immediate erosion of the element (MAT_54)
Mojtaba Hassan Vand
I am running a one-element modelling for improving material properties. However, the model is immediately deleted. I checked my model, but I could not see the reason. I attached the keyword for the modelling.
Could someone find the main problem with my code?
Regards
Mojtaba
l...@schwer.net
I suggest you change the value of TFAIL in your MAT054 parameter list to a negative value to prevent element deletion. Then assess why your element fails at the initial time step, even with the loading removed. --len
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James Kennedy
Dear Mojtaba,
See if these are of some help:
Simple one element bending comparison study of *MAT_002, *MAT_022, *MAT_054, *MAT_055, *MAT_058, and *MAT_059.
http://ftp.lstc.com/anonymous/outgoing/jday/composites/allin1_ortho_bend.54.k
Research was completed to characterize the root behavior of the LS-DYNA *MAT_054 composite orthotropic material model. This primarily involved investigating the constitutive relations, ply failure (damage onset), ply deletion, damage factors, and element deletion:
Osborne, M., "Single-Element Characterization of the LS-DYNA MAT54 Material Model", Master's Thesis, Department of Aeronautics and Astronautics, University of Washington, Seattle, Washington, 2012.
The basic behavior of a progressive failure model that simulates laminated composite materials was investigated. To evaluate the fundamental elastic, failure initiation, and post-failure behaviors of *MAT_054, as well as the suitability of *MAT_054 to model fabric composite material systems, a series of single-element simulations was performed. The simulation used a carbon fiber/epoxy material system with various lay-ups, including UD tape and plain-woven fabric variants:
Wade, B., Feraboli, P., Osborne, M., and Rassaian, M., "Simulating Laminated Composite Materials Using LS-DYNA Material Model MAT54: Single-Element Investigation", DOT/FAA/TC-14/19, U.S. Department of Transportation, Federal Aviation Administration, William J. Hughes Technical Center, Atlantic City International Airport, New Jersey, February, 2015.
http://www.tc.faa.gov/its/worldpac/techrpt/tc14-19.pdf
Sincerely,
James M. Kennedy
KBS2 Inc.
October 30. 2023
From: ls-d...@googlegroups.com [mailto:ls-d...@googlegroups.com]
On Behalf Of Mojtaba Hassan Vand
Sent: Monday, October 30, 2023 9:54 AM
To: LS-DYNA2 <ls-d...@googlegroups.com>
Subject: [LS-DYNA2] immediate erosion of the element (MAT_54)
hello
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