Experimental study of the cyclic visco-elasto-plastic behaviour of a polyamide fibre strap

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:46

Article

Bles, G.¹  Nowacki, W. K.²  Tourabi, A.³ 

[1] Univ Brest, ENSIETA, Ecole Ensieta MSN, ENIB,Lab Brestois Mecan & Syst,EA4325, F-29806 Brest 9, France

[2] Inst Fundamental Technol Res, PL-0049 Warsaw, Poland

[3] Lab 3SR, F-38041 Grenoble 9, France

关键词: Polymers;    Fibres;    Ropes;    Viscoelastic;    Nonlinear elasticity;    Relaxation;    Creep;   

DOI  :  10.1016/j.ijsolstr.2009.02.015

来源: Elsevier

【 摘 要 】

Experimental tensile tests were performed on polyamide-based (PA66) woven strap samples. A strain measuring device was used to measure the strain in the middle and effective part of the woven tensile sample. The tests were performed, on the one hand under monotonous tension at different strain rates and on the other hand under sophisticated cyclic loading histories, including relaxation and creep sequences. The analysis of experimental results was made through a visco-elasto-hysteresis model, based on the superimposition of three stress components. The proposed method allows for characterizing the steady state viscous stress as a function of strain and strain rate, the time-independent irreversible behaviour and the instantaneous modulus increasing with the strain. Based on the visco-elasto-hysteresis model, an analysis enabled us to understand and predict the change in relaxation and creep orientations during complex loading histories. (C) 2009 Elsevier Ltd. All rights reserved.

【 授权许可】

Free