国内外振动压实系统的动力学模型及展望  

Dynamic Models Home and Abroad of Vibratory Compacting Systems and Its Prospects

作　　者：沈培辉[1] 林述温[1] 

机构地区：[1]福州大学机械工程及自动化学院

出　　处：《工程机械》2007年第9期30-32,52,共4页Construction Machinery and Equipment

基　　金：福建省重大专项(2006HZ0002)

摘　　要：介绍目前国内外几种具有代表性的物料振动压实系统动力学模型:线性模型、分段线性的非线性模型、滞回特性非线性模型和带有慢变参数滞回特性的非线性模型。用统一的二自由度系统分析比较各种振动模型的特点,根据压实机械和工作介质的设计需求和本质特性,充分考虑振动轮与工作介质之间时间上和空间上的非线性本质特性,提出带有慢变参数滞回特性的非线性振动模型,能更为合理地反映工作介质的实时压实程度。如果采用智能控制振动方式,可以提高压实效率,同时认为考虑振动轮与机架之间减振系统的非线性,可以为这一环节的设计提供理论依据,进一步改善驾驶的舒适性以及设备与环境之间的协调性。Several representative dynamic models home and abroad of material vibratory compacting systems are presented: linear model, nonlinear model with linear segment, nonlinear model with hysteretic characteristics and nonlinear model with hysteretic characteristics of slow-varying parameter. Characteristics of various vibratory models are analyzed and compared with uniform two freedom degree system. According to design demand of compacting machinery and work medium and their natural properties, a nonlinear model with hysteretic characteristics of slow-varying parameter is suggested by taking full account on the nonlinear natural properties between vibratory drum and work medium in time and space dimensions, which reflects real-time compactness of work medium more rationally. If intelligently controlled vibratory mode is applied, compacting efficiency could be increased. And it is also acknowledged that a theoretical basis can be presented in this design stage considering nonlinearity of vibration damping system between vibratory drum and machine frame, which will further improve operation comfort and environment harmony of the equipment.

关 键 词：压实机械 动力学 振动模型 非线性 

分 类 号：TU66[建筑科学—建筑技术科学]