Fracture Mechanics Forum

Hi!

My name is Christian and Im having big problems whit geting my cohesive elements to break. I have been stuck for some time now and cant find the right help. Im not experienced whit abaqus so its probably a very simple fault but I cant find it.

I've performed a experiment in fatigue.I need to now perform analysis in ABAQUS and validate the results.

MY QUESTION IS - HOW TO APPLY CYCLIC LOADINGS IN ABAQUS,SAY FOR INSTANCE I'VE RUN 60000 CYCLES AT 10 HZ AT A MAXIMUM-MINIMUM LOAD OF 18 KN - 2KN

Hi
iMechanica,

For my
graduation project I need to model the cracking behavior of a concrete beam in
bending (To simulate delamination of Steel Reinforced Polymer).

However I’m
relative new to FEM, I’m using Abaqus 6.10 (and have 6.11 available).

To get used
to the modeling of cracking behavior I started with a simple example, as described
in:

Alfaro, M.
Suiker, A. (2010) Transverse Failure Behavior of Fibre-epoxy Systems, Journal
of Composite Materials, Vol. 44, No. 12/2010.

I am working on the vibratory simulation of engin cooling system. Now
i want to add the component of rubber isolators , the idea is to add
the spring element ,we have tested the dynamic stiffness during range
of 5-100HZ , i konw that in ANSYS we can use the matrix 27 element to define the dynamic stiffness ,but how can i set the values in abaqus or inp files.

Thanks for your helps!

Hi all,

Anyone knows if the concrete smeared cracking model in ABAQUS can model the strain softening behaviour of concrete i.e the descending bramch of the stress-strain curve in the post ultimate stress.

Thanks

Hussam 

Hi all,

Do you know what is the difference between Creep rate and creep strain rate?

Thanks beforehand...

 Hey everyone,

I have been trying to model the penetration of a thin metal plate by a flat cylindrical bullet in ABAQUS. The plate has been treated as a membrane, and I am using Johnson-Cook's damage model in conjunction with Johnson-Cook hardening. The bullet is deforming the plate and travelling to the opposite side of the plate. But the dent is becoming infinitely long, but not showing any signs of ductile failure. What could have probably gone worng?

Dear all,

Does any one have experiences in stationary cracks analysis or some experimental data on this topic?

please help me

Thanks

Dear all,

Does any one have experiences in stationary cracks analysis or some experimental data on this topic?

please help me

Thanks