Simulation Research for Self-Energizing Leveling Systems

2011 ◽  
Vol 211-212 ◽  
pp. 494-499
Author(s):  
Xiao Bin Ning ◽  
Cui Ling Zhao ◽  
Ji Sheng Shen
Keyword(s):  
Simulation Model ◽  
Shock Absorber ◽  
Simulation Method ◽  
Vehicle Model ◽  
Ride Height ◽  
Simulation Research ◽  
Vehicle Simulation ◽  
The Road ◽  
Full Vehicle ◽  
Internal Configuration

In order to decay vibration and recycle energy, the shock absorber that is self-energizing leveling systems was researched. The co-simulation method was adopted. A mathematical model for the shock absorber was built using the software MSC.EASY5, and the establishment of this model was based on the analysis of internal configuration and characteristics of valves. Debugging simulation of this model was also conducted. Vehicle simulation model was built using MSC.ADAMS. The assembly between vehicle simulation model and the shock absorber was realized through co-simulation between ADAMS/CAR and MSC.EASY5. After the integration of the full vehicle model the road test simulation with the input of random road surface signal was conducted. The simulation results shows that self-energizing leveling systems can partly recycle this energy which can be used to adjust ride height due to load change of automobile. This shock absorber is improving the ride performance of vehicle.

Dynamic Analysis of Self-Energizing Shock Absorber of Suspension for Energy-Regenerative

2011 ◽  
Vol 80-81 ◽  
pp. 746-751
Author(s):  
Ji Sheng Shen ◽  
Xiang Man Ye ◽  
Xiao Bin Ning
Keyword(s):  
Dynamic Analysis ◽  
Simulation Model ◽  
Shock Absorber ◽  
Vehicle Model ◽  
Ride Height ◽  
Vehicle Simulation ◽  
System A ◽  
Nonlinear Vehicle Model ◽  
Multi Body ◽  
Internal Configuration

Design of self-energizing shock absorber of suspension of SVU, a multi degree of freedom mechanism, is a challenge. In order to decay vibration and recycle energy, self-energizing shock absorber was researched. This paper primarily focuses on kinematics and dynamic analysis in multi-body system (MBS) and validation of system. A simulation model for self-energizing shock absorber was built using the software MATLAB, and the establishment of this model was based on the analysis of internal configuration and characteristics of valves. Vehicle simulation model was built using MBS. The assembly between vehicle simulation model and the shock absorber was realized through co-simulation between MBS and MATLAB. The optimal design of suspension is investigated, in order to improve vertical ride and road-friendliness of vehicles, while maintaining enhanced roll stability. A nonlinear vehicle model is developed to study vertical as well as roll dynamics of vehicles. The simulation results shows that suspension with self-energizing shock absorber can partly energy-regenerative which can be used to adjust ride height due to load change of automobile. Self-energizing shock absorber is also improving the ride performance of vehicle.

Advanced parameter analysis for damper influence on ride dynamics

2017 ◽  
Vol 24 (8) ◽  
pp. 1393-1411 ◽  
Author(s):  
M Durukan Bedük ◽  
Kemal Çalışkan ◽  
Roman Henze ◽  
Ferit Küçükay
Keyword(s):  
Simulation Model ◽  
Ride Comfort ◽  
Parameter Analysis ◽  
Frequency Dependent ◽  
Vehicle Simulation ◽  
Vehicle Suspensions ◽  
Full Vehicle ◽  
Damping Characteristics ◽  
Conflicting Objectives ◽  
Vehicle Suspension System

The conflicting objectives related to damping characteristics of vehicle suspensions promote further development of new damper concepts. The effort is no longer limited to finding the optimal damper velocity–force characteristics for a vehicle suspension system. Besides this basic design parameter, the amplitude- and frequency-dependent characteristics of dampers are also taken into consideration. The first step in adjustment of the velocity, displacement, and frequency-dependent damper characteristics is to understand the effect of these characteristics on the dynamics of the vehicle. Therefore, in this study, the interaction between the damper characteristics and vehicle ride response is analyzed by using a detailed mathematical damper model together with a verified full vehicle simulation model. A semi-parametric detailed damper model is first verified through physical testing of different dampers and then it is fully parameterized and implemented inside the full vehicle simulation model. A parameter variation analysis is performed to show the effect of the different damper characteristics on vehicle ride comfort.

A Full Vehicle Model for the Development of a Variable Camber Suspension

2007 ◽  
Author(s):  
Isao Kuwayama ◽  
Fernando Baldoni ◽  
Federico Cheli
Keyword(s):  
Simulation Models ◽  
Dynamics Simulation ◽  
Tire Model ◽  
Electronic Components ◽  
Vehicle Model ◽  
Active Systems ◽  
Additional Degree ◽  
Vehicle Simulation ◽  
Full Vehicle ◽  
Multi Body

