Influence of friction in compression testing of a chromoplastic polymer

8th International Conference on Advanced Concepts in Mechanical Engineering

Atanasiu, C.^1 ; Sorohan, S.^1 ; Baciu, F.^1

Department of Strength of Materials, University POLITEHNICA of Bucharest, Splaiul Independenei 313, Bucharest

060042, Romania^1

关键词: Experimental research;    Frontal surface;    State of stress;    State of tension;    Test machine;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/444/6/062001/pdf
DOI  :  10.1088/1757-899X/444/6/062001

来源: IOP

【 摘 要 】

The results of the compression test of some specimens made of a chromoplastic polymer show that due to the friction between their flat frontal surfaces and the cobalt discs of the test machine to which forces are applied, the state of stress in the specimens is no longer uniaxial and homogeneous, the deformations along their axis being uneven. Experimental research and numerical analysis using finite element method confirms this appreciation and the differences that occur as regards the state of tension over the situation where friction is absent.