Effect of Material Constant and Specimen Size on Residual Stress

Residual Stress in Bonded Dissimilar Materials (Part II)

Abstract

This paper deals with the effect of mechanical and physical properties, and specimen size on residual stress in bonded dissimilar materials using Boundary Element Method (BEM). The sign of residual stress changes when the ratio of linear expansion (α^B/α^A) becomes greater than the unit value. The value of residual stress is chiefly influenced by the ratios of Young's modulus (E^B/E^A) and α^B/α^A, but is little influenced by Poisson's ratio (v^B, v^A). When the height of specimen is greater than the width of specimen, the change of height does not affect the residual stress in the neibourhood of bond line. When the width is greater than the height, the residual stress is not changed by the width.