Instabilities in membrane tension: Parametric study for large strain thermoplasticity

• Autorzy: Mucha M. , Wcisło B. , Pamin J. , Kowalczyk-Gajewska K.

Identyfikatory

DOI

10.1016/j.acme.2018.01.008

• Języki publikacji: EN

Abstrakty

EN

This paper deals with the numerical analysis of localized deformation for a rectangular plate in membrane tension, modelled with large strain thermoplasticity. The aim is to determine the influence of selected factors on the localization phenomena, which can result from geometrical, material, and thermal softening. Two types of boundary conditions are considered: plane stress and plane strain, as well as two yield functions, Huber–Mises–Hencky and Burzyński–Drucker–Prager, with selected values of friction angle. First, isothermal conditions are considered and next, a conductive case with thermal softening is studied. Moreover, three types of plastic behaviour are analysed: strain hardening (with different values of hardening modulus), ideal plasticity, and strain softening. Numerical tests, performed using AceGen/FEM packages, are carried out for the rectangular plate under tension with an imperfection, using three finite element discretizations. The results for plane strain in the isothermal model show that with the decrease of linear hardening modulus, we can observe stronger mesh sensitivity, while for plane stress, mesh sensitivity is visible for all cases. Furthermore, for the thermomechanical model the results also depend on the mesh density due to insufficient heat conduction regularization.

Słowa kluczowe

EN

thermoplasticity; large strains; strain localization; parametric study

PL

termoplastyczność; naprężenia; naprężenie płaskie

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2018
• Tom: Vol. 18, no. 4
• Strony: 1055--1067
• Opis fizyczny: Bibliogr. 29 poz., rys., tab., wykr.

Twórcy

autor

Mucha M.

• Institute for Computational Civil Engineering, Cracow University of Technology, Cracow, Poland

autor

Wcisło B.

• Institute for Computational Civil Engineering, Cracow University of Technology, Cracow, Poland

autor

Pamin J.

• Institute for Computational Civil Engineering, Cracow University of Technology, Cracow, Poland

autor

Kowalczyk-Gajewska K.

• Institute of Fundamental Technological Research, Polish Academy of Science, Warsaw, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019)