摘要
为了系统地分析弹簧的刚度特性以及安全性能,更准确地模拟实际的运行场景,采用通用有限元分析软件Hypermesh和Abaqus联合仿真的方法,在模拟实际工况的前提下进行圆柱螺旋弹簧的刚度分析和模态分析。通过施加对悬架弹簧装配系统中摆臂的转动控制模拟行驶中的真实环境,通过后处理模块,分析运动过程的位移和接触反力数据,利用拟合的方法得到了弹簧的位移-载荷曲线并求得了汽车悬架弹簧的刚度数据,并与弹簧设计计算阶段的理论数据进行验证比较,结果表明该有限元分析模型能够准确地模拟计算弹簧的刚度值;对弹簧施加边界约束条件并进行动力学模态分析,获得了弹簧的前6阶固有频率和振型数据,结果表明弹簧的一阶固有频率远大于汽车行驶时由于路面不平所带来的激励频率,系统不会由此发生共振,从而验证了车辆行驶时的安全性能。
In order to systematically analyze the stiffness characteristics and stable safety performance of the spring,and more accurately simulate the actual operating scene,the universal finite element analysis software Hypermesh and Abaqus co-simulation method were used to simulate the stiffness analysis and modal analysis of the cylindrical spiral spring under the premise of simulating the actual working conditions.By applying the rotation control of the swing arm in the suspension spring assembly system to simulate the real environment during driving,through the post-processing module,the displacement and contact reaction force data of the movement process were analyzed,and the spring displacement-load curve was obtained by the fitting method.The stiffness data of automobile suspension springs were obtained and compared with the theoretical data in the spring design calculation stage.The results show that the finite element analysis model can accurately simulate and calculate the stiffness value of the spring.The first six natural frequencies and vibration modes of the spring were obtained by applying boundary constraints and dynamic modal analysis.The results show that the first-order natural frequency of the spring is much greater than the excitation frequency caused by the uneven road surface when the car is driving,and the system will not resonate due to this,thereby verifying the safety performance of the vehicle when driving.
作者
李先飞
陈勇
方舟
赵英泽
黄基
Li Xianfei;Chen Yong;Fang Zhou;Zhao Yingze;Huang Ji(School of Mechanical Engineering,University of South China,Hengyang,Hunan 421001,China;Hwaway Technology Co.,Ltd.,Shaoxing,Zhejiang 311800,China;Shandong Jiaotong University,Jinan 250357,China)
出处
《机电工程技术》
2022年第4期76-80,共5页
Mechanical & Electrical Engineering Technology
关键词
悬架弹簧
联合仿真
刚度分析
路面激励
模态分析
suspension spring
co-simulation
stiffness analysis
pavement incentives
modal analysis
