Experimental investigation of the influence of friction, surface roughness and material hardness on the external load factor in threaded joints.

ABSTRACT: Threaded joints, particularly bolted joints, are critical components in the design and fabrication of mechanical systems due to their high strength and ease of disassembly. Their widespread application spans across structural engineering, transportation, bridge construction, and industrial machinery. The external load factor (χ), which characterizes the load-sharing behavior between the bolt and the clamped components, plays a vital role in assessing joint performance and reliability. This study presents an experimental investigation into the effects of friction coefficient, surface roughness, and material hardness of the clamped plates on the external load factor in threaded joints. A second-order regression model is developed using the Box-Wilson design method to quantitatively describe

SUBMITTER: Tran VT 

PROVIDER: S-EPMC12768235 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature