控制臂多目标拓扑优化研究

RESEARCH ON MULTI-OBJECTIVE TOPOLOGY OPTIMIZATION FOR CONTROL ARM

以控制臂为对象,研究了结构材料的多目标拓扑优化问题。应用加权特征值倒数法和折中规划法相结合的方法建立静动态多目标优化数学模型。在连续体结构变密度拓扑优化方法的基础上,建立了控制臂拓扑优化的有限元模型,确定子目标权重系数,进行了多目标拓扑优化。优化结果得到了材料的理想分布,提高了结构固有频率,减低了结构质量,实现多目标的同步优化。

Taking control arm as the object, the muhi-objective topology optimization problem was studied. The weighted eigenvalues reciprocal method, and compromise programming were combined to establish the static and dynamic multi-objective optimization model based on the Variable density structure of the continuum topology optimization method. A finite element model of the control arm topology optimization was established, and with the sub-goal weight coefficient, a multi-objective topology optimization was completed. An ideal distribution of the material was obtained. The natural frequency of the structure was improved, and the quality of the structure was reduced. The simultaneous optimization of multiple objectives gets a synchronization of the multi-objective optimization.