Numerical and Experimental Investigation of the Effect of Cold Extrusion Process on Residual Stress and Fatigue Life of Internal Thread of High Strength Steel
Abstract:The internal thread cold extrusion process is improved to further increase the fatigue life of diesel connecting rod in order to improve its fatigue performance. Based on three-dimensional finite element model, the residual stress distribution around the cold extruded internal thread of 42CrMo4 high-strength steel plate hole structure under different edge distance ratios is analyzed in detail. The multiaxial fatigue life prediction model of thread is established based on stress-strain method, the accuracy and … Show more
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