Abstract
Facing the new situation of global energy restructuring, occupying the highland of future industry competition and environmental protection, the major developed countries in the world will develop the electric vehicle industry to the national strategic level, and thus the electric vehicle has become the focus of competition among transnational automobile enterprises.In addition to ensuring the power performance of the vehicle, electric vehicles should also satisfy the safety and comfort of passengers and ensure the integrity of cargo transportation. Therefore, it is necessary to study the ride comfort and handling stability of electric vehicles.In this paper, the whole vehicle model is established by ADAMS/Car software, and the ride comfort simulation analysis is carried out. ADAMS/Car software is used to build the models of front suspension subsystem, power assembly subsystem, body subsystem, rear suspension subsystem, tire subsystem and steering subsystem, and then the models of each subsystem are assembled into the whole vehicle rigid body model. The elastomer model of the control arm is generated by setting MNF file, and the rigid-flexible coupling model of the control arm is established by replacing the rigid model of the control arm with the elastomer model. The ride comfort of the rigid-flexible coupling model is simulated and analyzed. The total weighted magnitude is 116.2646. When the speed of the electric vehicle is 40 km/h, the passenger comfort is quite uncomfortable.
Highlights
In the course of driving, vehicle vibration is caused by rough road surface and the role of rotating parts such as engine
Road surface roughness is the basic input of vibration, so ride comfort mainly refers to vehicle vibration caused by road surface roughness
The results show that the vertical acceleration of the body and the dynamic load of the wheel are obviously affected by the change of the non-spring load mass, and both of them increase with the increase of the non-spring load mass
Summary
In the course of driving, vehicle vibration is caused by rough road surface and the role of rotating parts such as engine. XIAO Wen-wen used ADAMS to build the models needed to study electric vehicles driven by hub motors. With the increase of non-spring load quality, the ride comfort of electric vehicle driven by hub motor is studied. The increase of non-spring load quality leads to deterioration of vehicle driving performance [2]. YAO Mai taking a middle truck as the research object, he used Adams/Car to establish a multi-body dynamic model of vehicle ride comfort, and carried out ride comfort simulation analysis. The influence of main factors such as bushing stiffness, shock absorber damping and leaf spring stiffness on vehicle ride comfort is studied [3]
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