摘要
疲劳破坏是工程应用构件失效的最主要原因之一.但由于疲劳实验成本过高,有必要用力学性能对疲劳强度进行预测.基于真实应力应变曲线,建立了一种新型的疲劳强度预测模型,并运用这种模型计算疲劳强度,与“升降法”和Basquin公式计算的疲劳强度作对比.结果表明:该模型仅需通过抗拉强度和加工硬化强度就可得到材料的疲劳强度,并且适用于其他钢种,极大地节约了成本,精确度也较高.
Fatigue failure is one of the most important reasons for the failure of engineering application components.However,due to the high cost of fatigue experiments,it is necessary to use mechanical properties to predict fatigue strength.Based on the true stress-strain curves,a novel model for fatigue strength prediction is established and is used to calculate the fatigue strength.The strength predicted is compared with that calculated by the staircase method and the Basquin equation.The results show that the model could obtain the fatigue strength of the materials only by using tensile strength and work-hardening strength,and it is suitable for other steels,which greatly saves costs and increases accuracy.
作者
段红燕
唐国鑫
盛捷
曹孟杰
裴磊
田宏伟
DUAN Hongyan;TANG Guoxin;SHENG Jie;CAO Mengjie;PEI Lei;TIAN Hongwei(School of Mechanical and Electrical Engineering,Lanzhou University of Technology,Lanzhou 730050,China;School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China)
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2022年第6期801-808,共8页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金(51665028)资助项目。
作者简介
段红燕(1978-),女,河北省邯郸市人,副教授,从事疲劳与断裂研究;通信作者:唐国鑫,男,硕士生,电话(Tel.):13006531228,E-mail:tanggx9458@163.com。
