摘要
探讨汽车筒式液阻减振器节流阀非线性动态特性的有限元分析方法。利用ADINA有限元分析软件分别建立板阀型节流阀的结构动力学模型和流体动力学模型 ,并利用其液—固耦合分析模块 ,对此耦合模型进行瞬态响应分析 ,得到阀的非线性节流特性、阀板的动态运动响应以及节流阀内流场特性。模拟计算结果与实验结果具有较好的一致性 ,节流阀在工作时开度很小 ,液体压力场具有强不均匀性 ,液体对阀板的作用力也具有不均匀性 ,板阀型预载阀的节流特性接近于线性 ,节流通道在大流量下对节流阀的特性有较大影响。
A finite element simulation of nonlinear dynamic characteristics of hydraulic damper's valve is studied. The structure and characteristics of the valve are analyzed, and a three-dimensional fluid-structure interaction (FSI) model of the valve is built with finite element analysis tool ADINA. The theory and key points of FSI analysis are numerically tested. The dynamic coupling characteristics of the valve, the kinematic response of the disc, transient fluid pressure and velocity distribution are simulated using the ADINA FSI module. The results agree well with the test data. It is shown that the characteristics of the valve can be predicted accurately, which will be essential to further investigations into the characteristics of the hydraulic dampers. The finite element FSI simulation method can play a key role in the design and development of the hydraulic dampers.
出处
《机械强度》
CAS
CSCD
北大核心
2003年第6期614-620,共7页
Journal of Mechanical Strength
基金
国家自然科学基金资助项目 (课题号 598750 4 4 )
同时得到丰田汽车公司的资助~~
