Stańco Mariusz, Kowalczyk Marcin
Department of Machine and Vehicle Design and Research, Faculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, Poland.
Materials (Basel). 2022 Feb 18;15(4):1539. doi: 10.3390/ma15041539.
Most special vehicles on public roads and off-road are equipped with various suspension systems. The suspensions used in trucks are designed to absorb the energy that results from overcoming uneven ground. These suspensions are divided into dependent and independent ones. Knowledge of the loads that occur while driving a vehicle, mainly off-road, is critical from the point of view of the adhesion and fatigue life of the suspension system. In the case of four-axle cars with 2 + 2 axles, in which the first two axles are equipped with a dependent suspension based on leaf springs, only one axle may carry the load. This paper attempts to analyze the results of experimental tests carried out on a vehicle in the conditions of roads with an unstable surface such as dirt roads, gravel roads, and roadless tracks. An analysis of fatigue life estimation is presented using equivalent stress values. It was also determined how the use of front axles load equalizing elements in the tested car influences their fatigue life.
大多数在公共道路和越野行驶的特种车辆都配备了各种悬挂系统。卡车上使用的悬挂系统旨在吸收克服不平地面产生的能量。这些悬挂系统分为非独立式和独立式。从悬挂系统的附着力和疲劳寿命角度来看，了解车辆行驶时产生的载荷，尤其是越野行驶时的载荷至关重要。对于采用2 + 2轴的四轴汽车，其中前两轴配备基于板簧的非独立悬挂，只有一个轴可以承载载荷。本文试图分析在土路、砾石路和无路轨道等表面不稳定的道路条件下对车辆进行的实验测试结果。使用等效应力值对疲劳寿命估计进行了分析。还确定了在测试车辆中使用前轴载荷均衡元件如何影响其疲劳寿命。
