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

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