减震器座开裂原因分析及优化设计

Research of Cause Analysis and Optimized Design on Shock Absorber Bearing

对三款车型的减震器座开裂问题进行了分析说明,并将其作为A、B、C三类问题,通过CAE分析其各种工况下的应力应变情况,详细地说明其各自的开裂破坏原因及应该改进的方向。然后,通过减震器座的材料选用、板材厚度选择及结构设计三方面,结合CAE分析结果,证明了这三方面因素均对减震器座开裂的问题有重要的影响。同时,针对这三方面原因,进行减震器座开裂问题的进一步优化设计分析。结果表明:采用高强度钢板、增加板材厚度,增加加强筋,避免应力集中区域均可以提高减震器座的抗开裂能力。

The cracking problem of shock absorber bearing on three models is analyzed and explained in this paper. It is divided into three problems as A, B, C to particularly explain each crack cause and the direction to improve by analyzing stress-strain under each working condition with CAE. Then, it is proved that materials selection, sheet metal thickness and structure design have significant impact on the cracking of shock absorber bearing with CAE analysis results. Meanwhile, the shock absorber bearing is optimized for further in terms of three causes. The results show that anti-cracking ability of shock absorber bearing can be substantially improved by using high-strength sheet steel, increasing sheet thickness and reinforcing ribs, as well as avoiding the stress concentration area.