Design of Multi-Coupled Laminates with Extension-Twisting Coupling for Application in Adaptive Structures  

作　　者：Da Cui Daokui Li Shiming Zhou 

机构地区：[1]College of Aerospace Science and Engineering,National University of Defense Technology,Changsha,410073,China [2]Hunan Key Laboratory of Intelligent Planning and Simulation for AerospaceMissions,Changsha,410073,China

出　　处：《Computer Modeling in Engineering & Sciences》2022年第1期415-441,共27页工程与科学中的计算机建模（英文）

基　　金：the National Natural Science Foundation of China(Grant No.11472003);the Natural Science Foundation of Hunan Province of China(Grant No.2021JJ30770);the Postgraduate Scientific Research Innovation Project of Hunan Province(Grant No.CX20200007).

摘　　要：The multiple coupling of composite laminates has a unique advantage in improving the macro mechanical properties of composite structures.A total of three hygro-thermally stablemulti-coupled laminates with extensiontwisting coupling were presented,which were conducive to the formation of passive adaptive structures.Then,the multi-coupled laminates were used to design the bending-twisting coupled box structure,in which the configuration of laminate and box structure could be extended to variable cross-section configuration.The optimal design of stacking sequence was realized,the optimization objectives of which were to maximize bending-twisting coupling of box structure and extension-twisting coupling of laminate,respectively.The effects of multiple coupling on hygro-thermal stability,coupling,failure strength,buckling load,robustness and other comprehensive mechanical properties of laminates and box structures were analyzed by parametric modeling method.The results show that the extension-twisting coupling of laminate and the bending-twisting coupling of box structures can be greatly improved by 450%and 260%at maximum,respectively.Meanwhile,it would have a negative impact on the failure strength and buckling load,which,however,can be minimized by a reasonable paving method.Multicoupled laminates have good robustness,and the bending-twisting coupling helps improve robustness.Finally,the hygro-thermal stability and mechanical properties were verified by numerical simulation with finite element method.

关 键 词：Multi-coupled laminate passive adaptive structures optimal design mechanical properties numerical simulation 

分 类 号：O34[理学—固体力学]