期刊
COMPOSITE STRUCTURES
卷 209, 期 -, 页码 434-442出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2018.09.095
关键词
Bending-twisting coupled structures; Composite laminates; Extension-shear coupling effect; Hygro-thermal stability; Yield strength
资金
- National Natural Science Foundation of China [11472003]
To improve the mechanical properties of bending-twisting coupled structures, the necessary and sufficient conditions for composite laminates with extension-shear coupling effect which contribute to the bending-twisting coupled structures are deduced. Then the analytical expressions for torsional distortion of bending-twisting coupled structures are deduced. The Differential Evolution algorithm is used to optimize the bending-twisting coupled structures for the purpose of maximizing torsional distortion, the stacking sequences of two extension-shear coupled laminates are obtained through calculation. Lastly, the applicability of simplified model is verified. The hygro-thermal stability, bending-twisting coupling effect and buckling load of bending-twisting coupled structures are verified via simulation. The yield strength is analyzed based on Tsai-Wu criterion.
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