1. 大连理工大学工程力学系
2. 大连理工大学工业装备结构分析国家重点实验室
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张笑闻, 邢汉峥, 张靖坤, 等. 考虑界面相的低温复合材料结构多尺度分析[J]. 机械强度, 2021,43(6):1417-1421.
ZHANG XiaoWen, XING HanZheng, ZHANG JingKun, et al. MULTI-SCALE ANALYSIS OF CRYOGENIC COMPOSITE STRUCTURES CONSIDERING INTERFACIAL PHASE[J]. 2021,43(6):1417-1421.
张笑闻, 邢汉峥, 张靖坤, 等. 考虑界面相的低温复合材料结构多尺度分析[J]. 机械强度, 2021,43(6):1417-1421. DOI: 10.16579/j.issn.1001.9669.2021.06.020.
ZHANG XiaoWen, XING HanZheng, ZHANG JingKun, et al. MULTI-SCALE ANALYSIS OF CRYOGENIC COMPOSITE STRUCTURES CONSIDERING INTERFACIAL PHASE[J]. 2021,43(6):1417-1421. DOI: 10.16579/j.issn.1001.9669.2021.06.020.
纤维增强复合材料中纤维与树脂基体之间的过渡区域存在与二者性质不同的纤维/基体界面,如何合理地考虑界面相的介入是复合材料结构失效分析中的关键问题。基于纤维-基体-界面三相代表体元,发展了相应的微观失效准则、损伤退化模型和材料强度不确定性模型,建立了一种考虑界面相的多尺度有限元失效分析方法,实现了的热-机械载荷下的低温复合材料结构失效预测。并采用该方法对五种温度下三种典型复合材料层板进行失效分析,数值结果与试验结果相吻合,验证了该方法可以有效地对低温复合材料结构进行失效分析。
Fiber/matrix interfaces exist in the transitional region between fiber and resin matrix in fiber reinforced composites. How to reasonably consider the interposition of interfacial phase is a critical problem in the failure analysis of composite structures. In this paper, a multi-scale finite element method is proposed based on three-phase representative volume element, by developing the microscopic failure criterion, damage degradation model and uncertainty model of material strength. The failure prediction of low temperature composite structure under thermal mechanical load is realized by the multi-scale finite element method. Moreover, the method is used to analyze the failure of composite laminates at five temperatures. The numerical predictions are in good agreement with the experimental results, which shows that the method can analyze the failure of composite structures at cryogenic temperatures effectively.
复合材料界面多尺度分析方法代表体积元微观失效准则损伤退化模型
Composite interfaceMultiscale analysis methodRepresentative volume elementMicroscopic failure criterionDamage degradation model
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