Lightweight 3D printing traction machine shell nesting cellular topology optimization technology

Aiming at the lightweight design of traction machine shell of a butterfly motor, the finite element simplified model of traction machine shell is established. The static analysis of traction machine shell is made with ANSYS Workbench. Based on the static stress cloud chart, topology optimization is carried out with taking the unit density as design variable and the lightest model weight as the optimization objective under the stiffness constraint. The model of traction machine shell is reconstructed with the back nested honeycomb structure. The lightweight design of traction machine shell of a butterfly motor shows that the proposed method can meet the mechanical properties and effectively reduce the weight of traction machine shell, providing a feasible solution for the lightweight design of complex structure for additive manufacturing.