材料科学
残余应力
复合数
复合材料
工作(物理)
非线性系统
热塑性塑料
本构方程
曲率
压力(语言学)
结晶
机械
结构工程
有限元法
机械工程
热力学
数学
工程类
几何学
物理
哲学
量子力学
语言学
作者
Mael Péron,Frédéric Jacquemin,Pascal Casari,G. Orange,Jean‐Luc Bailleul,Nicolas Boyard
出处
期刊:Nucleation and Atmospheric Aerosols
日期:2017-01-01
被引量:4
摘要
The prediction of process induced stresses during the cooling of thermoplastic composites still represents a challenge for the scientific community. However, a precise determination of these stresses is necessary in order to optimize the process conditions and thus lower the stresses effects on the final part health. A model is presented here, that permits the estimation of residual stresses during cooling. It relies on the nonlinear laminate theory, which has been adapted to arbitrary layup sequences. The developed model takes into account the heat transfers through the thickness of the laminate, together with the crystallization kinetics. The development of the composite mechanical properties during cooling is addressed by an incremental linear elastic constitutive law, which also considers thermal and crystallization strains. In order to feed the aforementioned model, a glass fiber and PA6.6 matrix unidirectional (UD) composite has been characterized. This work finally focuses on the identification of ...
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