非一様加熱を受ける長方形板の非定常熱応力問題と圧縮応力場における破壊

概要

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This paper is concerned with a transient thermal stress problem of a rectangular plate under nonuniform heat supply and the fracture behavior (stress intensity factor) of the plate with a crack under the axial compressive stress state. Assuming that the crack is sufficiently small and is closed for a compressive stress field, then the temperature field is not disturbed by the crack. Theoretical analyses for the temperature and the stress field are developed on the basis of the two-dimensional plane-stress problem using a heat conduction equation and Airy's stress function method, and the stress intensity factor is analyzed for the biaxial compressive stress field. As an analytical model, we consider the mechanical boundary condition of prescribed displacement, and estimate the stress intensity factor of the crack tip using parameters of the crack configuration such as the location, direction, length and coefficient of friction. These numerical results are shown in graphical form.
一般社団法人日本機械学会の論文
1995-09-25