Affiliation:
1. University of Sidi Bel Abbes
2. University of Mascara
Abstract
In the process of forming solid materials, the plastic instability phenomena often control the appearance and performance of the finished product. The study of these phenomena is therefore of great scientific and technological importance. Polymers materials, for example, polyvinyl chloride (PVC) are frequently used in the plastic pipes in pressure vessels and pipelines, which require details that are more serious, it is therefore essential to understand the mechanisms of plastic instability in polymers in order to know how to control them. In order to determine the plastic behaviour of PVC, the true stress-strain response under large plastic deformation was investigated in different stress triaxiality frameworks. A particular attention was given on the volumetric strain evolution and the damage. The effect of stress triaxiality on the fracture strain was also examined. In the second part of this paper, an elasto-viscoplastic behaviour model is presented, with non associated plasticity, damage and coalescence, which represents the observed behaviours of a PVC material under different triaxialities and for three initial void shapes
Publisher
Trans Tech Publications, Ltd.
Reference20 articles.
1. Benzerga. A J. Besson, et A. Pineau. (1999) Coalescence-controlled anisotropic ductile fracture. J. Eng. Mater. Techno., 12, 221-229.
2. Bai and al (2008). Effect of loading history on necking and fracture. PhD thesis, Massachusetts Institute of Technology, Cambridge, MA.
3. Coulomb CA (1776) on an application of the rules maxim's and minims has some problems of static, relating to the architecture. Acad Sci Paris Mem Math Phys 7:343-382.
4. Drucker, D.C., Prager, W., 1952. Soil mechanics and Plastic analysis or limit design. Quarterly of applied Mathematics 10, 157-165.
5. Dunand, M., Mohr, D., (2012). Experiments and modeling of anisotropic aluminum extrusions under multi-axial loading – Part II: Ductile fracture. International Journal of Plasticity 32–33.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献