<正>Shouwen Yu,emeritus Professor of Applied Mechanics at Tsinghua University,was born on May 4,1939 in Xianyou County,Fujian Province of China.From 1955 to 195
In this paper, the stress singularity analysis at the crack tip on elastic bi-material inter-faces is considered. The governing equations of plane elasticity in
Based on the Floquet theory on ordinary differential equations with periodically variablecoefficients and the bifurcation approach to nonlinear equations,a nume