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首页> 外文会议>IUTAM Symposium on Multiscale Modelling of Damage and Fracture Processes in Composite Materials; 20050523-27; Dolny(PL) >NUMERICAL AND EXPERIMENTAL MODELS OF THE FRACTURE IN THE MULTI-LAYERED COMPOSITES
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NUMERICAL AND EXPERIMENTAL MODELS OF THE FRACTURE IN THE MULTI-LAYERED COMPOSITES

机译：多层复合材料断裂的数值和实验模型

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摘要

Advanced mechanical and structural applications require accurate assessment of the damage state of materials during the fabrications as well as during the service. Due to the complex nature of the internal structure of the material, composites including the layered composite often fail in a variety of modes. The failure modes very often are influenced by the local material properties that may develop in time under heat and pressure, local defect distribution, process induced residual stress, and other factors. Consider a laminate composite in plane stress conditions, multi-layered beam bonded to planes having shear modulus G_i and Poissons ratio ν_l respectively, subjected to bending. The behaviour of the cracks depends on the cracks configuration, size, orientation, material properties, and loading characteristic. The fracture mechanics problem will be attacked using the photoelastic visualisation of the fracture events in a model structure. The proposed experimental method will developed fracture mechanics tools for a layered composite fracture problem.
机译：先进的机械和结构应用要求在制造以及维修过程中准确评估材料的损坏状态。由于材料内部结构的复杂性，包括层状复合材料在内的复合材料通常会以多种方式失效。失效模式通常受局部材料特性的影响，局部材料特性可能会在热和压力下及时发展，局部缺陷分布，过程引起的残余应力和其他因素。考虑在平面应力条件下的层压复合材料，多层梁结合到分别具有剪切模量G_i和泊松比ν_1的平面上，并经受弯曲。裂纹的行为取决于裂纹的形状，大小，方向，材料特性和载荷特性。断裂力学问题将通过模型结构中断裂事件的光弹性可视化来解决。所提出的实验方法将为层状复合材料断裂问题开发断裂力学工具。

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