摘要
基于气体热力学方程、空气弹簧隔振器静力学模型,采用物理建模、模型辨识建模相结合的混合建模方法,建立了一种空气弹簧隔振器热膨胀变形计算模型,并通过数值仿真对轴向承载力、斜置安装角度、静刚度等主要影响因素进行了分析。仿真结果表明:增大轴向承载力、降低其垂向的静刚度将增大热膨胀变形量;增加斜置安装角可减小热膨胀变形量。应用该计算模型可以获取单个空气弹簧隔振器在不同环境温度下的热膨胀变形量,且具有较好的计算精度并可进一步推广应用于空气弹簧隔振装置的热膨胀变形评估计算。
A thermal expansion transfiguration calculation model was proposed based on the air thermodynamics equation and the static mechanics model of air spring.By using physical modeling and model recognition as a hybrid modeling method,this model was established.Some main factors such as axial load,setting angle and vertical stiffness were analyzed by simulating.The simulated results indicate that increasing vertical load or decreasing vertical stiffness can enlarge the thermal expansion transfiguration and that increasing setting angle can reduce the thermal expansion transfiguration.The model can be used to obtain the thermal expansion transfiguration of a single air spring under different temperatures and can further be applied to evaluating the thermal expansion transfiguration for the air spring system.Moreover,the model shows the precision in calculation and applicability in engineering.
出处
《海军工程大学学报》
CAS
北大核心
2010年第6期56-59,共4页
Journal of Naval University of Engineering
基金
国家部委基金资助项目(51310040203)
关键词
空气弹簧
模型辨识
混合建模
热膨胀变形
air spring
model recognition
hybrid modeling
thermal expansion transfiguration
