie
Opis:: Riveting is a commonly used (especially in aircraft structures) method of joining metal and composite components. The methods of forming solid shank rivets can be classified in two types: static and dynamic. The static method is the most efficient one. Regrettably, its application is limited. A popular upsetting tool used in an aircraft is a pneumatic riveter. The rivet driving requires a few hammer strokes. The total stress in a riveted joint depends on the residual and applied stress. Residual post-riveting stress fields are widely accepted to have a beneficial influence on the fatigue life of aircraft structures. The analysis is carried out for a solid mushroom rivet (made of PA25 alloy) joining two sheets (made of 2024T3 alloy). Nonlinear dynamic simulations of the upsetting process are carried out. Simulation of the riveting process is significantly influenced by a material model. The numerical calculations are performed for three different cases of upsetting described by the formed rivet head diameters 1.4d, 1.5d and 1.6d, respectively. The rivet head diameter and, consequently, the residual stress state depend on hammer stroke energy. It has a significant influence on a plastic region around the rivet hole, whereas the influence of a number of strokes can be neglected. The strain rate in both local and global (average) formulation is analysed in the paper. For one hammer stroke, the global strain rate of the rivet shank is about 1.0 thousand per second. The local strain rate is about two times greater than the global one, so a strain rate factor has an effect on the residual stress state. For a few hammer strokes, the strain rate is lower than for one stroke; however, it increases a little in each stroke. The hole deformation can be treated as a function of the internal energy of the sheet. The lower total energy of the part the greater influence of the strain rate on the internal energy is observed.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Testing virtual prototype of a new product in two simulation environments
Autorzy:: Łukaszewicz, Krzysztof
Tematy:: CAD
FEA
dynamic simulation
virtual prototyping; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/407282.pdf Link otwiera się w nowym oknie
Opis:: This paper is a case study conducted to present an approach to the process of designing new products using virtual prototyping. During the ﬁrst stage of research a digital geometric model of the vehicle was created. Secondly it underwent a series of tests utilising the multibody system method in order to determine the forces and displacements in selected construction nodes of the vehicle during its movement on an uneven surface. In consequence the most dangerous case of loads was identiﬁed. The obtained results were used to conduct detailed strength testing of the bicycle frame and changes its geometry. For the purposes of this case study two FEA software environments (Inventor and SolidWorks) were used. It has been conﬁrmed that using method allows to implement the process of creating a new product more eﬀectively as well as to assess the inﬂuence of the conditions of its usage more eﬃciently. It was stated that using of diﬀerent software environments increases the complexity of the technical process of production preparation but at the same time increases the certainty of prototype testing. The presented example of simulation calculations made for the bicycle can be considered as a useful method for calculating other prototypes with high complexity of construction due to its systematized character of chosen conditions and testing procedure. It allows to verify the correctness of construction, functionality and perform many analyses, which can contribute to the elimination of possible errors as early as at the construction stage.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Performance comparison of different control strategies for heat exchanger networks
Autorzy:: Mahitthimahawong, S.
Chotvisut, Y.
Srinophakun, T.
Tematy:: control
dynamic simulation
performance
process control
stability; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/778442.pdf Link otwiera się w nowym oknie
Opis:: In this article, the dynamic responses of heat exchanger networks to disturbance and setpoint change were studied. Various control strategies, including: proportional integral, model predictive control, passivity approach, and passivity-based model predictive control were used to monitor all outlet temperatures. The performance of controllers was analyzed through two procedures: 1) inducing a ±5% step disturbance in the supply temperature, or 2) tracking a ±5°C target temperature. The performance criteria used to evaluate these various control modes was settling time and percentage overshoot. According to the results, the passivity-based model predictive controllers produced the best performance to reject the disturbance and the model predictive control proved to be the best controller to track the setpoint. Whereas, the ensuing performance results of both the PI and passivity controllers were discovered to be only acceptable..
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Design and Dynamics Modeling for Electric Vehicle
Autorzy:: Tomasikova, M.
Brumerčík, F.
Nieoczym, A.
Tematy:: mathematical model of vehicle
multibody system simulation
dynamic simulation; Pokaż więcej
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Powiązania:: https://bibliotekanauki.pl/articles/117709.pdf Link otwiera się w nowym oknie
Opis:: This paper descript software for vehicle simulation and mathematical models that describe the motion of the vehicle. A dynamic simulation model of vehicle was developed using Matlab/Simulink and SimDriveline toolbox. The model has a configurable structure that is suitable to simulation with multiple levels. The powertrain system model developed using Simulink and SimDrivline could also be used as a generic, modular and flexible vehicle modeling platform to support the integration of powertrain design and control system optimization.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Modelling and simulation of repeated charging/discharging cycles for selected nickel-cadmium batteries
Autorzy:: Chmielewski, A.
Szurgott, P.
