Establishment and Simulation of Nonlinear Dynamic Model of Finished Automobile

2014 ◽  
Vol 670-671 ◽  
pp. 709-714
Author(s):  
Li Yun Li
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Ride Comfort ◽  
Structural Parameters ◽  
The Body ◽  
Lateral Acceleration ◽  
Driving Safety ◽  
Vehicle Body ◽  
Nonlinear Dynamic Model ◽  
Steering Angle

This paper established the nonlinear dynamic model of finished automobile to study the influence of suspension structural parameters, automotive braking and steering on the vehicle driving comfort and handling stability. The simulation results show that in the vehicle steering process, the body roll changed indirectly the tire lateral force, which had the impacts of yaw and lateral movement, and the interaction between the suspension and steering between systems is very significant especially under condition of the uneven road excitation. When the peak of the tire steering angle increased, the roll angle of vehicle body became larger and larger, followed by the change of body posture and the deterioration of ride comfort. With the increase of the steering angle, the lateral acceleration of the vehicle became larger and larger, and even resulted in tire skidding, thus reducing the driving safety of the vehicle.

Dynamic Simulation of Large Flow Solenoid Valve

2016 ◽  
Author(s):  
Z. Liu ◽  
X. Han ◽  
Y. F. Liu
Keyword(s):  
Dynamic Model ◽  
Dynamic Simulation ◽  
Dynamic Characteristics ◽  
Nonlinear Dynamic ◽  
Structural Parameters ◽  
Solenoid Valve ◽  
Simulation Software ◽  
Experimental Results ◽  
Nonlinear Dynamic Model ◽  
Large Flow

A nonlinear dynamic model of a large flow solenoid is presented with the multi-physics dynamic simulation software called SimulationX. Validation is performed by comparing the experimental results with the simulated ones. The dynamic characteristics of the large flow solenoid valve are analyzed. Different structural parameters are modified in this research and the diameter of the orifice is proved to be one of the most important parameters which influences the pressure response most.

Optimal Design Parameters of Cab’s Isolation System for Vibratory Roller Using a Multi-Objective Genetic Algorithm

2018 ◽  
Vol 875 ◽  
pp. 105-112 ◽  
Author(s):  
Van Quynh Le ◽  
Khac Tuan Nguyen
Keyword(s):  
Genetic Algorithm ◽  
Optimal Design ◽  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Ride Comfort ◽  
Design Parameters ◽  
Nonlinear Dynamic Model ◽  
Nsga Ii ◽  
Isolation System ◽  
Multi Objective

In order to improve the vibratory roller ride comfort, a multi-objective optimization method based on the improved genetic algorithm NSGA-II is proposed to optimize the design parameters of cab’s isolation system when vehicle operates under the different conditions. To achieve this goal, 3D nonlinear dynamic model of a single drum vibratory roller was developed based on the analysis of the interaction between vibratory roller and soil. The weighted r.m.s acceleration responses of the vertical driver’s seat, pitch and roll angle of the cab are chosen as the objective functions. The optimal design parameters of cab’s isolation system are indentified based on a combination of the vehicle nonlinear dynamic model of Matlab/Simulink and the NSGA - II genetic algorithm method. The results indicate that three objective function values are reduced significantly to improve vehicle ride comfort.

Nonlinear dynamic model of air spring with a damper for vehicle ride comfort

2017 ◽  
Vol 89 (2) ◽  
pp. 1545-1568 ◽  
Author(s):  
Hengjia Zhu ◽  
James Yang ◽  
Yunqing Zhang ◽  
Xingxing Feng ◽  
Zeyu Ma
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Ride Comfort ◽  
Nonlinear Dynamic Model ◽  
Air Spring

Modeling and Movement Simulation of Tractor-Semitrailer

2014 ◽  
Vol 998-999 ◽  
pp. 438-441
Author(s):  
Chuan Hui Liu ◽  
Yi Fang ◽  
Feng Du ◽  
Rong Wei Shen
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Model Simulation ◽  
Slip Angle ◽  
Tire Model ◽  
Nonlinear Dynamic Model ◽  
Software Environment ◽  
Steering Angle ◽  
Set Up ◽  
Movement Simulation

The Gim tire model was adopted to set up the nonlinear dynamic model of tractor-semitrailer. Choosing slip angle of tractor, yaw velocity of tractor and semitrailer as variables, the state space equation was proposed. Based on the established nonlinear dynamic model, simulation in Matlab/Simulink software environment was described. The simulation consults suggest that for tractor-semitrailer, it would lose stability with higher speed and bigger steering angle. The conclusion can be useful for the system design of tractor-semitrailer.

Development and validation of a simplified nonlinear dynamic model of a passive twin-tube hydraulic shock absorber

2020 ◽  
pp. 107754632094795
Author(s):  
Verónica Santos Arconada ◽  
Jon García-Barruetabeña
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Shock Absorber ◽  
Driving Simulator ◽  
Ride Comfort ◽  
Hydraulic Shock ◽  
Nonlinear Dynamic Model ◽  
Proposed Model ◽  
Hydraulic Shock Absorber ◽  
Development And Validation

In this study, the development and validation of a simplified nonlinear dynamic model of a passive twin-tube hydraulic shock absorber is presented. First, the experimental dynamic response is characterized. Then, the numerical model is presented where flow, pressure, displacement, and velocity are considered. Finally, the numerical–experimental correlation is performed on force-movement dynamic behavior to prove the accuracy of the proposed model. The final goal of the model is to be integrated in a real-time driving simulator for ride comfort studies.

Analysis of Tourism Ecology Capacity Based on the Nonlinear Dynamic Model

2009 ◽  
Vol 11 (2) ◽  
pp. 163-168
Author(s):  
Long LV ◽  
Zhenfang HUANG ◽  
Jiang WU
Keyword(s):  
Dynamic Model ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Model
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