考虑上部管柱变形影响的减震器动力学分析  

Analysis of dynamic characteristic of an absorber with considering the influence of upper tubular column deformation

作　　者：崔之健[1] 胡洪平[2] 胡元太[2] 陈传尧[2] 

机构地区：[1]西安石油大学石油工程学院,陕西西安710065 [2]华中科技大学土木工程与力学学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2008年第9期106-108,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：针对在冲击载荷下长测试管柱的减震问题,利用行波法建立了减震系统动力学模型,与以往研究模型进行了比较,分析了减震器在冲击载荷下的动力学特性.结果表明:上部测试管柱的变形将增大减震器系统的阻尼系数,同时减小减震器系统的固有频率,从而增强减震效果;测试管柱材料系数和减震器参数比值影响减震效果,比值愈大,减震效果愈好.In order to absorb vibration of long test and measurement tubular column due to action of shock load, a dynamic model of absorber was set up base on traveling wave method and compared with common model. The dynamic characteristic of absorber which under shock loads action was analyzed. Numerical results show that deformation of upper tubular column can increase damp coefficient, reduce natural frequency of shock mitigation system simultaneously, thus enhance absorption effect on vibration; the ratio a of material parameter of tubular column on absorber parameter has an important influence on the absorption result, bigger ratio a is with better performance of the absorber.

关 键 词：减震器 行波法 材料参数比 冲击载荷 长管柱 

分 类 号：TH535.1[机械工程]