重型汽车管状横梁、盆梁失效分析与改进

Failure Analysis and Improvement of Tubular Beam and Basin Beam of Heavy Truck

为解决某重型汽车管状横梁、盆梁总成失效率高及各个供应商故障率差异较大的问题,采用质量工具及系统分析方法,找出了影响重型汽车管状横梁、盆梁失效的关键影响因子,通过CAE分析方法对现有结构进行分析,并对改进方案进行了应力应变分析及验证,确定最优方案,提出从设计方面对该型重型汽车管状横梁、盆梁总成进行改进,并对售后表现进行跟踪,改进效果佳,售后故障率大幅下降。

In order to solve the problems of high failure rate of tubular beam and basin beam assembly of a heavy-duty truck and great difference of failure rate among different suppliers,the key influencing factors of tubular beam and basin beam of heavy-duty truck are found out by using quality tools and system analysis method.The existing structure is analyzed by CAE analysis method,and the stress-strain analysis and verification of the improvement scheme are carried out,and the best result is determined it is proposed to improve the tubular beam and basin beam assembly of the heavy truck from the design aspect,and track the after-sales performance.The improvement effect is good and the after-sales failure rate is greatly reduced.