本文采用Pipes-Pagano 模型,用准三维有限元法分析贵穿分层而引起的刚度下降,得到了刚度下降率随分层长度的增长曲线规律分三个阶段,主要是中间段的线性部,与O′Brien 结果相吻合。
In this paper,based on Pipes-Pagano problem,Quasi-3D element methodis employed to study the stiffness-reduction in composite laminates dueto through delaminations between the composite layers.From the analysis,the development of damage can be divided into
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