基于响应面法的V带轮多目标优化设计

Multi-objective optimization design of V-pulley based on response surface method

在设计V带轮初始阶段引入结构轻量化思想,利用PTC Creo与ANSYS Workbench无缝连接技术建立V带轮的简化三维模型和有限元模型,对其进行静力强度分析和前6阶模态分析。首先运用拓扑优化方法对V带轮进行初步轻量化设计;然后根据拓扑结果对带轮结构优化并二次设计后,以V带轮质量、最大应力、最大变形以及前六阶固有频率为目标函数,对其进行多目标函数的响应面法优化;最终,在满足带轮强度、刚度的前提下,使V带轮质量减小了44.498%,并降低了带轮结构固有频率,避免共振。结果表明:运用响应面法联合拓扑优化方法对V带轮进行优化设计可行且有效,具有较强的工程实用性。

In the initial stage of the design of V-pulley, the idea of structural lightweight is introduced, by using PTC Creo and ANSYS Workbench seamless connection technology, a simplified three-dimensional model and finite element model of V-pulley are established, and static strength analysis and the first 6 order modal analysis are carried out. First of all, the V-pulley is preliminarily light-weight designed by using the topology optimization method. Then, according to the topology results, after optimizing the belt wheel structure and two times design, the V-pulley mass, the maximum stress, the maximum deformation and the first six natural frequencies areincluded in the objective function, and the multi-objective function is optimized by response surface method. Finally, on premise of meeting the strength and stiffness of the belt, the mass of V-pulley is reduced by 44.498%, and the natural frequency of the belt wheel structure is reduced and resonance is avoided. The results show that it is feasible and effective to optimize the design of V-pulley by using response surface method and topology optimization method, and the methods are of strong engineering practicability.