Rate Sensitive Continuum Damage Models and Mesh Dependence in Finite Element Analyses
Joint Authors
Ljustina, Goran
Fagerström, Martin
Larsson, Ragnar
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-11-03
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The experiences from orthogonal machining simulations show that the Johnson-Cook (JC) dynamic failure model exhibits significant element size dependence.
Such mesh dependence is a direct consequence of the utilization of local damage models.
The current contribution is an investigation of the extent of the possible pathological mesh dependence.
A comparison of the resulting JC model behavior combined with two types of damage evolution is considered.
The first damage model is the JC dynamic failure model, where the development of the “damage” does not affect the response until the critical state is reached.
The second one is a continuum damage model, where the damage variable is affecting the material response continuously during the deformation.
Both the plasticity and the damage models are rate dependent, and the damage evolutions for both models are defined as a postprocessing of the effective stress response.
The investigation is conducted for a series of 2D shear tests utilizing different FE representations of the plane strain plate with pearlite material properties.
The results show for both damage models, using realistic pearlite material parameters, that similar extent of the mesh dependence is obtained and that the possible viscous regularization effects are absent in the current investigation.
American Psychological Association (APA)
Ljustina, Goran& Fagerström, Martin& Larsson, Ragnar. 2014. Rate Sensitive Continuum Damage Models and Mesh Dependence in Finite Element Analyses. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1048947
Modern Language Association (MLA)
Ljustina, Goran…[et al.]. Rate Sensitive Continuum Damage Models and Mesh Dependence in Finite Element Analyses. The Scientific World Journal No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1048947
American Medical Association (AMA)
Ljustina, Goran& Fagerström, Martin& Larsson, Ragnar. Rate Sensitive Continuum Damage Models and Mesh Dependence in Finite Element Analyses. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1048947
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1048947