Experimental characterization of materials subjected to combined loading conditions

7th International Conference on Advanced Concepts in Mechanical Engineering

Andrusca, L.^1 ; Goanta, V.^1 ; Barsanescu, P.D.^1 ; Savin, A.^2

Mechanical Engineering, Mechatronics and Robotics Department, Gheorghe Asachi Technical University of Iasi, Romania^1

National Institute of RandD for Technical Physics, Iasi, Romania^2

关键词: Circular cross-sections;    Experimental characterization;    Experimental investigations;    Life experiences;    Materials behavior;    Multiaxial stress state;    Structure elements;    Universal testing machines;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/147/1/012092/pdf
DOI  :  10.1088/1757-899X/147/1/012092

来源: IOP

【 摘 要 】

In real life experience, machine and structure elements are subjected to complex loading history. Combined loading testes facilitate the understanding of materials behavior subjected to multiaxial stress state. In this paper are presented experimental investigations used to evaluate the influence of an initial type of loading on material properties which will be subsequently tested through another load type. Initial tests are tension tests, by different elongations, and subsequent tests are torsion tests, until break. Circular cross section specimens will be used in these tests. Tension tests have been performed on a universal testing machine. Subsequently torsion tests have been conducted through an attachable device. It was found that the energy associated with plastic deformation obtained by subsequent torsional tests has the dominant influence on the material total plastic energy, although initial test was tension.