On the behaviour of the residual strain produced by matrix cracking in cross-ply laminates
On the behaviour of the residual strain produced by matrix cracking in cross-ply laminates
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正交层合板中基体开裂产生的残余应变行为
DOI：
10.1016/s1359-835x(98)00037-2
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发表时间：
1998
影响因子：
8.7
通讯作者：
S. Ogin
中科院分区：
文献类型：
--
作者：
F. Bassam;L. Boniface;K. Jones;S. Ogin
具有一系列层厚度的透明交叉层压板被单调加载以产生（1）一系列裂纹密度；或（2）单个裂纹。已经测量了由于损坏而产生的残余应变。结果发现，残余应变与基于剪力滞分析或变分力学的模型的预测相当一致。根据面外剪切模量 G23 可能的非线性和时间相关行为，讨论了残余应变随着时间的推移而小幅但显着地降低到稳态值的情况。
Transparent cross-ply laminates with a range of ply thicknesses have been loaded monotonically to produce either (1) a range of crack densities; or (2) a single crack. The residual strains produced as a consequence of the damage have been measured. It is found that the residual strains are in reasonable agreement with the predictions of models based on shear-lag analyses or variational mechanics. A small, but significant, reduction in the residual strain with time to a steady-state value is discussed in terms of the possible non-linear and time-dependent behaviour of the out-of-plane shear modulus, G23.