同济大学学报（自然科学版）2013，Vol.41Issue(4)：577-582,6.DOI:10.3969/j.issn.0253-374x.2013.04.016
柔性轮对的轮轨接触参数分析
Analysis on Wheel-Rail Contact Parameters of Elastic Wheelset
摘要
Abstract
The structural flexibility of wheelset due to bending vibration was taken into account.A simplified model of elastic wheelset was established with the axle being considered as a Timoshenko beam, and the inclined angular displacement of wheel was derived from solving its equations of motion in the steady-state harmonic force via Green' s Function.According to the geometric constraint relationship of wheel-rail contact, the constrained equations of elastic wheelset-rail contact geometry were analytically derived.The geometric parameters of wheel-rail contact were calculated by solving those equations.Comparisons of wheel-rail contact parameters between the elastic wheelset and the rigid wheelset were carried out, and discussions about the influence of wheelset' s bending deformation on wheel-rail contact locations and contact parameters were held, respectively.Results show that when the wheelset lateral displacement exceeds 5mm, the wheel-rail contact parameters change significantly due to wheelset structural flexibility; the simplified model is beneficial to wheel-rail contact calculation issues for elastic wheelset.关键词
柔性轮对/轮轨接触参数/铁木辛科梁/格林函数Key words
elastic wheelset/ wheel-rail contact parameters/Timoshenko beam/ Green's Function分类
交通工程引用本文复制引用
张宝安,陆正刚,王恒亮..柔性轮对的轮轨接触参数分析[J].同济大学学报（自然科学版）,2013,41(4):577-582,6.基金项目
国家自然科学基金(51175381) （51175381）
