cohesive elements between rubber and inclusions
cohesive elements between rubber and inclusions
(OP)
Hi,
my problem is the definition of the debonding behaviour with cohesive elements (traction-separation) around an carbon-black inclusion in a rubber material, with ABAQUS v.6.6.
Thers´s no problem with the steps in CAE to define this behaviour, but the calculation stops with:" to many attemps were made for this approach..."
The minimum step size is 1E-09, beginning with a 0.001 step.
Could there be problems with the directions of the cohesive stack? I use sweep path for meshing these cohesive elements, the oriention of these elements are from the middle outwards, around the inclusion.
I´m not a english native speaker, but i hope the problem i have is a little bit clear (nice german-english
?
Regards
my problem is the definition of the debonding behaviour with cohesive elements (traction-separation) around an carbon-black inclusion in a rubber material, with ABAQUS v.6.6.
Thers´s no problem with the steps in CAE to define this behaviour, but the calculation stops with:" to many attemps were made for this approach..."
The minimum step size is 1E-09, beginning with a 0.001 step.
Could there be problems with the directions of the cohesive stack? I use sweep path for meshing these cohesive elements, the oriention of these elements are from the middle outwards, around the inclusion.
I´m not a english native speaker, but i hope the problem i have is a little bit clear (nice german-english
Regards





RE: cohesive elements between rubber and inclusions
One cause might be the softening part of the cohesive-traction law which models failure of the cohesive elements.
Some common rules:
- You should try to limit the maximum time increment to a lower value such that the loading increment is not too big.
- If the displacements are large, turn NLGEOM to ON.