Effect of step spacing on delamination of tapered laminates
Effect of step spacing on delamination of tapered laminates
复制标题
台阶间距对锥形层压板分层的影响
DOI：
10.1016/0266-3538(94)90006-x
复制
发表时间：
1994
影响因子：
9.1
通讯作者：
Michael John Jones
中科院分区：
文献类型：
--
作者：
W. Cui;M. Wisnom;Michael John Jones
锥形层压板常因分层而失效。许多研究者已经建立了预测锥形层压板强度的数学模型。然而，这一问题的一个重要方面没有得到充分注意，那就是相邻步骤之间距离的影响。对单向玻璃纤维/环氧树脂材料的这一问题进行了理论和实验研究。结果表明，当台阶间距较小时，台阶间距对分层应力有显著影响。但是，当间距大于某一值时，影响可以忽略不计。给出了一个估算该距离的简单公式，并与实验结果相吻合。
Tapered laminates often fail by delamination. Studies have been made by many investigators to establish mathematical models for predicting the strength of tapered laminates. However, one area of importance in this problem that has not received adequate attention is the effect of the distance between neighbouring steps. This problem is studied both experimentally and theoretically for unidirectional glass-fibre/epoxy material. It is shown that when the step spacing is small, the step spacing has a significant effect on the delamination stress. However, when the spacing is greater than a certain value, the effect is negligible. A simple formula for estimating this distance is given and shown to be consistent with experimental results.