Analysis of Stress Distribution in Tensile Test （拉伸试验的应力分布分析）.pdfVIP

Universal Journal of Mechanical Engineering 1(4): 109-113, 2013 DOI: 10.13189/ujme.2013.010401 Analysis of Stress Distribution in Tensile Test Specimens Using Modified Versions of a Novel Gripping System András Mucsi Faculty of Mechanical and Safety Engineering, Óbuda University, Budapest, 1081, Népszínház út. 8., Hungary *Corresponding Author: mucsi.andras@bgk.uni-obuda.hu Copyright © 2013 Horizon Research Publishing All rights reserved. Abstract This paper deals with the effect of novel system on the stress distribution inside the test piece can be gripping systems developed for tensile testing on the stress measured by the widely used strain gauge technique [2, 9-11], distribution inside the test piece. The uniformity of the neutron diffraction [12] and interferometry [13]. stress distribution plays a decisive role in measuring the Gray and McCombe [2] studied the effect of wedge and upper yield strength and creep behavior of materials. In this screw grips on the stress distribution in round specimens. study two modified versions of a recently developed They used strain gauges mounted onto the surface of the test gripping system are introduced and tested together with the piece and obtained that the grips could cause even 80% original version. The tests consist of measuring the bending bending stress/average stress ratio. Sun [3] and Hutchinson stress/axial stress ration during elastic loading of the test [4] used inhomogeneously annealed steel wires to avoid piece. The bending stress/average stress ratio was measured yielding at the