Out-of-plane ply wrinkling defects during consolidation over an external radius
Out-of-plane ply wrinkling defects during consolidation over an external radius
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DOI：
10.1016/j.compscitech.2014.10.007
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发表时间：
2014-12-10
影响因子：
9.1
通讯作者：
Hunt, G. W.
中科院分区：
文献类型：
--
作者：
Dodwell, T. J.;Butler, R.;Hunt, G. W.
如果防止碳纤维层在它们固结到非平凡几何形状上时彼此滑动，则它们可能特别容易受到扭曲/屈曲不稳定性的影响。本文提出了一个考虑铺层外半径固结时平面外铺层滑移的一维模型。皱纹出现的临界条件提供了消除此类缺陷的制造策略。预测的皱波波长和临界皱波条件与在翼梁演示器中观察到的皱波缺陷具有良好的一致性。(C)2014爱思唯尔有限公司版权所有。
If carbon fibre layers are prevented from slipping over one another as they consolidate onto a non-trivial geometry, they can be particularly susceptible to wrinkling/buckling instabilities. A one dimensional model for out-of-plane ply wrinkling during consolidation over an external radius is presented. Critical conditions for the appearance of wrinkles provide manufacturing strategies to eliminate such defects. Predicted wrinkle wavelengths and critical wrinkling conditions show good agreement with wrinkle defects observed in a spar demonstrator. (C) 2014 Elsevier Ltd. All rights reserved.