Probabilistic Analysis of the 6061 Aluminium Alloy Tensile Test with Random Initial Microdefects
Ładowanie...
Data
2021
Autorzy
Tytuł czasopisma
ISSN czasopisma
Tytuł tomu
Wydawca
Wydawnictwo Politechniki Łódzkiej
Lodz University of Technology Press
Lodz University of Technology Press
Abstrakt
The main aim of this paper was to investigate an application of the generalized higher order
iterative generalized stochastic perturbation technique in numerical simulation of 6061 aluminum alloy plastic
behavior with structural initial microdefects. Gurson-Tvergaard-Needleman constitutive porous material
model implemented in ABAQUS system has been employed for this purpose with its 2D triangular and
quadrilateral elements. A volume fraction f0 of the initial microdefects naturally appearing in the material has
been adopted as the input random variable having symmetric but not necessary Gaussian distribution.
A verification of its uncertainty influence on statistical scattering of material specimen deformations,
stresses and void volume fractions has been carried out thanks to the common usage of the FEM system
ABAQUS and computer algebra system MAPLE 2019. The 10th order Iterative Stochastic Perturbation
Technique has been compared with Monte Carlo Simulations and Semi-Analytical Method to analyze
uncertainty in extreme stresses and deformations within the tensioned material coupon.
Opis
Słowa kluczowe
porosity, GTN-material model, stochastic finite element method, aluminium alloy, porowatość, model materiału GTN, stochastyczna metoda elementów skończonych, stop aluminium
Cytowanie
Strąkowski M., Kamiński M., Probabilistic Analysis of the 6061 Aluminium Alloy Tensile Test with Random Initial Microdefects. W: XXVII LSCE 2021 : Lightweight Structures in Civil Engineering. Contemporary problems. Book of Abstracts, Szafran J. (Ed.), Kamiński M. (Ed.), Wydawnictwo Politechniki Łódzkiej, Łódź 2021, s. 121-124, ISBN 978-83-66741-15-7.