LOW CYCLE FATIGUE LIFE PREDICTION USING ENERGY APPROACH AND CRITICAL PLANE PARAMETERS FOR TWO MATERIALS
A series of low-cycle fatigue experiments of tubular specimen under uniaxial, torsional and proportional multiaxial loading are performed on 63Sn-37Pb solder and a series of fatigue experiments of tubular specimens of 304 stainless steel under variable amplitude axial-torsional loading are employed. Two approaches of the low-cycle fatigue life evaluation, i.e., energy (LKN) and critical plane approaches (SWT, FS) are systematically analyzed by the fatigue life data for two materials. A life computation procedure is employed in which rainflow cycle counting on suitable plane for different model and linear damage rule are used to calculate the damage. The life prediction results are compared between the two materials. On the whole, the shear damage parameter is suitable to multiaxial fatigue life evaluation of 63Sn-37Pb solder. For 304 stainless steel, in spite of the models based on the different critical plane, the predictive results are acceptable. Two materials show different material properties in the same loading path that can be proved by previous papers, so the same model gives the different prediction results, better for one material and worse for another.
D. Jin X. Chen J. H. Wu
School of Mechanical Engineering, Shenyang Institute of Chemical Technology, Shenyang, 110142, P.R.C School of Chemical Engineering & Technology, Tianjin University, Tianjin, 300072, P.R.China
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）