Simply we can model hasin damage in Abaqus but that is 2D, gives only the inplane stresses not the perpendicular stress.I know VUMAT subroutine will be required for that, if anyone have some idea how to write code incorporating hasim 3D damage in it then please do share
Hello
a subroutine code for the Hashin criterion is available from
"FINITE ELEMENT ANALYSIS OF CARBON FIBER COMPOSITE RIPPING USING ABAQUS"
A Thesis Presented to the Graduate School of Clemson University
In Partial Fulfillment of the Requirements for the Degree Master of Science Mechanical Engineering
by Joy Pederson
December 2006
Little known are ABAQUS built-in models, see
http://imechanica.org/node/18733
The following might appeal to you:
VUMAT Continuum damage model for fabric reinforced composites
VUMAT Damage and failure in unidirectional fiber composite materials
I quote a posting on ResearchGate by Masoume Aziziyan:
The Hashin damage initiation criteria which implemented in ABAQUS must be used with elements with a plane stress formulation, like( plane stress, shell, continuum shell, and membrane ). when our model is solid...we must use the continuum shell element. for other cases we must write umat and vumat subroutine.
I don't look if there is anything in 3d there.
Good luck
Frank
Dear Akshay,
Composite damage model contains damage initiation and damage evolution. For damage initiation Hashin damage criteria is the popular one. It is developed for 2D and 3D elements and contains different criteria. For example damage initiation in "Damage and failure for fiber-reinforced composites" in Abaqus is 2D and contains four criteria based on Hashin's theory while damage initiation in "MAT_161 and MAT_162" in Ls-Dyna is 3D and contains seven criteria based on Hashin's theory.
Damage initiation just determine the initiation of damage and don't apply damage and material softening without defining damage evolution. In other words, if damage initiation is defined and damage evolution is not defined, composite elements will show elastic behavior with initial elastic properties.Therefore damage and material softening happen just by defining both of them.
For damage evolution, two methods are used including fracture energy based approach (like damage evolution in Abaqus, 2D) and MLT approach (Like MAT_161 and MAT_162 in LS-Dyna, 3D). You could find 3D formulation of fracture energy approach with a simple search.
I propose selecting damage initiation criteria and damage evolution approach, considering load case and available material properties. For example in my research area, ballistic impact simulation of composites containing 3D damage initiation and damage evolution based on MAT_161 and MAT_162 in LS-Dyna, showed good accuracy. Therefore I used this material model with little changes as a VUMAT subroutine to simulate high velocity impact of composite sandwich panels. You could find more information in my work from below link:
Article Numerical modeling of high velocity impact in sandwich panel...
Regards,
M. Khodaei
Hi, Akshay,
I agree with discussions from Meysam Khodaei
I would also suggest you to go through the abaqus manuals (and the attachment here), if you plan to develop a subroutine and require tips. Also, I would recommend studying Puck failure criterion.
All the best.
-Amrit
You can use hashin damage inbuilt model by using continuum shell elements however if you are using brick elements then you have to write separate subroutine file and integrate with abaqus
As Salman Khalid said you can use continuum shell elements. But it should be noted that also continuum shell elements' geometry are 3D, their formulation are 2D like conventional shell elements. Therefore the Hashin damage formulation of continuum shell elements, are not different from conventional shell elements.
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