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首页> 外文期刊>Composite Structures >Buckling analysis of tri-axial woven fabric composite structures. Part Ⅰ: Non-linear finite element formulation
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Buckling analysis of tri-axial woven fabric composite structures. Part Ⅰ: Non-linear finite element formulation

机译：三轴机织物复合结构的屈曲分析。第一部分：非线性有限元公式

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摘要

This paper deals with the stability analysis of curved woven tri-axial composite tow structures. A non-linear finite element analysis is presented. Based on the continuum mechanics principles, the finite element updated Langrangian incremental formulation for non-linear analysis is derived. Example problems are solved and comparison of the present results with the results available in existing reference has been made. The effectiveness of the formulation and the validity of the corresponding computer code are demonstrated. The buckling analysis of tri-axial composite straight beam and curved beam that is a part of woven fabric tri-axial composite tow structures subjected to different boundary conditions is performed. In order to further confirm the accuracy of the numerical solutions, approximate analytical solutions corresponding to the different structures have been derived. The numerical results obtained are in very good agreement with the analytical solutions for the straight beam, curved beam and curved beam structures. The effect of the resin on the curved woven tri-axial composite tow structures is also investigated.
机译：本文研究了弯曲编织三轴复合材料丝束结构的稳定性。提出了非线性有限元分析。基于连续力学原理，推导了用于非线性分析的有限元更新朗格朗日增量公式。解决了示例问题，并已将本结果与现有参考文献中提供的结果进行了比较。证明了配方的有效性和相应计算机代码的有效性。进行三轴复合直梁和曲梁的屈曲分析，弯曲三轴是机织物三轴复合丝束结构在不同边界条件下的一部分。为了进一步确定数值解的准确性，已经推导了对应于不同结构的近似解析解。所得数值结果与直梁，弯曲梁和弯曲梁结构的解析解非常吻合。还研究了树脂对弯曲编织三轴复合丝束结构的影响。

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