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Fatigue damage cumulation in materials under random loading based on an energy model
Fatigue & Fracture of Engineering Materials & Structures ( IF 3.1 ) Pub Date : 2020-11-25 , DOI: 10.1111/ffe.13387
Marta Kurek 1 , Tadeusz Łagoda 1
Affiliation  

The main aim of this paper is to present a new model of fatigue damage accumulation, which is another development of Palmgren–Miner hypothesis, as well as a modification of the Serensen–Kogayev hypothesis. The authors' proposal is based on a new way of taking into account the characteristics of the material load history. The study used a new criterion based on the critical plane defined by the pure strain energy density parameter. The proposed model of damage accumulation is verified on the basis of experimental data obtained from aluminium alloy 2017A‐T4 tests under random proportional bending with torsion.

中文翻译:

基于能量模型的随机载荷下材料的疲劳损伤累积

本文的主要目的是提出一种疲劳损伤累积的新模型,这是Palmgren-Miner假设的另一发展,也是对Serensen-Kogayev假设的修正。作者的建议是基于一种新的方式,该方式考虑了物料载荷历史的特征。该研究使用了基于纯应变能密度参数定义的临界平面的新标准。根据从铝合金2017A-T4试验获得的随机比例弯曲弯曲试验的实验数据验证了所提出的损伤累积模型。
更新日期:2020-11-25
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