汽车副仪表板静动态性能分析与优化设计

Static and Dynamic Performance Analysis and Optimal Design of a Automotive Console

为了评估某汽车副仪表板的静动态性能,首先采用有限元方法建立副仪表板网格模型,然后对其进行自由模态分析,其低阶固有频率高于发动机激振频率。再对其进行刚度性能和强度性能分析,其各个工况下的变形都小于目标值,同时其应力值都小于材料屈服值。再对其进行抗凹性能分析,各个薄弱点的变形低于要求值,其静动态性能均符合设计要求。最后基于集成平台对副仪表板的厚度进行优化设计,得到了最优的结构参数,优化之后其综合性能达标,并且其质量减轻了9.5%。

Aiming at evaluating the static and dynamic performance of an automotive console,firstly,the console grid model was established based on finite element method,and then the free modal analysis was performed.The results show that its low-order natural frequency is higher than the engine excitation frequency.Secondly,the stiffness performance and strength performance of the console is analyzed.The analysis results show that its deformation in each working condition is less than the target value,and its stress are less than the material yield value.Thirdly,the dent resistance performance of the console is analyzed.The analysis results show that its deformation of each weak point are lower than the required value,its static and dynamic performance could meet design requirements.Lastly,the console thickness is optimal designed basd on integrated platform,the the optimal structural parameters are obtained,its comprehensive performance could meet design requirements after optimization,and its weight is reduced by 9.5%.