TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Numerical Modelling of Damage and Failure of Ductile Materials in Finite Element Analysis
(Modelarea numerică a degradării și ruperii materialelor ductile în analiza cu elemente finite)
Vol LXVII • No. 2/2015
Dan Andrei Şerban*,**, Emanoil Linul*, Cristian Neș*, Liviu Marșavina*
* Department of Strength of Materials, Politehnica University of Timisoara, Bd. M. Viteazu, 1, Timisoara ** Research Institute for Renewable Energy, Politehnica University of Timisoara, Str. G. Musicescu, 138
e-mail: dan.serban@upt.ro

 Keywords   finite element analysis, damage, failure.

 Abstract
This work presents the main numerical models used in the simulation of damage and failure of ductile materials that are implemented in commercial software packages: equivalent strains criterion, shear criterion and the FLD criterion. Several numerical simulations were performed for impact loadings using one of the above mentioned degradation criteria as well as all criteria, in order to highlight the interaction between the models.

 Rezumat
În această lucrare sunt expuse principalele modele numerice folosite la simularea degradării și ruperii materialelor ductile, implementate în unele pachete software de simulare cu elemente finite: criteriul deformațiilor echivalente, criteriul deformațiilor tangențiale, criteriul FLD și MSFLD. Au fost efectuate simulări pentru o solicitare dinamică folosind câte unul din criteriile prezentate precum și un model cu toate criteriile, observându-se efectul fiecărui criteriu asupra modulul de cedare al piesei.



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