Blog posts
Problems about the Contact Roller of the 3D FE Model in ADINA
Dear everyone,
Recently I am running a 3D FE model in ADINA to
analyse the elastic-plastic fracture behaviour.
A three-point bending specimen was modeled and the specimen was
supported by a contact roller.
Here is the problem:
In a rather small loading (load line displacement was about 0.1mm),
the program indicated that “the mesh is
too distorted” and stopped running. It also showed “No convergence” and stopped if the small strain formulation was
used.
3d crack modelling and calculation of j integral in ansys 13.0
hello,
i am trying to calculate a j integral values for a 3d crack in ansys.
i tried with a following txt code and as a input file.
the following code actully works for 2d crack for defined paths.what changes should be made to this for getting j-integral values in 3d crack?
Boundary conditions and gradient discontinuity in lower-order gradient plasticity
Amit Acharya, Huang Tang, Sunil Saigal, John L. Bassani, On boundary conditions and plastic strain-gradient discontinuity in lower-order gradient plasticity, Journal of the Mechanics and Physics of Solids, 52 (2004) 1793 – 1826
Output Total Force on a Straight Line
Dear All,
I am using ANSYS 13.0 APDL to simulate a elastic model to calculate stress intensity factor. I got the solution successfully. However, I want to verify the answer with theoretical solution from crack analysis handbook. So I need to output the total force on a straightline.
Jump condition for GND evolution
Acharya, A., Jump conditions for GND evolution as a constraint on slip transmission at grain boundaries, Philosophical Magazine, 87(8-9), 1349-1359, 2007 (see attachment)
Strain Gradient Plasticity
Hi all,
I have a strange question that has puzzled me since last almost one year.
There are many SG-plasticity models in the technical literature, sometimes categorized as lower-order or higher-order models.
The problem is :
the constitutive models include the gradient of plastic parameters (e.g. plastic slip).
How to avoid the penetration in abaqus....
Hi,
I used abaqus 6.10 for analysing the an pressing opertion.
i gave the interation properties and other loading condition.
But, during the analysis, the die is penetrating inside the workpiece.
How can i overcome this.
With regards,
N.Thangapandian
Material model for nanocomposite in high strain rate
Dear All,
I am looking for some paper on material models for polymer nanocomposite
in high strain rate. I will be grateful if someone introduce me some good
paper.
Regards
Azadeh
Solid/Fluid Mechacnics
Hi,
In my research i am trying to develop a new model for plastic deformation, and i suspect there is a strong similarity between
plasticity and turbulent flow !.
My question is: if there is workd done trying to apply Reynolds decomposition (Reynolds Stress) to the governing equations and solved plasticity problem in Solids?
thanks,
Yaron B.S.