I want to model progressive impact damage in laminated composite, I see in papers, they usually use VUMAT subroutine, but there are other subroutines to model damage. Is there anyone who knows this problem? And is there any other way to model progressive damage?
First, UDMGINI (as all subroutines starting with "U" instead of "VU") is for Abaqus Standard, the other are for explicit.
VUSDFLF is used to define a user-defined field variable, but it can be used wit standard material models. For instance, you could use it to define a time-dependent Young's modulus (using dependencies on the Elastic-card) or any other field dependence of material properties where the property itself can be defined with standard equations and material models (elasticity, plasticity etc.).
VUMAT is used if you want to define a material behaviour (basically the dependence between stress and strain) that is not covered by standard Abaqus options.
Abaqus provides many damage models already, see the material part of the manual (there is a chapter on damage in fibre-reinforced composites that should cover this).
First, UDMGINI (as all subroutines starting with "U" instead of "VU") is for Abaqus Standard, the other are for explicit.
VUSDFLF is used to define a user-defined field variable, but it can be used wit standard material models. For instance, you could use it to define a time-dependent Young's modulus (using dependencies on the Elastic-card) or any other field dependence of material properties where the property itself can be defined with standard equations and material models (elasticity, plasticity etc.).
VUMAT is used if you want to define a material behaviour (basically the dependence between stress and strain) that is not covered by standard Abaqus options.
Abaqus provides many damage models already, see the material part of the manual (there is a chapter on damage in fibre-reinforced composites that should cover this).
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