We tried to simulate simple shear using ABAQUS and compared it with the analytical solution. To our surprise, even though the equivalent stress and strain matched perfectly, the component stress and strain had a large deviation between the semi analytical and ABAQUS methods. The zero components in the analytical model were calculated to be non-zero in the results of ABAQUS. This paradox could not be understood clearly as whether it is a case of software deficiency or conceptual error. A COMPLETE ANALYSIS OF THE PROBLEM IS ATTACHED AS A REPORT.
I have asked for technique support. Their answer was that my strain rate was incorrect for finite deformation. But I do not think so.
Could you have any thoughts? Thanks.
I will model laminated composite and it have contact element at between layers. Can anybody help me for define of contact element(ANSYS) at between layers?
I have saved the global stiffness matrix generated by ADINA. the format of data stored is like below:
I have a problem with applying periodic boundary condition. I have used *EQUATION in constraints for opposite nodes and surfaces. But I still have some problem with that for sure I making some simple mistake. If anyone could look at my model and find problem. Abaqus version 6.9-1 .
Thanks a lot.
Sigma technology to participate in ansys RDO webinar series
Multilevel Robust Design Optimization IOSO technology coupled with ANSYS CFX will be shown for real-life application
Is there anyone who use LS-DYNA program to simulate shear wall type structure, and what kind of MAT and elements do you think is suitable to simulate the shear wall?
I exercised "Prob37: FSI analysis of a simplified turbine using a sliding mesh" ADINA tutorial. I got an error message and the program stopped solving.
The error message:
ERROR CODE ADF2075
-R option cannot be used for adaptive-mesh or sliding mesh. You can use -m -M options.
What are the -R,-m, -M options? How can i solve this problem?
Mimics 14 comes with a CAD-like functionality, enabling you to design directly on anatomical data.
Herewith I want to announc the release of CONTACT version 10.2.
The main changes with respect to earlier versions of the program are as follows:
All, I am conducting a survey and your response would be very much appreciated. The purpose of the survey is to gather data that will help the developers of open source software improve the success of their projects. All replies received before midnight Sunday 26th September will be entered into a draw for a £30 Amazon gift voucher. Here is a link to the survey: Click here to take survey Thanks for your participation! Lee Margetts
I want to model a plate that connected with stiffening beams in ANSYS.
beams and plates has rigidly connected together, and there were no joints.
for model this, I first make an area and secondly extend this area to make a volume.
then I divide this volume to seperate plate and beams.
this is my question :
what relation exist berween components when they divide from one volume.
I mean suppose we have a volume, then we divide it in to two parts, what relation exist between this two new
is this kind of modeling in ANSYS is appropriate?
I mean make an integrated volume and then divide it in some parts.
Hi all, Currently, I am using ANSYS 12.1 for the fatigue crack propagation simulation for the edge crack & center crack plates. It is a mixed mode crack propagation. Can anybody please tell me or guide me how to write the code in the ANSYS using APDL for automatic remeshing around the cracktip when crack propagates to the new position?
Currently, I am using ANSYS 12.1 for the fatigue crack propagation simulation for the edge crack & center crack plates. It is a mixed mode crack propagation.
Can anybody please tell me or guide me how to write the code in the ANSYS using APDL for automatic remeshing around the cracktip when crack propagates to the new position?
FEM Programming -Adaptive Remeshing Problem Because of Penetration(Figure was attached to illustrate the problem)Submitted by YangTan on Thu, 2010-09-16 02:14.
I'm programming by myself to do the simulation of forming process. I met the problem below.
I used second order triangular elements and h-refinement method in the simulation. When the workpiece(bottom) is remeshed, the new node is inside of the tool(upper). How can i solve the problem?
Any help will be appreciated!
I have written a Fortran code for nonlinear viscoelasticity according to the Hughes' recurrence algorithm based on a total Lagrangian formulation. And a relaxation test is made. There is some deviation from the analytical solution(Theoretically the stress response should be an exponential decay plus a constant, isn't it?). The numerical ultimate stress is larger than the analytical one. As a larger initial strain is applied, the deviation is smaller. For a inital strain of 10%, there is almost no difference between the num. and analy. solution. What can account for this?
i am doing static analysis on a pick and carry crane, i need to find the pin forces. for this i created entity set with the nodes where the forces are to be derived and ran a static analysis in ansys.In order to derive the forces , i first picked the entity set and then applied the nodal loads from the list result options. the result that i got was not fine. it states there was zero forces on the pins, but its not.i need to find the pinforces, so kindly let me know , how to do it.
Hi every one.
i realy need to know how can model and solve LBB condition for a simple example in ANSYS.please help me.
god bless you
I want to simulate a problem with abaqus,but during runing of my project,percent of process not increas for axample when i change mesh sizes to biger runing go up to 50 % and when i change mesh sizes to smaller than the previos size,it occure again but in 25%
is there any one that know about this problem,i'm trying to solve it for 2weeks but i cann't.
I'm waiting for your suggestions...
I need information about ansys rotor dynamics modeling and vibration analysis. please help me in this reserc.
I want learning about crack modeling in abaqus,
is there anyone to give me some example about crack modeling in abaqus?I think working on example is too faster to learn about modeling this type of events.
I'm waiting for your help
i m, arun sahu student of IIT kharagpur.my mtech thesis is effect of dynamic loading on slope stability analysis in open cast mines.i hav startted my work using software ABAQUS.can i give velocity as input in abaqus?
and here i just want to give trapezoidal form of load up to 2 sec.so plz help me in these ...............
I do my thesis on bearing capacity of foundations near slopes, I use mohr coulomb plasticity with el asticity
but I cant understand what should I do and why my result is dependent on the mesh size and why when I refine elements near
foundation the bearing capacity of the foundation becomes smaller please help me how can I do this thesis
Could you tell me how to define inflow and outflow eulerian boundary in ALE? MY ERROR IS "An Eulerian boundary region cannot overlap a sliding boundary region"
Defined in the first interface surface, and then modify the inp file, change to add
REGION TYPE = EULERIAN
*SURFACE, NAME=SURF1, REGION TYPE=SLIDING
*SURFACE, NAME=EULER1, REGION TYPE=EULERIAN
Then, I go on the File/Import/Model...inp.file - when he fined warning
WARNING: The following keywords/parameters are not yet supported by the input file reader:
how can i define frequency domain viscoelastic material & electrorheological in abaqus ?
I just finished extrusion process simulation in ABAQUS with the input of stress-strain data. Now I want to retrive the strain increment of certain element during each deformation increment. Surely one can write straininc to a *.txt file when simulating with VUMAT. But the simulation of extrusion will be extremely slow with VUMAT. So How can I get the strain increment when simulating with the input of stress-strain data?