某车型空调管路支架断裂失效分析及优化

Break Inefficient Analysis and Optimization for the Bracket of Air Conditioner Pipeline of One Vehicle

利用有限元软件建立某车型空调管路支架的惯性力强度分析模型、模态分析模型和动力总成拉拽力强度分析模型,利用仿真分析软件进行有限元计算,通过与试验数据和试验照片对比分析,判断支架失效真因。根据失效真因,结合支架受力传递路径,提出结构优化方案,并对优化方案进行分析验证。分析结果表明:在同样的动力总成拉拽力作用下,优化方案最大应力值相比原结构降低了50%,且后续整车试验并未出现空调管路支架失效问题。此优化方案可以解决空调管路支架失效问题。

The inertia intensity analysis model, mode analysis model and powertrain pulling force analysis model of the braeke! of an air conditioner pipeline were built using simulation software. The finite element analysis results were compared with the experiment data. The cause of break inefficient was the force of engine dragging bracket of the air conditioner pipeline. According to the cause and the path of the force, the optimization project was proposed and validated. The analysis result indicates that the stress of the optimized structure reduces 50% than that of the original strurture. In the later test, the break inefficient problem did not appear. Therefore, the optimized project can solve inefficient problem,