欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
运用车辆-轨道耦合动力学理论，建立三大件式转向架货车与轨道结构耦合动力学模型，详细考虑货车系统非线性特性，包括轮轨接触非线性、轴箱间隙非线性、楔块干摩擦非线性及转向架抗菱刚度非线性等。以我国广泛运用的转8A转向架货车为例，从理论上分析货车的横向非线性运动稳定性。结果表明，空车蛇行失稳临界速度仅为78km／h。实车运行试验的结果表明，当该型货车空车以75krn／h速度在直线轨道上运行时，车体表现出剧烈的横向蛇行运动现象，蛇行运动主频为2．69Hz，蛇行波长为7．745m。
英文摘要：
Based on the theory of vehicle-track coupled dynamics, a dynamic model for the three-piece-bogie wagon and track structure system is established. The major nonlinearities containing in the wagon system, such as the wheel/rail contact, the axle-box clearance, the wedge Coulomb friction, and the rhombus distortion of bogie frame, are considered in the model. Taking the Chinese main type wagon with Z8A three-piece-bogie as an example, the nonlinear lateral running stability of the wagon is analyzed theoretically. It is shown that the critical hunting stability speed is only 78 km/h in the case of unloaded wagon. A field running experiment is carried out and the results shows that strong hunting motion occurs when an empty wagon with the Z8A type bogie runs on a straight track with the speed of 75 km/h. The predominant frequency of the hunting motion of the car body is 2.69 Hz, and the wavelength of the hunting motion is 7.745 m.
同期刊论文项目
同项目期刊论文
Elastic-plastic finite element analysis of repeated, two-dimensional wheel-rail rolling contact unde
Wear mechanism of aluminum-stainless steel composite conductor rail sliding against collector shoe w
Comparison of tribological behaviours of AlCrN and TiAlN coatings—deposited by physical vapor deposi
Effects of tail group and chain length on the tribological behaviors of self-assembled dual-layer fi
The role of martensite reorientation in the fretting behaviour of nickel titanium shape memory alloy
A self-excited vibration model based on special elastic vibration modes of friction systems and time
Effect of a scratch on curved rail on initiation and evolution of plastic deformation induced rail c
期刊信息
位置：