Influences of various parameters on shear stiffness of bolted joints subjected to shear load

Abstract Parameters which affect shear stiffness characteristics of bolted joints subjected to load should be elucidated in order design mechanical structures for functionality focusing not only on their strength and self-loosening but also stiffness. In this study, we have both experimentally analytically investigated the behaviors a joint primary parameters determine joints. The experiments been conducted applying four times repeatedly clamped plates bolt/nut assembly with washers. We measured at slippage started occur between plates. Four types washers were used different contact areas reveal effect area FE analysis under same conditions. As results, it was seen that slightly increased an increase clamp force joint. influenced by number loading cycles. It amount rotational deformation depended Although rotation very small until occurrence, remarkably after occurred. general, is well-known joining portion lap jointed spot welding, example, rotationally deformed, has never inclination angle due depends occurrence contacting surface roughness experiments, cannot clearly its But from result friction coefficient had slight influence shows mainly slip resistance results can applied control lap-jointed welding so on.