The accuracy of the recent vehicle dynamics simulation technology, represented by Multi-Body Simulations along with reliable tire models, has been remarkably progressing and provides reasonable simulation results not only for conventional passive vehicles but also for advanced active vehicles equipped with electronic components; however, when it comes to advanced vehicle applications with complex active systems, the complexity causes a longer simulation time. On the other hand, even though simple numerical vehicle simulation models such as single-track, two-track and a dozen degrees of freedom (dofs) models can provide less information than those of multi-body models, they are still appreciated by specific applications particularly the ones related to the development of active systems. The advantages of these numerical simulation models lie in the simulation platform, namely the Matlab/Simulink environment, which is suitable for modeling electronic components. In this paper, an 18 dofs vehicle model has been proposed for the development of a type of active suspension named Variable Camber which has an additional degree of freedom in camber angle direction and a description of the models and some preliminary results are reported: the control strategy for the variable camber suspension will be published ([3]). The model can reproduce a passive vehicle with a passive suspension as well; all the necessary dimensions, parameters, and physical properties are derived from a specific multi-body full vehicle model which has been fully validated with respect to a real one on the track. As for a tire model, Magic Formula 5.2 has been implemented on both the numerical and the multi-body vehicle models respectively so that the same tire model can be applied.

Ride Comfort Analysis of Sedan Car using Quarter Car Suspension System Modelling and Simulation

2018 ◽  
Vol 9 (5) ◽  
Author(s):  
C. Qiu
Keyword(s):  
Simulation Model ◽  
Automobile Industry ◽  
Degrees Of Freedom ◽  
Ride Comfort ◽  
High Tech ◽  
System Modelling ◽  
Front Suspension ◽  
Vehicle Simulation ◽  
The Road ◽  
Quarter Car

With the application of high-tech technology in automobile industry, more attention is given to the ride performance which will directly affect the comfort and safety of the passenger/driver. This paper is focused on the study of vehicle ride performance using vehicle simulation model. Two degrees of freedom quarter car model of vehicle with Macpherson front suspension from Santana 2000Gsi saloon car is established. The parameters of the simulation model include the suspension stiffness, damping coefficient of shock absorber and the road excitation. The road surface excitation is gained by using white noise integral method. By inputting the calculated basic parameters into suspension simulation model, the ride performance can be evaluated. The parameters can be adjusted such that the vibration characteristics to be more intuitive, which further laid the basis for accurate vibration control.

Transient dynamic behavior of tire traversing obstacles in full vehicle scenario

2019 ◽  
Vol 234 (7) ◽  
pp. 2001-2013
Author(s):  
Yanlin Zhang ◽  
Tao Zhou ◽  
Xiaoguang Yang ◽  
Lichen Wang ◽  
Mengyan Zang
Keyword(s):  
Dynamic Behavior ◽  
Simulation Method ◽  
Vehicle Speed ◽  
Vehicle Model ◽  
Transient Dynamic ◽  
Impact Performance ◽  
Full Vehicle ◽  
Parametric Effects ◽  
Vehicle Test ◽  
Modeling Strategy

This paper describes an effective simulation method for studying transient dynamic behavior of tire traversing severe obstacles in full vehicle scenario. First of all, a detailed finite element tire model is developed and validated with the corresponding physical tests. Then, four tire models are assembled with the suspension components to form a full vehicle model. The vehicle modeling strategy is investigated and then applied successfully in vehicle obstacle impact simulations. The comparisons between simulation results with corresponding vehicle test results show the vehicle model has high accuracy in replicating the behavior of vehicle traversing obstacles. Based on this, a specific example of vehicle traversing the comfort obstacle is analyzed. The parametric effects of vehicle speed and obstacle height on tire impact performance are investigated.

On the performance of rheological shock absorber models in full vehicle simulation

2007 ◽  
Vol 45 (11) ◽  
pp. 981-999 ◽  
Author(s):  
Christoph Zach ◽  
Werner Mack ◽  
Gabriele Fruhmann ◽  
Werner Tieber
Keyword(s):  
Shock Absorber ◽  
Vehicle Simulation ◽  
Full Vehicle

scholarly journals A Series Hybrid Electric Vehicle Simulation and Analysis of Fuel Consumption Alteration in Different Driving Cycles

2018 ◽  
Vol 1 (1) ◽  
pp. 138-147
Author(s):  
Onur Serin ◽  
Dilara Albayrak Serin
Keyword(s):  
Fuel Consumption ◽  
Electric Vehicle ◽  
Hybrid Electric Vehicle ◽  
Vehicle Model ◽  
Vehicle Simulation ◽  
The Road ◽  
Driving Cycles ◽  
Series Hybrid Electric Vehicle ◽  
Vehicle Technology ◽  
Hybrid Electric

With decrease in amount of carbon fuels and aims of creating a cleaner environment, researches on hybrid electric vehicle technology have increased in years. The purpose of this study is to observe the change in fuel consumption of a simulated hybrid electric vehicle in different driving cycles. For this research, a series hybrid electric vehicle is modelled on MATLAB/Simulink. Subsequently, for simulating the tour of the vehicle, multiple driving cycles are modelled on the software and fed to vehicle model. For instance FTP-75, NEDC and UDDS are benefited and also a route from Turkey, the road from Istanbul to Ankara is modelled and simulated. Behavior of the vehicle on this route is also observed. After analyzing vehicle behavior in all these cycles, fuel consumption in each case is calculated and compared. As the result of this research, the most affordable cycle for this vehicle model is selected and possible ways of decreasing fuel consumption in other driving cycles is discussed.

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