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首页> 外文会议>IUTAM Symposium on Computational Mechanics of Solid Materials at Large Strains Aug 20-24, 2001 Stuttgart, Germany >Cohesive Zone Modeling of Crack Growth along Different Functionally Graded Joints between Two Materials
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Cohesive Zone Modeling of Crack Growth along Different Functionally Graded Joints between Two Materials

机译：两种材料之间沿不同功能梯度接头的裂纹扩展的内聚区建模

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摘要

For crack growth in a functionally graded layer joining dissimilar elastic-plastic solids the effect of different grading profiles through the layer is investigated. The behavior is related to interface crack growth along a sharp interface between the two solids. The analyses are carried out for conditions of small scale yielding, and the boundary conditions applied on the outer edge of the region analyzed are displacements for the elastic oscillating stress singularity fields corresponding to a sharp interface. The fracture process is represented by a cohesive zone model, with the peak stress and the work of separation per unit area as basic parameters. Different parabolic variations of material properties through the graded layer are compared, for cracks growing along planes with the same local material properties.
机译：对于在连接不同的弹塑性固体的功能梯度层中的裂纹扩展，研究了整个层中不同梯度轮廓的影响。该行为与沿两个实体之间的尖锐界面的界面裂纹扩展有关。分析是针对小规模屈服条件进行的，施加在分析区域外边缘的边界条件是对应于尖锐界面的弹性振荡应力奇异场的位移。断裂过程由内聚力区域模型表示，峰值应力和单位面积的分离功为基本参数。对于沿着具有相同局部材料特性的平面生长的裂纹，比较了通过渐变层的材料特性的不同抛物线变化。

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