failure for hyperelastic material
failure for hyperelastic material
(OP)
Dear all,
I am modeling something using hyperelastic material model. Could someone tell me how to define the material failure? I looked up in "failure tensile; shear failure" etc., but they only apply for either plastic or elatic. Does abaqus support material failure model for the hyperelatic materials?
Thanks all.
I am modeling something using hyperelastic material model. Could someone tell me how to define the material failure? I looked up in "failure tensile; shear failure" etc., but they only apply for either plastic or elatic. Does abaqus support material failure model for the hyperelatic materials?
Thanks all.





RE: failure for hyperelastic material
Failure in hyperelastic testing is pretty straightforward:
In uniaxial (simple) tension, it is the breaking of the specimen.
In pure shear (planar tension), it often is also the breaking of the specimen, HOWEVER, the specimen will typically break at the grips. An additional problem is that, once the width:height ratio of the test specimen is no longer greater than 10:1, it's not really pure shear anymore, so, in a way, the test 'should' end when we're no longer measuring pure shear.
In equal biaxial extension, failure cannot be measured (since the highest stresses are in the tabs, not in the effective gage area)
In simple compression, there really is no such thing as failure; you compress the material as hard as you can, until you / your test frame / your load cell runs out of force.
OK, so that's a little more difficult than I made it sound in the first line of my post... I guess I haven't really heard of elastomers being used for destructive applications, so failure isn't an issue nearly as often as it is for plastics or metals etc.
Hope I helped, sorry if not...
Ron
RE: failure for hyperelastic material
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RE: failure for hyperelastic material
Thanks, but the link doesn't work??
RE: failure for hyperelastic material