Anti-symmetric laminates for improved consolidation and reduced warp of tapered C-sections
Anti-symmetric laminates for improved consolidation and reduced warp of tapered C-sections
复制标题
反对称层压板可改善锥形剖腹产的固结并减少翘曲
DOI：
10.1179/2055035914y.0000000010
复制
发表时间：
2015
期刊：
影响因子：
--
通讯作者：
T. Dodwell
中科院分区：
文献类型：
--
作者：
Timothy Fletcher;Richard Butler;T. Dodwell
摘要本文对传统的对称铺层方法提出了挑战，提出了完全解耦的反对称层合板，它可以同时改善锥形层合板的固结和减小翘曲。为了消除面内和面外变形之间的耦合，设计了一个反对称铺层的C形截面层合板。结果与传统的，对称的基线进行比较。使用自动化纤维放置将两个层压件设计沉积在凸形工具上，并且在单个高压釜操作中进行最终的去堆积和固化。据推测，长的连续层跨越锥形区域可以抑制单向材料的固结时，他们是不等距的工具表面。反对称层压板的铺层终止策略减轻了这种影响。已经发现，反对称演示器实现了更好的巩固与基线对称演示器相比。结果还首次表明，反对称层压板所表现出的翘曲水平比对称基线低约50%。
Abstract This paper challenges the conventional use of symmetric stacking sequences by proposing fully uncoupled anti-symmetric laminates that simultaneously improve consolidation and reduce warp of tapered laminates. A demonstrator C-section laminate with an anti-symmetric stacking sequence has been designed to eliminate coupling between in-plane and out-of-plane deformation. Results are compared with a conventional, symmetric baseline. The two laminate designs were deposited on a male tool using automated fiber placement and final de-bulk and cure were performed in a single autoclave operation. It is postulated that long continuous plies spanning a tapered region can inhibit consolidation in unidirectional material when they are not equidistant from the tool surface. The ply termination strategy of the anti-symmetric laminate mitigates this effect. It has been found that the anti-symmetric demonstrator achieved better consolidation compared with the baseline symmetric demonstrator. The results also show for the first time, that the level of warping exhibited by the anti-symmetric laminate is approximately 50% lower than the symmetric baseline.
全正交各向异性层压板在压缩过程中的损伤容限
影响因子：
9.1
作者：
Baker N
通讯作者：
Baker N