ABAQUS
How to update solution-dependat variable (SVARS) during iterations
Submitted by haghighat on Thu, 2012-02-09 01:07.Hello everyone,
I am implementing a uel user subroutine in ABAQUS. This uel is for modeling contact in X-FEM framework. Thus, it's a nonlinear problem and I need to store some solution dependent variables during each iteration. I know I can store SDVs in SVARS. But this vector will update at the end of each step, and not during iterations. Anybody knows about this problem?
I really appreciate if anybody can help me with this.
Thanks
Ehsan
- haghighat's blog
- Login or register to post comments
- 90 reads
Meshing difficulty in viscoelastic constrained layer damping
Submitted by KolluruK on Wed, 2012-02-08 14:21.Hi,
I am simulating constrained layer damping with viscoelastic layer in Abaqus.
Used 3D continuum element - C3D20R for base an face sheet and and same with hybrid
formulation C3D20RH for visco tape.
In FE mesh, I tied the nodes (through tie constraint) of base with that of visco tape and
also the visco tape with that of face sheet. But in the deformed mode shape, I am finding
the visco tape fully penetrated inside the casing (I guess as there is no contact, only tie
ABAQUS Explicit - defining boundary conditions and imposed displacement on rigid bodies
Submitted by pirs on Mon, 2012-01-30 18:46.Hello there,
I am currently trying to model a cold-formed steel beam experiment, where load is applied through displacement control. I thought using ABAQUS/Explicit and perform a quasi-static analysis would be a good idea.
However, I have found an error I have not yet been able to overcome, and the results are not as I expected.
Here's the warning message:
- 2 comments
- Read more
- 336 reads
2012 SIMULIA Community Conference - International Gathering of Simulation Experts
Submitted by matt.ladzinski on Tue, 2012-01-24 13:37.2012 SIMULIA Community Conference
May 15-17, 2012 – Providence, Rhode Island
Join our international gathering of simulation experts
- matt.ladzinski's blog
- Login or register to post comments
- Read more
- 332 reads
how to calcualte total reaction force in a plane in ABAQUS
Submitted by duping812 on Fri, 2012-01-20 20:27.Dear all,
This is my first post in iMechanica forum.
I am trying to some simulation of cantilever beam bending in abaqus. Since the aspect ratio is pretty low (height/diameter~=2), I use 3D solid element instead of 2D beam element to construct the beam. I set the deflection at the free-end as the boundary condition, and try to solve the reaction force (perpendicular to the beam longitudinal axis). But I get in trouble to calculate the total reaction force at the free-end.
I know abaqus can do some operations on existing output data. I tried to sum the reaction forces of all nodes in the free-end plane, but the result did not agree with the Timoshenko beam equation.
If anyone can give some suggestions, that would be great.
- 2 comments
- Read more
- 401 reads
Section assignments for large assemblies in ABAQUS CAE
Submitted by jstello on Thu, 2012-01-19 18:24.I am getting started with ABAQUS, and so far, I have had to assign a section property to every part of the assembly, which takes a long time for large assemblies. Often the entire assembly has the same section assignment. Is there a way to assign the same section to various instances?
I thank you all in advance.
defining points in 3d, changing coordinates system ABAQUS script
Submitted by hermatician on Wed, 2012-01-18 15:31.hey guys please help me,
i need to define my revolution points i.e. the circle by x.y.z. coordinates and i dont know how to do that.
if that is not possible please tell me how can i change the system to cyclindrical coordinates please.
i
have to draw a spring and for that i know the points in cylindrical
system. i cant define in 2d as for less than 90 degree it will not be in
xz or you know like that plane. it will also be helful to define plane
if i can.
like how it chooses f1[1] sketch plane and all, and can i change that by changing coordinates how please help.
- hermatician's blog
- Login or register to post comments
- Read more
- 168 reads
simulation of penetration of hollow cylinder in soil
Submitted by Geotech2011 on Sun, 2012-01-08 22:10.- 3 comments
- Read more
- 711 reads
output of abaqus
Submitted by yaoyaoyubin on Thu, 2012-01-05 04:48.In the output of abaqus, why there are more than one stress values at the same time?
Thank you so much.
- yaoyaoyubin's blog
- 2 comments
- 292 reads
transverse compressibility in Abaqus SC8R elements
Submitted by Echeban on Wed, 2011-12-28 23:21.Does anyone know if Abaqus SC8R elements have transverse compressibility \epsilon_z?
What properties shoud I specify for SC8R elements, type: lamina, or type: Engineering Constants ? (note that type lamina do not have transverse modulus E3)
- Echeban's blog
- Login or register to post comments
- 323 reads
Plywood box under pressure on ABAqus
Submitted by Manaliac on Wed, 2011-12-28 12:44.
Hello everyone,
I am working right now on a plywood box simply supported by wedges under a uniform pressure of 1 MPa.
The pressure is applicated through a rigid shell part layed on the top of the box ( a surface to surface contact). The bottom of the box is on contact (surface to surface) with the rigid shell wedges (2 on the corner of the box and 1 on the middle).
As a boundary condition, all the DOF's of the wedges are constrained.
Firslty the Plywood box is squeezed under the pressure until she began to bounce back like a spring and separate from the wedges and flying somewhere!!
- Manaliac's blog
- Login or register to post comments
- Read more
- 258 reads
Drucker Prager model for Silicon dioxide powder in ABAQUS
Submitted by Hui.Chen on Thu, 2011-12-22 14:47.Hallo, everyone,
I am PhD student in material processing. I have a project of using silicon dioxide powder as forming media for tube hydroforming process. I read some literatures about the material model of granular materials. It seems that the Cap model in ABAQUS should be suitable for prescribing the material behavior in FE model. But it is not easy to do the triaxial test for silicon dioxide powder.
