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Surface Strains Due to Face Loading of a Slot in a Layered Half-Space

机译:分层半空间中插槽的面载荷导致的表面应变

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摘要

A solution is presented that will allow the compliance method for residual stress measurement to be applied to layered materials. The solution is for surface strains due to arbitrary normal stress loading on the faces of a slot in a layered half-space. The materials are homogeneous isotropic elastic with different elastic constants and the slot may penetrate into the substrate. The solution is accomplished using the body force method and the solution for a point force in two bonded half spaces. The results indicate that, for residual stress measurement, the effects of the substrate properties are significant for materials with elastic moduli differing by 50 percent or more when the slot penetrates to at least one-half of the layer thickness.
机译:提出了一种解决方案,该解决方案允许将残余应力测量的依从性方法应用于层状材料。该解决方案适用于由于在分层的半空间中的槽的表面上施加任意法向应力而导致的表面应变。这些材料是具有不同弹性常数的均质各向同性弹性材料,并且缝隙可能会渗透到基材中。该解决方案是使用体力方法完成的,并针对两个结合的半空间中的点力进行了解决。结果表明,对于残余应力测量,当缝隙穿透到层厚度的至少一半时,对于弹性模量相差50%或更多的材料,基板性能的影响非常明显。

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