New energy model for fatigue life determination under multiaxial loading with different mean values
New energy model for fatigue life determination under multiaxial loading with different mean values
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DOI：
10.1016/j.ijfatigue.2014.04.008
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发表时间：
2014-09-01
影响因子：
6
通讯作者：
Lagoda, Tadeusz
中科院分区：
文献类型：
--
作者：
Kluger, Krzysztof;Lagoda, Tadeusz
本文提出了一种新的应力-应变参数，用于估计平均应力影响下的多轴应力状态下的疲劳寿命。根据建议的变型计算的疲劳寿命的结果已经与由2017 A-T4铝合金和S355 J 0和30 NCD 16合金钢制成的试样在等幅弯曲和扭转应力以及弯曲和扭转的比例组合条件下的疲劳试验的结果进行了比较，同时考虑到平均应力。实验结果与Goodman、Gerber、Morrow、Findley、Dang货车、McDiarmid、Papadopoulos和Smith-Watson-Topper的模型计算结果进行了比较。对计算结果进行了统计分析，计算了散射带，并将计算结果与实验数据进行了比较。(C)2014爱思唯尔有限公司版权所有。
The paper proposes a new variant of the stress-strain parameter used to estimate the fatigue life in the multiaxial stress states with the influence of mean stress. The results of the fatigue life calculated according to the proposed variant have been compared to the results of fatigue tests of specimens made of 2017A-T4 aluminum alloy and S355J0 and 30NCD16 alloy steel in conditions of constant amplitude bending and torsion stress, as well as proportionate combinations of bending and torsion, while taking into account the mean stress. The experimental results have been compared to the results of calculations using models by Goodman, Gerber, Morrow, Findley, Dang Van, McDiarmid, Papadopoulos and Smith-Watson-Topper. Statistical analysis have been carried out for the results of calculations, involving the calculation of a scatter band for results of the comparison of experimental data with calculations. (C) 2014 Elsevier Ltd. All rights reserved.