fluid structure interaction for circulation valve of hydraulic shock absorber
来源期刊：中南大学学报(英文版)2013年第3期
论文作者：CHEN Qi-ping(陈齐平) SHU Hong-yu(舒红宇) FANG Wen-qiang(方文强) HE Lian-ge(何联格) YANG Mao-ju(杨茂举)
文章页码：648 - 654
Key words：hydraulic shock absorber; circulation valve; finite element method; fluid structure interaction; simulation analysis
Abstract: Based on the working principle and the damping characteristic of hydraulic shock absorber, a fluid structure interaction method was presented, which was used to analyze the microcosmic and high-frequency processing mechanism of fluid structure interaction between circulation valve and liquid of hydraulic shock absorber. The fluid mesh distortion was controlled by the CEL language, and the fluid structure interaction mathematical model was established. The finite element model was established by ANSYS CFX software and was analyzed by dynamic mesh technique. The local sensitive computational area was meshed by prismatic grid, which could reduce the negative volume problem during the simulation. The circulation valve and liquid of hydraulic shock absorber were simulated and analyzed under the condition of sinusoidal inlet velocity loads. Flow characteristic and dynamics characteristic were obtained. The pressure distribution and the displacement of circulation value were obtained, and the acceleration curve of circulation valve was simulated and analyzed. The conformity of the final simulation results with the experimental datum indicates that this method is accurate and reliable to analyze the dynamics characteristic between circulation valve and liquid of hydraulic shock absorber, which can provide a theoretical foundation for optimizing hydraulic shock absorber in the future.
CHEN Qi-ping(陈齐平)1, SHU Hong-yu(舒红宇)1, FANG Wen-qiang(方文强)1, HE Lian-ge(何联格)1, YANG Mao-ju(杨茂举)2
(1. State Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China;
2. Chongqing Zhongyi Shock absorber Liability Co., Ltd., Chongqing 401120, China)
Abstract:Based on the working principle and the damping characteristic of hydraulic shock absorber, a fluid structure interaction method was presented, which was used to analyze the microcosmic and high-frequency processing mechanism of fluid structure interaction between circulation valve and liquid of hydraulic shock absorber. The fluid mesh distortion was controlled by the CEL language, and the fluid structure interaction mathematical model was established. The finite element model was established by ANSYS CFX software and was analyzed by dynamic mesh technique. The local sensitive computational area was meshed by prismatic grid, which could reduce the negative volume problem during the simulation. The circulation valve and liquid of hydraulic shock absorber were simulated and analyzed under the condition of sinusoidal inlet velocity loads. Flow characteristic and dynamics characteristic were obtained. The pressure distribution and the displacement of circulation value were obtained, and the acceleration curve of circulation valve was simulated and analyzed. The conformity of the final simulation results with the experimental datum indicates that this method is accurate and reliable to analyze the dynamics characteristic between circulation valve and liquid of hydraulic shock absorber, which can provide a theoretical foundation for optimizing hydraulic shock absorber in the future.
Key words:hydraulic shock absorber; circulation valve; finite element method; fluid structure interaction; simulation analysis
