Applicability of micro–macro decoupling scheme to two-scale analysis of fiber-reinforced plastics
Applicability of micro–macro decoupling scheme to two-scale analysis of fiber-reinforced plastics
复制标题
微观-宏观解耦方案在纤维增强塑料两尺度分析中的适用性
DOI：
10.1080/09243046.2014.915098
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发表时间：
2014
影响因子：
2.9
通讯作者：
Naohiro Miyanaga
中科院分区：
文献类型：
--
作者：
K. Terada;N. Hirayama;Koji Yamamoto;J. Kato;T. Kyoya;S. Matsubara;Yusuke Arakawa;Yuta Ueno;Naohiro Miyanaga
数值研究的目的是证明解耦多尺度分析方法对纤维增强塑料（FRP）力学行为微观-宏观评估的适用性，纤维增强塑料（FRP）表现出基体材料的非弹性变形和内部损伤。在演示过程中，证实了如果引入宏观本构模型以继承微观材料行为，则可以保证解耦方法的可靠性。为此，参考FRP周期性微观结构的数值材料测试结果，我们提出了一种各向异性弹塑性-蠕变-损伤组合本构模型来表示宏观材料行为，并说明类似于微观尺度塑料假设的材料行为的非弹性变形特征。通过确定宏观材料参数，进行宏观结构分析，并随后进行一致的局部化分析，可以实际证明解耦方法在实践中的实用价值。
The numerical study is made to demonstrate the applicability of the method of decoupling multi-scale analysis to the micro–macro evaluation of the mechanical behavior of fiber-reinforced plastics (FRP) that exhibits inelastic deformations and internal damage of the matrix material. During the course of this demonstration, it is confirmed that the reliability of the decoupling method can be guaranteed if the macroscopic constitutive model is introduced so as to inherit the microscopic material behavior. To this end, with reference to the results of the numerical material testing on the periodic microstructures of FRP, we propose an anisotropic elastoplastic-creep-damage combined constitutive model to represent the macroscopic material behavior and illustrate the characteristics of the inelastic deformations that resemble the material behavior assumed for plastics at micro-scale. With the identified macroscopic material parameters, the macroscopic structural analysis, which is followed by the localization analysis consistently, can be an actual proof of the utility value of the decoupling method in practice.
不连续碳纤维增强塑料复合材料微观损伤和强度性能的周期单元模拟
DOI：
--
发表时间：
2009
期刊：
Advanced Composite Materials 18(1)
影响因子：
--
作者：
西川雅章;岡部朋永;武田展雄
通讯作者：
武田展雄