Analysis on kinetic features of constant resistance high deformed bolt under different impact velocity

In order to study dynamic mechanics features of the constant resistance high deformed bolt,based on the impact tensile test system of the constant resistan ce high deformed bolt,the dynamics test was conducted on the bolt. The stress,deformation and other mechanics features of the bolt were analyzed under the different rate impact. The CAD 1 CAE multi software integrated finite element analysis method was applied to the numerical simulation on the working performances of the bolt during the impact period. The paper introduced the related results of the engineering monitoring and measuring test in Tangkou Mine. The indoor and outdoor test results showed that the impact force born by the constant resistance high deformation bolt would be a obvious direct proportion relationship to the external instantaneous impact force. The def ormation process of the bolt would be an elastic and plastic process. The constant high deformation bolt verified would have the features of a high constant resistance valu e,high deformation value and negative poisson's ratio effect. The numerical simulation results showed that the ftting between the numerical simulation and indoor test resul ts would not only show the accuracy of the finite element analysis method,but also could show the feasibility of the finite element analysis method to prove or replace partic al indoor test.