重型卡车驾驶室焊点的拓扑优化分析

Analysis of topological optimization on optimal heavy truck cab's spot-weld layout

以某重型卡车驾驶室为例,在有限元模型基础上建立焊点空间模型进行扭转刚度分析,并采用离散变量拓扑优化方法对焊点的数量及空间布局进行优化,通过优化前后的对比可知,优化后在不降低扭转刚度的同时减少了焊点数目。研究表明此方法在车身焊点优化上效果明显,具有重要的应用价值。

Taking a heavy truck cab as the example,a model of the spot-weld space based on finite element was built to analyse the torsional stiffness of the model,and the amount and layout of the spot-weld using the discrete variable topology optimization were optimized.Comparing with the original model in welding spot's number and the torsional stiffness,the optimized model has less number of welding spot,but the torsional stiffness of the two model is almost the same.So the method of topology optimization has guiding significance and great value on the spot-weld layout.