Nonlinear Modeling and Identification of Structural Joint by Response Control Vibration Test

查看全文 作　　者：LIU [1]Xin;WANG [2]Lixiao;CHEN [1]Qidong;SUN [3]Beibei

机构地区：[1]School of Mechanical Engineering,Changshu Institute of Technology,Changshu 215500,P.R.China;[2]School of Mechanical Engineering,Suzhou University,Suzhou 215000,P.R.China;[3]School of Mechanical Engineering,Southeast University,Nanjing 210096,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》索引2019年第36卷第6期,共13页

摘　　要：Components of mechanical product are assembled by structural joints,such as bolting,riveting,welding,etc.Structural joints introduce nonlinearity to some engineering structures,and the nonlinearity need to be modeled precisely.To meet serious quality requirements,it is necessary to detect and identify nonlinearity of mechanical products for structural optimization.Modal test to acquire a dynamic response has been applied for decades,which provides reliable results for finite element(FE)model updating.Here response control vibration test for identification of nonlinearity is presented.A nonlinear system can be regarded as linearity for particular steady state response,and classical linear analysis tool is applicable to extract modal data for particular response.First,its applicability is illustrated by some numerical simulations.Subsequently,it is implemented on experimental setup with structural joints by shaking table.The stiffness and damping function dependent of relative displacement are fitted to describe its inherent nonlinearity.The spring and damping forces are identified by harmonic balance method(HBM)to predict output response.Based on the identified results,the procedure is recommended that it allows a reliable measurement of nonlinearity with a certain accuracy. 关键词：nonlinear identification shaking table response control vibration test relative displacement structural joint constant response

相关文献

参考文献（21）
引证文献（2）
耦合文献（18）

参考文献(21)

引证文献(2)

耦合文献(18)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Nonlinear Modeling and Identification of Structural Joint by Response Control Vibration Test

参考文献(21)

引证文献(2)

耦合文献(18)

用户提示