基于Optistruct软件的翼子板刚度、模态的分析及优化

Structure,mode and optimization of the Optistruct-based software for car fenders

运用有限元分析法,基于Optistruct软件对某车型前翼子板刚度及其模态进行分析.翼子板有限元模型建立要求为:模型导入、几何清理、网格划分、网格质量检查、载荷及工况加载.模型分析结果显示铝合金材料翼子板的刚度较大,耐冲击能力较强,安全系数较高,相比于复合材料翼子板优势明显.优化方案设计将质量以及静态位移作为响应,设置静态位移为约束点,最小限度为1mm;对于局部应力点加强约束或者加入加强筋板.

This study describes Optistruct-based analysis of the stiffness and finite element modes on auto fenders in relation to the import,geometrical cleaning,mesh clarification,quality control,working loads and conditions.Results show that stiffness of aluminum alloy material is more intense,impact resistance stronger,and safety index higher.That is superior to composite fenders.Moreover,optimization is done in designing with quality and static displacement as response,the static displacement as constraint within a minimum of 1 mm to join a local stress point to reach the goal of lightweight.Where there is zero of a local stress point,the lightweight design is possible.