Tomaszewski Tomasz, Strzelecki Przemysław, Mazurkiewicz Adam, Musiał Janusz
Faculty of Mechanical Engineering, University of Science and Technology, al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, Poland.
Materials (Basel). 2020 Mar 5;13(5):1148. doi: 10.3390/ma13051148.
In this paper, the sensitivity to the type of loads (axial and bending loading) of selected construction materials (AW6063 T6 aluminum alloy, S355J2+C structural steel, and 1.4301 acid-resistant steel) in high-cycle fatigue was verified. The obtained fatigue characteristics were described by a probabilistic model of the 3-parameters Weibull cumulative distribution function. The main area of research concerned the correct implementation of the weakest link theory model. The theory is based on a highly-stressed surface area and a highly-stressed volume in the region of the highest stresses. For this purpose, an analytical model and a numerical model based on the finite element method were used. The model that gives the lowest error implemented in specific test conditions was determined on the basis of high-cycle fatigue analysis. For the analyzed materials, it was a highly-stressed volume model based on the weakest link theory.
本文验证了选定建筑材料（AW6063 T6铝合金、S355J2+C结构钢和1.4301耐酸钢）在高周疲劳中对载荷类型（轴向和弯曲载荷）的敏感性。所获得的疲劳特性由三参数威布尔累积分布函数的概率模型描述。主要研究领域涉及最弱链理论模型的正确实施。该理论基于高应力表面积和最高应力区域中的高应力体积。为此，使用了基于有限元法的解析模型和数值模型。基于高周疲劳分析确定了在特定测试条件下误差最低的模型。对于所分析的材料，它是基于最弱链理论的高应力体积模型。
