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首页> 外文期刊>Journal of the Aeronautical Society of India >A ZIGZAG MODEL FOR LAMINATED COMPOSITE PLATES
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A ZIGZAG MODEL FOR LAMINATED COMPOSITE PLATES

机译：叠层复合板的ZIGZAG模型

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摘要

In the present work, a zig-zag model for symmetric laminated plate is developed. This model uses a sine term to represent the non-linear displacement field across the thickness as compared to a third order polynomial term in conventional theories. Transverse shear stress and strain are represented by a cosine term as compared to parabolic term. This model satisfies displacement and transverse shear stress continuity at the interface. Zero transverse shear stress boundary condition at the top and bottom of the plate are also satisfied. The numerical results indicates that the present model predicts very accurate results for displacement and stresses for symmetric cross-ply laminated plate, even for small length to thickness ratio. Results are presented for sandwich plates of different core elastic modulus. The results are also compared with an equivalent single layer theory.
机译：在目前的工作中，开发了一种用于对称层压板的之字形模型。与传统理论中的三阶多项式项相比，该模型使用正弦项来表示跨厚度的非线性位移场。横向剪切应力和应变用余弦项表示，而抛物线项表示。该模型满足界面处的位移和横向剪应力的连续性。板的顶部和底部的零横向剪切应力边界条件也得到满足。数值结果表明，该模型预测了对称交叉层压板的位移和应力非常精确的结果，即使长度与厚度之比很小。给出了不同芯部弹性模量的夹心板的结果。还将结果与等效的单层理论进行比较。

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