傾綱能材料からなる円管の波動伝ぱ解析

概要

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Two-dimensional stress waves in a circular tube made of functionally gradient materials are analyzed numerically, when an axisymmetric impulsive load is applied to the outer surface of the tube. For the numerical analysis of the dynamic problem of the circular tube with nonhomogeneous material properties, the extended finite difference method based on integration along bicharacteristics is employed. By obtaining the numerical results for the cases of various patterns of the distributions of materials, it is demonstrated that the effect of the distribution of materials on the propagation of stress waves appears clearly. By changing the pattern of the distribution of materials suitably, it is also found that the maximum value of the caused tensile stress decreases, so that the possibility of the occurrence of impact fracture also decreases.
一般社団法人日本機械学会の論文
1991-03-25