The Effects of Matrix Plasticity on the Thermal Deformation of Continuous Fiber Graphite/Metal Composites
The Effects of Matrix Plasticity on the Thermal Deformation of Continuous Fiber Graphite/Metal Composites
复制标题
基体塑性对连续纤维石墨/金属复合材料热变形的影响
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
B. Min
中科院分区：
文献类型：
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作者：
M. H. Kural;B. Min
研究了极低膨胀单向角铺层金属基复合材料的热变形行为.理论研究考虑了基体材料中残余热应力和热循环环境引起的塑性流动。结果表明，热变形行为的显着变化，根据基体材料的应力状态。基体材料中的塑性导致大的热应变和滞后回线，这是弹性分析所不能预测的。然而，通过增加基体材料的屈服应力和使复合材料与操作温度一致来预处理，可以使塑性的影响最小化。本文还包括试验数据证实的弹塑性效应的基体材料的预测分析。
The thermal deformation behavior of very low expansion, unidirectional and angle- ply metal matrix composites is investigated. The theoretical investigation accounted for the plastic flow in the matrix material resulting from residual thermal stresses and ex posure to thermal cyclic environment. Results indicate that the thermal deformation behavior varies significantly in accordance with the stress state of the matrix material. Plasticity in the matrix material causes large thermal strains and hysteresis loops that are not predicted by the elastic analysis. The effects of plasticity can be minimized, however, by increasing the yield stress of the matrix material and preconditioning the composite consistent with the operating temperatures. This paper also includes test data substantiating the elastoplastic effects of matrix material as predicted by analysis.