摘要
对220 t电动轮矿用自卸汽车进行整车结构设计,通过对实体结构简化处理得到整车实体模型.利用ANSYS软件建立整车满载工况的有限元模型,经模态计算得到整车的低阶固有频率,并对固有频率所表现出的主振型进行了分析.基于标准的频域路面功率谱密度函数,通过频/时变换得到时域路面随机位移函数,计算了路面随机位移时间函数激励下整车的动力响应,获取车架、前后桥、车厢、悬架等主要受力构件的位移随时间变化的规律.根据模态和动力响应分析结果针对具体研究车型的初设计提出了改进意见,指出了对主要受力构件进行疲劳分析的必要性.
This paper presents the design of 220 tons electric wheel mining dump trucks according to physical structure simplification for entire truck model.According to the entire full load truck FEM model by ANSYS software,the low order natural frequencies are obtained by modal calculation,and principal mode of the truck are also analyzed.Based on standard frequency domain pavement power spectrum density function,the time domain pavement random displacement function is converted,and dynamic response of the truck under random loading is calculated,such as the displacement,stress and strain changes characteristics with the time of truck frame,front and back seat,carriage and suspension,and so on.Finally,the paper proposes the improved designed suggestions of certain trucks based on the research work,and points out the significance of the main structure fatigue analysis.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2011年第6期83-87,共5页
Journal of Zhengzhou University（Engineering Science）
关键词
矿用自卸汽车
装载质量
有限元法
模态分析
动力响应
mining dump trucks
payload capacity
finite element method
modal analysis
dynamic respond
