METHOD FOR DESIGNING AND OPTIMIZING THREE-DIMENSIONAL POROUS HEAT DISSIPATION STRUCTURE ON BASIS OF THREE-CYCLE MINIMAL CURVED SURFACE

摘要

A method for designing and optimizing a three-dimensional porous heat dissipation structure on the basis of a three-cycle minimal curved surface, which belongs to the field of computer-aided design. The method comprises: first, establishing a porous structure by using an implicit function representation of a three-cycle minimal curved surface; second, according to a steady-state heat conduction equation, transforming a heat dissipation problem into a problem of minimizing heat dissipation weakness under given constraints; then, using a global-local interpolation method to directly solve a parametric function; finally, performing cycle optimization and wall thickness optimization on the modeling problem, and obtaining an optimized porous sheath structure after smooth cycle and wall thickness variation optimization. The porous structure in the present invention greatly improves the heat dissipation performance, as well as the efficiency and effectiveness of heat conduction. The porous structure designed by the present invention has characteristics such as smoothness, full connectivity, controllability, and quasi-self-support, which ensure the applicability and manufacturability of said type of structure. The porous structure is applicable in 3D printing manufacturing methods. The internal structure in a printing process does not require additional support, saving printing time and printing materials.