Numerical and Experimental Measurement of Residual Stress in Vehicle RimUsing Incremental Hole-Drilling Method

Residual stress is a kind of stress which remains in mechanical components even after removing external forces. Residual stress mainly happens during production process of a component which in result affects significantly its design and performance. The standardASTM E837-01 analyzes residual stresses in components with flat surfaces using drilling method and presents stress calibration coefficients with constant stress profile. However, there is not any special standard to measure residual stress in curved component utilizingdrilling method. In this study, the considered model which is a vehicle rim is simulated first; then a dynamic analysis is done under road load profile using ANSYS software and the critical points of the specimen are determined; in the next step, residual strain measurementtest is performed using central drilling based on the standard; after calculating residual stresses experimentally, some suggestions are presented to reduce adverse residual stresses and enhance component’s life.

کلیدواژه ها:

Residual Stress ، Hole-Drilling Method ، Calibration Coefficient ، ASTM Standard ، Software Analysis