Higher-Order Zig-Zag Theory for Laminated Composites With Multiple Delaminations
Higher-Order Zig-Zag Theory for Laminated Composites With Multiple Delaminations
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DOI：
10.1115/1.1406959
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发表时间：
2001-11
期刊：
影响因子：
--
通讯作者：
M. Cho;Jun-Sik Kim
中科院分区：
文献类型：
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作者：
M. Cho;Jun-Sik Kim
本文发展了含多个脱层复合材料层合板的高阶之字形理论。通过施加上下表面无横向剪应力条件和含脱层界面的横向剪应力连续条件，得到了最小自由度的位移场。该位移场可以系统地处理分层的数量、形状、尺寸和位置。通过变分法的动力学形式，得到了动力学平衡方程和变分相容边界条件。脱层梁有限元实现的新发展的理论的性能进行评估。线性屈曲和固有频率分析验证了本文理论的准确性和有效性。本文提出的高阶之字形理论可作为分析含多个脱层复合材料板静动力特性的有效工具。
A higher-order zig-zag theory has been developed for laminated composite plates with multiple delaminations. By imposing top and bottom surface transverse shear stress-free conditions and interface continuity conditions of transverse shear stresses including delaminated interfaces, the displacement field with minimal degree-of-freedoms are obtained. This displacement field can systematically handle the number, shape, size, and locations of delaminations. Through the dynamic version of variational approach, the dynamic equilibrium equations and variationally consistent boundary conditions are obtained. The delaminated beam finite element is implemented to evaluate the performance of the newly developed theory. Linear buckling and natural frequency analysis demonstrate the accuracy and efficiency of the present theory. The present higher-order zig-zag theory should work as an efficient tool to analyze the static and dynamic behavior of the composite plates with multiple delaminations.