An aerospace bracket designed by thermo-elastic topology optimization and manufactured by additive manufacturing  

作　　者：Guanghui SHI Chengqi GUAN Dongliang QUAN Dongtao WU Lei TANG Tong GAO 

机构地区：[1]Beijing Aerospace Technology Institute,Beijing 100074,China [2]State IJR Center of Aerospace Design and Additive Manufacturing,Northwestern Polytechnical University,Xi'an 710072,China [3]Institute of Intelligence Material and Structure,Unmanned System Technologies,Northwestern Polytechnical University,Xi'an 710072,China

出　　处：《Chinese Journal of Aeronautics》2020年第4期1252-1259,共8页中国航空学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(Nos.2017YFB1102800,2016YFB0201600);the National Natural Science Foundation of China(Nos.11672239,51735005)。

摘　　要：Combination of topology optimization and additive manufacturing technologies provides an effective approach for the development of light-weight and high-performance structures.A heavy-loaded aerospace bracket is designed by topology optimization and manufactured by additive manufacturing technology in this work.Considering both mechanical forces and temperature loads,a formulation of thermo-elastic topology optimization is firstly proposed and the sensitivity analysis is derived in detail.Then the procedure of numerical optimization design is presented and the final design is additively manufactured using Selective Laser Melting(SLM).The mass of the aerospace bracket is reduced by over 18%,benefiting from topology and size optimization,and the three constraints are satisfied as well in the final design.This work indicates that the integration of thermo-elastic topology optimization and additive manufacturing technologies can be a rather powerful tool kit for the design of structures under thermal-mechanical loading.

关 键 词：Additive manufacturing Aerospace bracket Selective laser melting(SLM) Thermo-elastic Topology optimization 

分 类 号：V260.5[航空宇航科学与技术—航空宇航制造工程]