Since the deformation of the powders should be elastic, and the pressure applying to the powder is approximately 50MPa, is it suitable to use Drucker Prager model instead of Cap model for the powders? Accuturally, it is ideal that if the deformation of the powders is elastic, while we can use the powders circularly.
Minimum length scale in ABAQUS
Submitted by rakesh.srivastav on Thu, 2011-12-08 23:50.Dear all,
This might be a simple question. What is the smallest length scale that can be simulated in ABAQUS. I am trying to run some continuum estimates for particles with dimensions in the nanometer range (10 to 50 nm). Is it possible to specify such length scales in ABAQUS?
Thanks for your insights.
How to get inside the ABAQUS incremental/nonlinear static solver
Submitted by mkajtaz on Wed, 2011-12-07 00:03.Hi guys,
I'm working on an ABAQUS extension/plug-in of a sort and I'd like to replicate results for a single 4-node plane stress element produced by the ABAQUS incremental/nonlinear static solver.
I assumed the relationship is:
ABAQUS/ Explicit help
Submitted by Peter M on Tue, 2011-12-06 21:16.Hi,
I'm trying to simulate wave propagation in composite materials using ABAQUS/Explicit but can't run the simulation (when creating and using a isotropic material it works), would be realy grateful for som tips how to solve it.
- Peter M's blog
- Login or register to post comments
- 413 reads
Abaqus- non uniform pressure load in 2D
Submitted by quickstart on Tue, 2011-12-06 04:11.Hi all,
I am new to Abaqus and I found the problem I unexpectedly cannot solve.... My case is quite simple- I have 2D frame, part of which is under nonuniform pressure distribution (described by linear function). When I create analytical field referring to previously created local CSYS, apply a load in 'static general' with distribution determined in analytical field and try to run a job, i have a message:
How to extract the normal and shear stress between two surfaces which are bonded through TIE option?
Submitted by Yu Bo on Sat, 2011-11-26 05:28.Is there such an output manager option in CAE or other effeorts are needed?
Thanks in advance!
- 1 comment
- 800 reads
Operate with XYdata in Abaqus
Submitted by matteo.tavano on Fri, 2011-11-18 15:16.If I want the sum of all the y-values of an XYdata in Abaqus how can I do?
PhDs and Post-doctorate Research Positions in Shape Memory Alloys
Submitted by binod on Thu, 2011-11-10 22:01.
There
are several immediate openings of research-oriented Phds and Post-Doc positions, in the
department of civil engineering, the University of Akron (UA). Please see tha attached file for datails.
- binod's blog
- Login or register to post comments
- 1317 reads
Report generation in Abaqus with Mode shapes
Submitted by KolluruK on Wed, 2011-11-09 17:20.Hi,
I am performing natural frequency analysis on a cylindrical structure in Abaqus. I am extracting about 80 modes (considering the presence of symmetrical modes). I want to generate a report with all the mode shape patterns and corresponding frequencies listed. Is there any way to do this automatically? Taking Prnt Scrn and generating word document is consuming lot of time and also I have multiple model combinations to do such analysis.
TEMPERATURE PREDICTION IN A ROLLING TIRE
Submitted by ujjwal on Wed, 2011-11-09 06:18.hi all,
i intend to do a project on temperaure prediction of a steady state rolling tyre due to hysteresis. i want to use abaqus as my solver.
please guide me,from where i have to start?
REGARDS
- ujjwal's blog
- Login or register to post comments
- 404 reads
Modal steady state and transient Analysis in ABAQUS
Submitted by jordan2 on Wed, 2011-11-02 11:54.Normal
0
false
false
false
EN-GB
ZH-CN
X-NONE
Call for Papers Open – 2012 SIMULIA Customer Conference
Submitted by matt.ladzinski on Wed, 2011-10-26 13:21.Join us in Providence, RI, May 15-17, 2012, and share your success story!Abstracts for papers are due November 7, 2011.All users of SIMULIA products including Abaqus FEA, Multiphysics, Isight and Simulation Lifecycle Management (SLM) are invited to submit an abstract.
- matt.ladzinski's blog
- Login or register to post comments
- Read more
- 829 reads
change material properties using Field variables in Abaqus
Submitted by mmalekan on Sat, 2011-10-22 09:16.Hi Everyone,
""""
I was apply Field Variables to change material properties in simulation, but I got this error:
in keyword *FIELD, file "Job-2-Copy.inp", line 5575: Unknown assembly node set _Pickedset2
in keyword *FIELD, file "Job-2-Copy.inp", line 5612: Unknown assembly node set _Pickedset2
in keyword *FIELD, file "Job-2-Copy.inp", line 5643: Unknown assembly node set _Pickedset2
in keyword *FIELD, file "Job-2-Copy.inp", line 5674: Unknown assembly node set _Pickedset2
- mmalekan's blog
- Login or register to post comments
- Read more
- 714 reads
weird error in Abaqus
Submitted by Gyanender Singh on Fri, 2011-10-14 20:10.Hi,
I am encountering a weird error in ABAQUS analysis. Their is no information in the files about why this error occurs, the execution just terminates all of a sudden. Following is the error:
- Gyanender Singh's blog
- 1 comment
- Read more
- 697 reads





Recent comments
1 hour 31 min ago
2 hours 3 min ago
3 hours 34 min ago
5 hours 56 min ago
15 hours 48 min ago
22 hours 11 min ago
22 hours 51 min ago
1 day 20 min ago
1 day 1 hour ago
1 day 2 hours ago