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Dynamics of the vehicle suspension system analysis and simulation test

Author: ZhangPeiPei
Tutor: LiuJingYu
School: Chang'an University
Course: Vehicle Engineering
Keywords: Heavy vehicle suspension Virtual prototyping technology The simulation Handling and stability
CLC: U463.33
Type: Master's thesis
Year: 2005
Downloads: 849
Quote: 10
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Abstract


Virtual prototyping technology is today 's state-of-the-art mechanical design , analysis concept and direction , with the continuous development of the computer and software technology , multi-body system dynamics as the core of the virtual prototype dynamic simulation technology is gradually applied to automotive design , shorten vehicle development cycles, reduced development costs, and improve product design and manufacturing quality . Paper of Shaanxi Automobile design a new heavy-duty vehicles ( Mitsuhashi fully independent suspension ), the use of virtual prototyping technology to its suspension system and vehicle dynamics simulation , to provide a theoretical basis for the actual development of the models . The paper by means of virtual prototyping technology software ADAMS, establish the suspensions 3D parametric model of multi-body kinematics and dynamics , the front and rear suspension simulation test analysis , examine the front wheel alignment and suspension performance with wheel hop variation of the original design of the front suspension caster angle can not meet the design requirements. Establish a three - dimensional vehicle dynamics model to simulate the no-load and full load under the straight-line acceleration and emergency braking conditions the vehicle 's movement , the original front suspension braking anti- nod and accelerate the anti - lift less effective . By a large number of simulation tests , the best improvement . Suspension optimization based on simulation analysis of the no-load and full load steady steering of the vehicle handling and stability characteristics and steering wheel transient response characteristics , improved suspension design vehicles with a certain lack of steering characteristics . The simulation results show that the fluctuations in the angular velocity and lateral acceleration is increasing with the speed to improve vehicle yaw enter steady state experienced growth , fully loaded car -load maximum yaw rate and lateral acceleration than to large , transient response time is relatively long . Papers on the simulation and analysis of the results of the double- wishbone independent suspension , quick and correct decision-making to provide a reliable reference for the factory suspension program with the reality of actual significance .

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CLC: > Transportation > Road transport > Automotive Engineering > Automotive structural components > Travel System > Suspension
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