铁道科学与工程学报2026，Vol.23Issue(4)：1568-1577,10.DOI:10.19713/j.cnki.43-1423/u.T20250951
高速车轮钢材料疲劳裂纹扩展行为的近场动力学表征方法研究
Study on characterization method of fatigue crack propagation for high-speed wheel steel material using peridynamics
摘要
Abstract
In order to study the fatigue crack propagation behavior of high-speed wheel steel material,the peridynamic theory,which is suitable for solving discontinuous problems such as fracture,was introduced,and a characterization method for the fatigue crack propagation of domestic rolled high-speed wheel steel material was established using peridynamics.Compact tensile specimens were prepared using domestic rolled high-speed wheel steel material,and fatigue crack propagation rate tests were conducted for the wheel rim material.Based on the test results of the material crack propagation rate,the material bond fatigue failure conditions were determined through a parameter inversion method,and a characterization model for the fatigue crack propagation of high-speed wheel steel material was constructed.Subsequently,the characterization model was validated by comparing the experimental and simulation results under different loading conditions.The results show that under the condition of a maximum load of 5.0 kN and a load ratio of 0.1,based on the crack propagation rate test results of compact tensile specimens and the loading simulation model,the undetermined constants in the fatigue failure conditions of domestic rolled high-speed wheel steel material bonds were inverted,and A and M values were obtained to be 7.00×105 and 3.776 5,respectively.On this basis,the maximum load was increased to 5.5 kN to obtain fatigue crack propagation test data of compact tensile specimens during the loading process.The experimental results obtained were in satisfactory agreement with the simulation results,verifying the correctness of the proposed bond fatigue failure conditions for high-speed wheel steel material.This achieves accurate characterization of the fatigue crack propagation behavior of high-speed wheel steel material.The research results provide references for establishing the fatigue constitutive relationship of wheel component materials and lay the foundation for further research on fatigue crack propagation of wheels under complex load conditions.关键词
高速车轮钢材料/近场动力学/裂纹扩展/表征方法/失效Key words
high-speed wheel steel material/peridynamics/fatigue fracture/characterization method/failure分类
交通工程引用本文复制引用
马晓川,王亚杰,任学冲,尹伟彬,赵培阳..高速车轮钢材料疲劳裂纹扩展行为的近场动力学表征方法研究[J].铁道科学与工程学报,2026,23(4):1568-1577,10.基金项目
国家自然科学基金资助项目(52108406,52368060) （52108406,52368060）
中国国家铁路集团有限公司科技研究开发计划实验室基础研究资助项目(L2021J004) （L2021J004）
江西省杰出青年基金资助项目(20232ACB214010) （20232ACB214010）
江西省双千计划人才资助项目(jxsq2023201084) （jxsq2023201084）
