I've modeled a composite sandwitch with ANSYS with a pressure. The element chosen was SHELL181.
I want to know the Stresses in the x, y and xy directions; the displacements and the deformations only in a few points so as to compare with the Navier and Rayleigh-Ritz solutions made following Reddy's book.
1.-The first problem is that I don't know how to ask ANSYS to list the displacements and deformations.
2.-The second one is that I know how to ask ANSYS to list all the elements in a layer,
modelling and simulation of spring damper system in ansys ls dyna in drop test form plz guyss help me out with this if any 1 can ................. regards
hi how r u im doing a project based on landing gear struts system . i want to replace hydralic landing gear system by spring damper system in ls dyna . plz guys i need urgent help i m short ov time plzzz help me out
Last year when I started implementing interface elements to model material failure, I realized that the formulation is easy except how to generate a mesh with interface elements. I did a googling to search for such a free program. Amazingly, I did not find any although there are many researchers working on the fracture mechanics field.
So, I wrote a small object-oriented C++ program which reads a FE mesh, duplicates nodes and insert interface elements where asked. The program is able to
(1) insert 1D/2D interface elements everywhere in a FE mesh
(2) insert i1D/2D nterface elements along material interfaces, useful for delamination analysis or interface debonding
Has anyone ever used a vumat subroutine with Eulerian elements? it seems that the stress update formulation is different from the way it is in Lagrangian approach! If you have any experience in this regard I'd highly appreciate if you share it with me.
hello i am in my first contact with abaqus i worked with plaxis but i want to model a pile in cyclic load i think that abaqus is more complete than plaxis but can any body show me how to start using abaqus in geotechnical problem
i need to know how Couple field analyses i.e (Electrical-thermal-strucutral) to be done or can be done in Abaqus 6.10
I am trying to model a beam element (which is supposed to work as a pile) embedded into a 3D block solid of soil.
the beam element (pile) is supposed to have 2 interfacial interactions; 1) tangential and normal contact at the end of beam element , 2) tangential and normal contact on the beam circumference.
could anyone explain how to define this type of interaction?
I really appreciate that.
I would like to combine Extended Finite Element Method (XFEM) with cohesive behavior in Abaqus to model bulk damage as well as interlaminar damage in a material.
Section 10.6.1 of the Abaqus 6.9 Analysis Users Manual says that XFEM "can be simultaneously used with the surface-based cohesive behavior approach or the Virtual Crack Closure Technique, which are best suited for modeling interfacial delamination."
Does anyone know if XFEM can be combined with element-based cohesive behavior?
Hi, i need help modeling sandwich structure in ANSYS 12.1, i have found some materials online on how to do it? I have tried the basic steps. got some results, but now how do i validate that. I have experimental data for three point bending. But i want to make sure that what i am doing in ANSYS APDL is darn right. inputs are, 3 layers 45/0/45 thickness 0.1/0.365748/0.1 (inch)
Hi, i need help modeling sandwich structure in ANSYS 12.1, i have found some materials online on how to do it? I have tried the basic steps. got some results, but now how do i validate that. I have experimental data for three point bending. But i want to make sure that what i am doing in ANSYS APDL is darn right.
3 layers 45/0/45
thickness 0.1/0.365748/0.1 (inch)
We would like to offer you step by step Video Tutorials of IOSO Optimization coupled with Concepts NREC and NUMECA software:
1) http://vimeo.com/16668245 by this we show how easily you can use direct integration capabilities between IOSO and Concepts NREC software to solve optimization tasks in turbomachinery
2) http://vimeo.com/16805244 here we consider IOSO – NUMECA coupled solution on the example of an optimization case study for turbomachinery
I have an idea: In abaqus, I want to simulate crack propagation by XFEM, and meanwhile I also want to define the stress update algorithm by writing a UMAT.
Anybody wants to share related experiences?
I am new to abaqus scripting. I need some help with accessing the odb for history output.
I have a list of odbs and i need to take the displacement and contact stresses information at the end of the step.
The syntax i tried was
fileName = 'static_open_c1.odb'
stepName = 'Load'
historyRegionName = 'Node HS-1.701'
historyOutputName = 'U2'
But i am not able to get any response from it.
I kindly request someone to shed some light on my issue.
I'm trying to investigate the effect of multiple support excitation (spatially varying ground motion) on seismic response of an arch dam using ADINA, so i need to apply different acceleration (and velocity and displacement) time histories on every node on structure-foundation interface.
is it possible in ADINA?
is ADINA capable of multiple support excitation analysis? if not, i have to develop a subroutine to evaluate quasi-static response and multiple support excitation dynamic response and sum them up. how can subroutines be added on ADINA?
I've to model a gearbox in the transitory (acceleration) and in the
stationary (constant speed) running: i'm not sure abut the kind of step
I'm gonna find contact pressure and stress in both case.
What about using static step for both?
I want to know if it is possible to accomplish crack analysis in concrete by using co_axial rotating smeared crack model in Abaqus?
I need some help with MIMICS software please. I have a CT scan images for the whole body and i need to create 3D object for the shoulder model to each part Humerus and Scapula and then perform some measurments then Export it to ABAQUS. Does any one have any idea. Please help.
My email is: firstname.lastname@example.org
Thank you with my regards
I'm working on a linking project between two software: Forge2008 and Abaqus.My goal is to transfert output datas ( nodes,elements, stress tensor) from one software as input datas for the next one.
In order to realise this task I have to understand the output format .unv of Forge 2008 (Universal I-deas format) and convert this file to .inp ( Abaqus)
And use the subroutine Sigini in Abaqus to put initial conditions.
So to sum up do you have informations about .unv file (description of elements)
and an example or a tutorial for how to use Sigini ( subroutine Abaqus)
I would like to know whether there's any method to submit a
number of Abaqus implicit jobs at once (like letting it to run whole
night without any attention)? Also is there any way to run those jobs
without opening Abaqus CAE (like in the command prompt) in a computer
with Windows vista? I have modeled everything in CAE.
I have a plate model in ANSYS.
How can I apply a certain rotation on a line or on a surface in ANSYS ?
I am trying to model a composite material with different tension and compression modulus (elastic analysis). Does anyone know how to do it ??
Thanks for help.
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.