Research on lightweight optimization of the white vehicle body
The structural analysis and optimization of the white vehicle body can reduce the weight of the body and improve the economy of the whole vehicle while maintaining the strength and safety performance.Based on ANSA software,lightweight design and optimization for an SUV body in white are carried out.Firstly,the geomet-ric model of the white body is established,and the material properties are obtained.ANSA is used for structural analysis to evaluate the bending stiffness and torsional stiffness of the body structure.Then,through the single objective optimization method,considering the constraints of minimum mass,stress constraint and modal fre-quency constraint,the vehicle body is optimized to achieve the lightweight goal.The results show that the body weight is reduced by 28 kg after optimization,and the weight reduction ratio reaches 3.7%.Under the design standard and modal constraint conditions,the bending stiffness and torsional rigidity of the vehicle body decrease by 2.5%and 6.8%,respectively.Also,the body still maintains sufficient strength and safety performance.
NETL
NSTL
万方数据
