自适应参数驱动的装配界面形状主动设计方法

The uniformity of the stress distribution is an important indicator of the assembly accuracy and assembly performance stability of precision electromechanical products, and uniform stress distribution is one of the goals pursued in the current assembly process of precision electromechanical products. Shape design is an important way to improve the contact stress distribution at the assembly interface. In view of the problems that the initial parameters are difficult to determine in the current stress distribution-based active design method of the interface shape, and that the relevant parameters have a large impact on the calculation efficiency and numerical stability of the optimization process, an adaptive parameter calculation method is proposed to adjust the optimization parameters based on the information of the uniformity of contact stress distribution during the optimization process. Then, a typical single bolted joint structure is used as the design object to carry out the interface shape design, and the results of the adaptive parameter design method and the fixed parameter design method are compared and analyzed after the active design of the assembly interface shape respectively. Results show that the problem of determining the initial parameters in the stress distribution-based active design method of interface shape can be well solved, and the improvement of the optimization effect, the calculation efficiency and the numerical calculation stability of the optimization process can be achieved simultaneously.