基于碰撞相容性的电动汽车车身拓扑优化研究

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1、第三章乘坐区间多目标拓扑优化研究3.1拓扑优化数学模型建立..............................................273.1.1基于SIMP插值的拓扑优化方法.................................273.1.2多工况下柔度目标数学模型建立................................283.1.3NVH工况下模态频率目标函数..................................293.1.4综合目标函数模型....

2、........................................303.1.5优化设计模型................................................313.1.6乘坐区拓扑优化流程..........................................323.2拓扑优化迭代试算.................................................323.3优化初始模型确定.......................

3、..........................333.3.1初始几何模型确定............................................333.3.2有限元模型确定..............................................363.4耐撞性和NVH工况加载.............................................373.4.1车身所受静载荷.....................................

4、.........373.4.2碰撞载荷加载................................................383.4.3NVH工况及载荷..............................................393.4.4拓扑优化迭代计算............................................413.4.5优化模型确认................................................423.4.

5、6构型提取....................................................433.5拓扑优化结果分析.................................................443.5.1车身耐撞性分析..............................................443.5.2NVH性能分析验证............................................453.6本章小结.........

6、................................................46第四章乘坐区间尺寸最优化设计4.1正交试验设计概述.................................................474.1.1极差分析法..................................................484.1.2方差分析法..................................................484.2乘坐区尺

7、寸优化设计...............................................514.2.1试验指标确定................................................514.2.2单因素分析..................................................514.2.3因素与水平确定..............................................524.2.4试验设计及结果分析......

8、....................................554.3最优结构验证分析.................................................604.3.1仿真结果可信度..............................................614.3.2一阶扭转验证..............................