THE NONLINEAR VISCOELASTIC-VISCOPLASTIC BEHAVIOR OF IM7/5260 COMPOSITES SUBJECTED TO CYCLIC LOADING

被引：37
|
作者：
TUTTLE, ME
PASRICHA, A
EMERY, AF
机构：
[1] Department of Mechanical Engineering, University of Washington, Seattle
来源：
JOURNAL OF COMPOSITE MATERIALS | 1995年 / 29卷 / 15期
关键词：
VISCOELASTICITY; VISCOPLASTICITY; CYCLIC LOADING; DURABILITY;
D O I：
10.1177/002199839502901505
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
A constitutive model consisting of a combination of the Schapery nonlinear viscoelastic heredity integral and a nonlinear viscoplastic functional employed by Zapas and Crissman is described. Material constants associated with the constitutive models are measured for graphite-bismaleimide (IM7/5260) composites at elevated temperatures and stress levels. These results are then combined with classical lamination theory, so as to predict the response of a multi-angle laminate to cyclic thermomechanical loadings. Predictions are favorably compared with measurements obtained during a 50-hr test involving ten 5-hr loading cycles.
引用
收藏
页码：2025 / 2046
页数：22
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