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The Slice COmpression Test: A Preliminary Numerical Analysis

机译:切片压缩测试:初步数值分析

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摘要

We conduct a finite element analysis of the slice compression test (Shafry, Brandon and Terasaki, 1989) applied to metal-matrix composites. This test, designed to characterize interfaces in composite materials, involves pressing a composite material specimen on a soft plate so that fibers are forced to protrude and intrude into the soft plate leaving a permanent deformation. We focus on the Ti-6Al-4V matrix with SCS-6 silicon carbide fibers composite system. We conduct clauclations using ABAQUS and emply contact elements at the fiber-matrix interface which incorporate a stress-based criterion for crck initiation and frictional slipping. The analysis is performed in three stages; i) thermal analysis accounting for thermal residual stresses, ii) mechanical loading, and iii) mechanical ulnloading. The fiber protrusion length, permanent indent depth in the base matieral, and the debonding length along the fiber-matrix interface are the main output parameters.
机译:我们对应用于金属基复合材料的切片压缩测试(Shafry,Brandon和Terasaki,1989)进行了有限元分析。该测试旨在表征复合材料中的界面,涉及将复合材料样本压在软板上,以使纤维被迫伸入软板并造成永久变形。我们将重点放在具有SCS-6碳化硅纤维复合体系的Ti-6Al-4V基体上。我们使用ABAQUS和在纤维-基体界面上的emply接触元件进行扣合,并结合了基于应力的裂纹起点和摩擦滑移准则。分析分三个阶段进行: i)考虑热残余应力的热分析,ii)机械载荷,和iii)机械荷载。主要的输出参数是纤维突出长度,基层材料中的永久压痕深度以及沿纤维-基质界面的剥离长度。

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