Tematy:: dynamic simulation
charging/discharging cycle
MATLAB Simulink; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/241905.pdf Link otwiera się w nowym oknie
Opis:: The main aim of the paper is to present a developed methodology of simulation of the energy efficiency of a selected energy storage unit. The authors focused their actions on batteries that could be the base for an energy storage system possible to apply in a modernized hybrid-shunting locomotive. Three different nickel-cadmium batteries were selected as representatives for the study. Simulation was focused on repeated cycles of charging and discharging the batteries. The simulation model generally consists of three main components: a specified load cycle, a dynamic model of the DC electrical machine and a model of the Ni-Cd battery. The input data for the battery model is based mostly on the parameters provided by the manufacturer data sheets. However, an internal resistance had to be measured for each battery. Conducted simulations provided information about the electromotive force, state of charge, an average efficiency of the battery, as well as the temperature changes during the cycle. The proposed approach to the battery simulation can be also applied for the loading cycles similar to those that occur during the actual operation of the locomotive. The current study is a part of the project focused on modernization of the diesel-electric shunting locomotive to the hybrid one.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Numerical Analysis of Roller Bearing
Autorzy:: Kohár, R.
Brumerčík, F.
Lukáč, M.
Nieoczym, A.
Tematy:: tapered roller bearings
dynamic simulation
axial load force; Pokaż więcej
Wydawca:: Polskie Towarzystwo Promocji Wiedzy
Powiązania:: https://bibliotekanauki.pl/articles/117746.pdf Link otwiera się w nowym oknie
Opis:: The aim of this paper is to detail the creation of a large tapered roller bearing model with flexible body cages in the Adams program suite for subsequent dynamic analysis and to obtain information about kinematic and dynamic relationships of steel and plastic cages under various operating conditions. The bearing model was made to closely resemble its real-life counterpart, which allows us to estimate load conditions, dynamic conditions of individual bearing parts and interactions between them.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: An influence of adhesion model on the results of locomotives dynamics simulation
Vlijanie modeli sceplenija na rezultaty modelirovanija dinamicheskogo povedenija lokomotivov
Autorzy:: Golubenko, A.
Kostyukevich, A.
Tsyganovskiy, I.
Tematy:: locomotive
dynamic behaviour
modelling
wheel-rail contact
adhesion
dynamic simulation
railway track
longitudinal vibration; Pokaż więcej
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Powiązania:: https://bibliotekanauki.pl/articles/791892.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Approach to verification of a roll cage survival space with finite element analysis
Wstępna weryfikacja przestrzeni bezpiecznej klatki bezpieczeństwa przy użyciu metody elementów skończonych
Autorzy:: Peliński, Jakub
Ptak, Mariusz
Tematy:: roll cage
FEM
dynamic simulation
crash test
klatka
symulacja dynamiczna
test zderzeniowy; Pokaż więcej
Wydawca:: Politechnika Śląska. Katedra Biomechatroniki
Powiązania:: https://bibliotekanauki.pl/articles/2201479.pdf Link otwiera się w nowym oknie
Opis:: In the study, the extensive validation of the original project of roll cage construction designed according to FIA standards is presented. In order to test the impact protection of the vehicle occupant site the verification of survival space was performed. For that purpose, a standardized manikin was utilized. The crashworthiness of the structure was examined by means of Finite Elements discrete model over a number of dynamic explicit simulations. The roll cage was in particularly designed for the passenger car. The important finding from the study is the need for additional side impact energy absorption ability of the cage.
Praca przedstawia badania dotyczące zweryfikowania konstrukcji autorskiego projektu klatki bezpieczeństwa do samochodu osobowego zaprojektowanej zgodnie z obowiązującymi standardami FIA. Zaproponowane rozwiązanie poddano testom dynamicznym w celu zbadania odporności na zdarzenia używając Metody Elementów Skończonych. W celu sprawdzenia przestrzeni bezpiecznej kierowcy użyto standardowego manekina. Uzyskane wyniki sygnalizują, że pomimo zachowania wytycznych ze standardu FIA klatka nie oferuje wystarczającej ochrony kierowcy w przypadku zderzeń bocznych.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Dynamic analysis and experiment of underactuated double-pendulum anti-swing device for ship-mounted jib cranes
Autorzy:: Wang, Jianli
Liu, Kexin
Wang, Shenghai
Chen, Haiquan
Sun, Yuqing
Niu, Anqi
Li, Haolin
Tematy:: ship-mounted cranes
underactuated double-pendulum
dynamic simulation
anti-swing control; Pokaż więcej
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:: https://bibliotekanauki.pl/articles/32895577.pdf Link otwiera się w nowym oknie
Opis:: This paper proposes a three degrees of freedom parallel anti-swing method by the main and auxiliary cables to address the problems related to underactuated double-pendulum anti-swing for a ship-mounted jib crane. By analysing the dynamic coupling relationship between the swing of the hook and the payload, it seeks to establish an accurate dynamic model of the anti-swing device under the ship’s rolling and pitching conditions, and discusses the influence of ship excitation, the crane state, load posture and anti-swing parameters on the in-plane and out-of-plane swing angles. The analysis shows that the primary pendulum reduces the in-plane angle by 90% and the out-of-plane angle by 80%, the in-plane angle of the secondary pendulum is reduced by 90%, and the out-of-plane angle is reduced by 80%. The reliability of the simulation data is verified through experiments.
Dostawca treści:: Biblioteka Nauki

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