Reflection and Transmission of the Elastic Waves in the Bar with unhomogeneous Regions and Various Sections
Wang Congyue, Xia Yuanming
(Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui 230027, P.R.China£©
Xie Yanning
(Teaching and Research Section, College of Automobile Management of The People' s Liberation Army, Benbu, Anhui 233011, P.R.China£©

Abstract: Based on the general theory of the one-dimensional elastic wave, the analytical solution of the stress wave propagation in the bar with unhomogenous regions and various sections is obtained. This solution's feasibility is checked by the two-dimensional axis-symmetric finite element method. Using this method, the law of the stress wave propagation is revealed. Especially for the bar with internal interfaces (i.e. connection regions), the equivalent simplified analysis is gained. The analysis shows the connection regions have an important role on the stress wave propagation.
Keywords: the bar with unhomogenous regions and various sections, stress wave propagation, two-dimensional axis-symmetric finite element analysis.