Data underlying the PhD thesis: A numerical and experimental study of ratcheting for head check initiation in rails

This dataset is to supplement the doctoral dissertation of 'A numerical and experimental study of ratcheting for head check initiation in rails'. The dataset contains the multiple simulation and test data that demonstrate the results of the each of the main chapters of this dissertation. The data and coding in Chapter 1 explains the elasto-plastic behaviours of rail steels. Data provided for Chapter 2 demonstrates the simulated ratcheting behaviours in rails with a new FE wheel--rail rolling contact modelling designed for this study. For Chapter 3, the data contains the surface and subsurface contact stress states post-processed from wheel-rail rolling contact with a cylindrical and a conical wheel. In Chapter 4, data from the uniaxial monotonic and cyclic tests and the relevant calibrated constitutive models are summarised and presented accompanied by the Python codes. The final Chapter 5 contains the data of the ratcheting simulation in rails that demonstrate the detailed ratcheting behaviour of the two tested rail steels under wheel--rail rolling contacts.

本数据集用于补充题为《钢轨轨头核伤萌生过程中棘轮效应的数值与实验研究》的博士学位论文。数据集涵盖支撑该论文各核心章节的多组模拟与测试数据。第一章相关数据与代码阐释了钢轨钢材的弹塑性行为。第二章提供的数据，展示了基于本研究自研的有限元(Finite Element)轮轨滚动接触模型所模拟得到的钢轨棘轮行为。第三章数据包含基于圆柱轮与圆锥轮轮轨滚动接触仿真后处理得到的表面及亚表面接触应力状态。第四章汇总并呈现了单轴单调与循环加载试验数据，以及经校准的相关本构模型，同时附带Python代码文件。第五章数据集包含钢轨棘轮效应仿真数据，用以展示两种受试钢轨钢材在轮轨滚动接触条件下的精细化棘轮行为特征。