Mechanics

Numerical analysis of stress and distortion waves in non-elastic rod

O. S. Sadakov, S. I. Shulzhenko

South Ural State University

Abstract: The properties of non-elastic media depend on the deformation rate, though the direct identification of relevant rheological functions at rates of the shock waves is a challenging experimental problem. One of the ways of its solution is a blow on the butt end of the material sample (a rod) and measuring the history of its deformation in several sections. Besides the appropriate experimental arrangement, there should be a calculating program with variable characteristics of the material to choose suitable media parameters. Such program using the structural model of the material is offered in the article. The calculated results for the cases of elastic, elastoplastic and elastoviscous media are given.

Keywords: wave speed, non-elastic deformation, numerical dynamic analysis.

UDC: 539.3+539.374

Received: 06.03.2012