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首页> 外文会议>ASME international mechanical engineering congress and exposition >A MULTIPHASE INTERNAL STATE VARIABLE MODEL WITH RATE EQUATIONS FOR PREDICTING ELASTOTHERMOVISCOPLASTICITY AND DAMAGE OF FIBER REINFORCED POLYMER COMPOSITES
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A MULTIPHASE INTERNAL STATE VARIABLE MODEL WITH RATE EQUATIONS FOR PREDICTING ELASTOTHERMOVISCOPLASTICITY AND DAMAGE OF FIBER REINFORCED POLYMER COMPOSITES

机译：含速率方程的多相内部状态变量模型，用于预测纤维增强聚合物复合材料的弹塑性和弹塑性损伤

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This paper agglomerates an Internal State Variable (ISV) model for polymers (Bouvard et al., 2010, 2013) with damage evolution (Horstemeyer and Gokhale, 1999: Horstemeyer et al., 2000; Francis et al., 2014) into a multiphase ISV framework (Rajagopal and Tao, 1995; Bammann et al., 1996) that features a finite strain theoretical framework for Fiber Reinforced Polymer (FRP) composites under various stress states, temperatures, strain rates, and history dependencies. In addition to the inelastic ISVs for the polymer matrix and interphase, new ISVs associated with the interaction between phases are introduced. A scalar damage variable is employed to capture the damage history of such material, which is a result of three damage modes: matrix cracking, fiber breakage, and deterioration of the fiber-matrix interface, and each damage model was well calibrated to the experimental data from Rolland et al., (2016). The constitutive model developed herein arises employing standard postulates of continuum mechanics with the kinematics, thermodynamics, and kinetics being internally consistent.
机译：本文将具有损伤演化（Horstemeyer and Gokhale，1999：Horstemeyer等，2000; Francis等，2014）的聚合物的内部状态变量（ISV）模型聚集在一起（Bouvard等，2010，2013）。 ISV框架（Rajagopal和Tao，1995; Bammann等人，1996）的特征是纤维增强聚合物（FRP）复合材料在各种应力​​状态，温度，应变速率和历史依赖性下的有限应变理论框架。除了用于聚合物基质和相间的非弹性ISV外，还引入了与相之间相互作用相关的新ISV。标量损伤变量用于捕获此类材料的损伤历史，这是三种损伤模式的结果：基质破裂，纤维断裂和纤维-基质界面的劣化，并且每种损伤模型均已根据实验数据进行了很好的校准来自Rolland等人（2016）。本文开发的本构模型是采用连续力学的标准假设得出的，其中运动学，热力学和动力学在内部是一致的。

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