基于参数化建模的悬臂结构优化设计

Optimization Design of a Cantilever Structure Based on Parametric Modeling

参数化设计方法中初始参数通常是凭借设计经验或参考以往的设计,之后对模型进行仿真分析,确定其是否满足设计要求。针对方法中存在的主观性和设计效率问题,给出一种快速获取最优建模参数的方法。首先将机械结构的参数化尺寸定义为变量,根据结构的设计要求建立目标函数。然后利用MATLAB求解目标函数的最优解,该最优解就是参数化尺寸的最优值,从而实现机械结构的优化设计。文中通过一设计实例,介绍了该方法的设计思路与设计过程,验证了其可行性和有效性。

The initial parameters of parametric modeling method are usually determined by means of experienceor by reference to previous designs, and then the model is simulated and analyzed to determine whether it meetsthe design requirements. Due to the problems of subjectivity and efficiency in the method, this paper presents amethod to quickly obtain optimal modeling parameters. The parameterized dimensions of the mechanicalstructure are firstly defined as variables, an objective function is established according to design requirements.And then the optimal solution of the objective function is solved by MATLAB, which is the optimal value of theparameterized dimensions, and thus to realize the optimal design of mechanical structure. Combined with andesign example, the paper introduces the design idea and design process of the method, and verifies its feasibilityand effectiveness.