紧凑型电子设备支撑壳体的复杂设计域计算

Calculation of the Complex Design Domain of the Support Shell for Compact Elec⁃tronic Equipment

支撑结构是紧凑型电子设备保证机械可靠性的重要组成部件,拓扑优化等优化技术为其提供设计方法。针对支撑结构设计中由于支撑壳体不规则的设计特征及内部元器件的堆叠而存在的复杂设计域进而影响结构设计的效率和性能问题,提出一种紧凑型电子设备支撑壳体的复杂设计域的计算方法。首先,给出紧凑型电子设备设计域的定义,接着提出壳体包络曲面及堆叠组件外接空间的概念;之后,对支撑壳体上众多的设计特征进行分类并填充,获取壳体零件的包络曲面;然后,利用体素化理论来计算复杂堆叠组件的外接空间;将参与设计问题定义的壳体、堆叠组件等装配器件作为空间约束条件间接得到设计域;最后利用衍生式设计在该设计域内进行结构设计,验证该方法的可行性。

Topology optimization provides a design method for compact electronic equipment support structures.In the design of the support structure of compact electronic equipment,the irregular design features of the support shell and the stacking of the components lead to the complex design space,which affects the efficiency and performance of the structure design.To address these defects,an calculating the design domain of the support shell based on compact electronic equipment was proposed.Firstly,the design domain of compact electronic equipment,shell envelope surface and outer space of stacked components were defined.Secondly,the envelope surface of shell parts was extracted,and the outer space of complex stacked components was calculated by using the voxelization theory.Finally,based on generative design,the structure design was applied in the space to verify the feasibility and effectiveness of the method.