关于复合材料层合板结构力学性能数值仿真架构的讨论
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Numerical Analysis Architecture of Mechanical Behaviors Simulation for FRP Laminated Strucutres
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    摘要:

    纤维增强树脂基复合材料(Fiber reinforced plastic, FRP)层合板结构力学性能仿真的关键在于材料损伤机理的准确描述,以完整构建材料内部损伤场在整个能量传递历程中的渐进演化。损伤场、材料属性场、应力应变场在循环迭代中相互转化,将此三场间的逻辑体系进行综合构建,就形成了FRP数值仿真体系的基本架构。材料本构、非线性求解、损伤起始准则、损伤演变准则、网格尺度及就位效应是该仿真架构的核心模块。本文对各核心模块进行了汇集和梳理,并给出优选的模块搭建方案。最后通过算例验证了所提出的FRP力学性能仿真架构及其优选搭建方案的合理性及有效性。

    Abstract:

    The core of mechanical behaviors simulation for fiber reinforced plastic (FRP) laminated structures is the construction of both material components′ mechanical responses and the coupling mechanisms between them. Simulation ultimate aim is to obtain the evolution process of timerelated damage spatial field. Damage spatial field, materialproperty field and stressstrain distribution field interact with each other. The whole logical framework which describes the coupling relationship among three spatial fields can be defined as numerical analysis architecture. Within this architecture, material components′ mechanical responses, nonlinear numerical analysis, damage initiation criterion, damage evolution criterion, size effect and insitu effect are main modules. In this paper, several methods that can constitute these modules are discussed, and the promising ones are suggested to obtain a better simulation architecture. Finally, numerical examples under three different loading cases are conducted and compared with corresponding experimental data. The comparison results show the reasonability and effectiveness of the numerical analysis architecture.

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姚卫星陈方.关于复合材料层合板结构力学性能数值仿真架构的讨论[J].南京航空航天大学学报,2017,49(5):591-598

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  • 在线发布日期: 2017-12-06
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