基于Box-Behnken法的曲柄结构优化设计

OPTIMAL DESIGN OF CRANK BASED ON BOX-BEHNKEN METHOD

运用Solid Works参数化建立曲柄结构的三维模型,并用Simulation进行有限元仿真分析。确定6个待优化参数,以最大应力为约束,求解最小的结构重量。采用Box-Behnken法进行优化,迭代分析49次,考虑Solid Works不能充分拟合数据,用试验设计软件Design-Expert建立Box-Behnken响应面设计,将仿真结果输入Design-Expert,分别拟合关于体积和应力的响应面函数,求得最优解。对比参考文献的结论,表明BBD在结构优化问题上有很好的应用价值。

Parametrically building the crank 3D model by SolidWorks and doing the FEA by Simulation. Select six parameters and take maximum stress as constraints to solve minimum volume of the structure. Using BBD to optimize the structure and finish 49 iterations. SolidWorks can＇ t fully fit the data. Design the BBD by DOE software Design-Expert and input the simulation data. Then it fits the response surface functions about volume and stress and gets the optimal solution. Comparing with the conclusion of the reference, BBD shows application values on structural optimization.