Environmental effects on thermally induced multistability in unsymmetric composite laminates
Environmental effects on thermally induced multistability in unsymmetric composite laminates
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DOI：
10.1016/j.compositesa.2009.05.018
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发表时间：
2009-08
影响因子：
8.7
通讯作者：
J. Etches;K. Potter;P. Weaver;I. Bond
中科院分区：
文献类型：
--
作者：
J. Etches;K. Potter;P. Weaver;I. Bond
在碳纤维环氧树脂层压板中产生热致多稳态的原理在已发表的文献中引起了很大的兴趣。这项工作研究了水分吸收对这些板的机械性能的影响，重点关注几何形状和“快速通过”负载。从干燥状态监测样品，直至达到水分平衡。据观察，随着水分含量的增加，几何形状和快速通过性能发生了实质性变化。作为这项工作的一部分，一阶应变能分析进行了修改，纳入湿热应变项，使预测的层压板形状，由于水分含量。
The principles involved in the generation of thermal induced multistability in carbon fibre epoxy laminates have received much interest in the published literature. This work examines the effects of moisture absorption on the mechanical properties of these plates focussing on geometry and ‘snap-through’ loadings. Samples were monitored from a dry state until moisture equilibrium was achieved. It was observed that substantial changes in geometry and snap-through performance occurred as moisture content increased. As part of this work, a first order strain energy analysis was modified to incorporate a hygrothermal strain term to enable prediction of the laminate shape due to moisture content.