摘要
根据项目组的要求,对某轻型载货车车架进行轻量化验证分析。文章基于有限元法,运用Hypermesh、Nastran等有限元计算分析软件,建立车架有限元模型,对车架进行模态及扭转模量分析,在垂向弯曲工况、紧急转弯工况、过坑扭转工况、紧急制动工况四种恶劣工况模式下对车架进行强度校核分析,通过对优化前后分案的分析对比,优化后方案的模态、扭转模量与优化前相当,强度方面优于优化前方案。分析结果表明,新方案模型可以替代原方案模型,轻量化设计成功减重27Kg,约为优化前质量的9.7%。
According to the requirements of the project team, the lightweight analysis of a light truck frame is carried out. Based on the finite element method, the finite element model of the frame is established by using the finite element calculation and analysis software Hypermesh and Nastran. The modal and torsional modulus of the frame are analyzed. The strength of the frame is checked under the vertical bending condition, the emergency turning condition, the pit-crossing torsion condition and the emergency braking condition. The analysis shows that the mode and torsion modulus of the optimized scheme are comparable to those of the pre-optimized scheme, and the strength of the optimized scheme is better than that of the pre-optimized scheme. The analysis results show that the new scheme model can replace the original scheme model. The weight loss of the lightweight design is 27 Kg, which is about 9.7% of the pre-optimization quality.
作者
钱玉兰
Qian Yulan(Weichai POWER CO.,LTD,Shanghai R&D Center,Shanghai 201114)
出处
《汽车实用技术》
2020年第1期77-79,共3页
Automobile Applied Technology
