Impact Deformation Behavior of a Specimen Connected with the Bar (1st Report)

Effect of Reflection and Transmission Coefficients on Elastic Deformation

Abstract

This paper describes a theoretical analysis on the elastic deformation of a specimen connected with the bar used for a load cell in impact test. Reflected and transmitted stress waves are considered in the analysis. Equations for calculating the stress and strain in the deformation are derived from strain waves. As results, the deformation behavior is affected by the reflection and transmission coefficients. The effects of coefficients are remarkable in the low impact rates. It is clarified that the lower limit of the impact rate in this method should not be estimated by the length of the bar, but by the rate during stable deformation.