Stiffeners layout design of thin-walled structures with constraints on multi-fastener joint loads

作     者：Jie HOU Jihong ZHU Fei HE Weihong ZHANG Wenjie GUO 

作者机构：Engineering Simulation & Aerospace Computing The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology Northwestern Polytechnieal University Xi'an 710072 China 

基　　金：supported by National Natural Science Foundation of China (Nos. 11432011, 11620101002) National key research and development program of China (No. 2017YFB1102800) Key Research and Development Program of Shaanxi, China (No. S2017-ZDYF-ZDXM-GY-0035) 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2017年第30卷第4期

页      码：1441-1450页

摘      要：The purpose of this paper is to present an extended topology optimization method for the stiffeners layout design of aircraft assembled structures. Multi-fastener joint loads and manufacturing constraints are considered simultaneously. On one hand, the joint loads are calculated and constrained within a limited value to avoid the failure of fasteners. On the other hand, the manufacturing constraints of the material distribution in the machining directions of stiffeners are implemented by an improved piecewise interpolation based on a beveled cut-surface. It is proven that the objective function is strictly continuous and differentiable with respect to the piecewise interpolation. The effects of the extended method with two different constraints are highlighted by typical numerical examples. Compared with the standard topology optimization, the final designs have clearly shown the layout of stiffeners and the joint loads have been perfectly constrained to a satisfying level.

主 题 词：Joint load constraint Manufacturing constraint Stiffeners Thin walled structures Topology optimization 

学科分类：08[工学] 0825[工学-环境科学与工程类] 

核心收录：

D　O　I：10.1016/j.cja.2017.05.005

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