Questions tagged [abaqus]

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How quadrilateral elements represented in most FEA solvers for structural mechanics problems?

How quadrilateral elements represented in most FEA solvers for structural mechanics problems? I know that Nastran-95 represent quadrilaterals for membrane and bending elements as a set of triangles: ...
Евгений Павлов's user avatar
2 votes
0 answers
145 views

How to join two beams rigidly?

Hi I am making a beam model using Abaqus. There are two beams created. I wanted to join two beams rigidly in the connection to transfer moments between beams. However, I do not know what connector or ...
HSChan's user avatar
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2 votes
0 answers
776 views

How does Abaqus calculate reaction force?

I wrote a UEL for one element and compared to a reference UEL (FEM), where the results agreed satisfactorily, except the reaction force. The stress, strain, strain energy all were pretty accurate. I ...
Schneider's user avatar
2 votes
0 answers
73 views

Abaqus Milling Simulation

I'm creating a simulation in abaqus of a endmill removing material from and aluminium plate. The simulation is almost working, but only the surface level element are being removed from the plate. The ...
Phil Young's user avatar
1 vote
2 answers
64 views

Is there a specific way to simulate porous structures?

I tried to simulate an axial compression test for a lattice (porous) structure but It takes too much time and it doesn't give me the right answer (when I compare with experimental results). So, I was ...
Goli's user avatar
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1 vote
0 answers
46 views

Abaqus vcct fatigue consistently underpredicts disbond growth rate

I'm modelling a fatigue disbond using abaqus. I've understood the disbond growth rate is equal to: $$\dfrac{\partial a}{\partial N} = c_3 \Delta G^{c_4}$$ I've set up an analysis with MMB specimen. I'...
Nathan's user avatar
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1 vote
0 answers
504 views

Abaqus XFEM crack propagation

I'm trying to run a simulation about crack progation using XFEM. In particular, I have a 2D case where I'm representing a composite material composed of matrix plus a single fiber. I would like to ...
federico's user avatar
1 vote
0 answers
58 views

How do I define properties orientation in a 2D short random fibers composite? ABAQUS

I generated different 2D microstructures with different fibers volumetric fraction (basically a square representing the matrix and a lot of small rectangles inside, with different measures and random ...
Federico De Bianchi's user avatar
1 vote
1 answer
172 views

How to repeat on ABAQUS FEM simulations without reloading the mesh?

I would like to perform several FEM simulations on a given mesh with ABAQUS, where only the orientation of an element set would change in between. Currently, I'm just generating several inp files (...
Rémy Martin's user avatar
1 vote
0 answers
123 views

Extracting load info on Abaqus with Python

I have a model on Abaqus that I've managed to run some 85 jobs on manually. Between jobs, only the loads vary, and I select these loads by resuming what I need and suppressing what I don't with my ...
jv7's user avatar
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1 vote
0 answers
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How to run a steady state dynamics, Modal step based optimisation using TOSCA?

What design responses must be given in the TOSCA gui. I chose volume reduction as an objective function with the constraints of displacement. Is this approach correct?
Kartik Kanugo's user avatar
1 vote
1 answer
871 views

Meshing Complex models in abaqus

I'm trying to mesh a model of a morphing wing in Abaqus and have been running into issues. It was recommended that I partition the model into smaller parts, but it seems that the more I try to ...
Tanner's user avatar
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1 vote
0 answers
178 views

Modeling Rotation and Translation of surface B.C. in Abaqus

I am trying to model a test which has grips that can translate in X and Y directions, as well as rotate. I have been trying to model this using constraints and a reference point but have not been able ...
user17189's user avatar
1 vote
0 answers
87 views

Abaqus Import Analysis

I want to import initial state of a model using predefined fields in import analysis and change the general stiffness matrix and continue simulation. But by default model get the section(material) ...
Chamith Deeman's user avatar
1 vote
0 answers
444 views

If I want to run an abaqus job (in Linux redhat) with user subroutine on parallel processors, how do I do that?

I work in Abaqus 2017 a lot. I have noticed that when I submit any abaqus job (that does not contain any subroutine!) via parallel processing (aka cpus=4 or 8), it runs just fine! But, when i submit ...
MousumiG's user avatar
1 vote
0 answers
33 views

How does one activate viscosity change, in gap flow, as the dependency (field variable) is specified at a particular node in Abaqus Standard?

I have a question regarding fluid flow and the change in viscosity of the fluid flow as the field parameter changes from one step to another. I am modelling fluid flow, followed by fluid and ...
MousumiG's user avatar
1 vote
0 answers
597 views

How to convert solid part to shell part in Abaqus?

I want to compare the same model with solid shape and shell shape, since my model is big, I am wondering if there is a way to convert the solid part into a shell in Abaqus easily without creating a ...
Cindy.Karina9's user avatar
1 vote
0 answers
136 views

Entering frequency dependent elastomer properties in abaqus

I am trying to enter frequency dependent viscoelastic properties for an elastomer into abaqus. I found where to enter the properties: Edit Material->Mechanical->Elasticity->Viscoelastic Domain: ...
Cory Smith's user avatar
1 vote
0 answers
48 views

How to find all the parameters in weight vector in Levenberg-Marquardt Algorithm?

I already had a data for corroded thickness distribution (in matrix form) for corroded surface model in Abaqus with mesh size 5 cm I want to create thickness distribution with bigger mesh size (e.g 50 ...
Cindy.Karina9's user avatar
1 vote
0 answers
2k views

Creating a custom field output in ABAQUS

I want to create a custom field output in ABAQUS. For the purpose of proof on concept, I want to display the maximum shear stress as calculated from the Mohrs circle, as discussed here for a 2D shell. ...
User2341's user avatar
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25 views

Simulating the Impact of Bicycling on Hip Joint Cartilage

Sorry if this question comes off as obvious. I have more of a biology/clinical research background, and I have almost 0 experience with FEA. I have 50 sequential data points of the hip joint angles of ...
Omnitragedy's user avatar
0 votes
0 answers
13 views

Clarification on the location of stress and strain output value in Abaqus

Today, I had a discussion with my teacher about the location of stress and strain output in Abaqus. I believe that Abaqus outputs stress and strain based on Gauss integration points. However, my ...
yuxuan's user avatar
  • 149
0 votes
0 answers
10 views

How can I input the equation below in Abaqus (Operate on XY Data) with certain condition? Where fi=5+5i and frequency range is between 300-950; S=189

Where fi=5+5i and frequency range is between 300-950; S=189.
李晓兰's user avatar
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0 answers
11 views

Mode shape directionality in Abaqus finite element analysis

For a coupled aero-structural analysis I'm working on, I have to extract the eigenvectors/mode shapes of my structure, so that I can run aerodynamic calculations on them. I have a parameter (in this ...
dboston's user avatar
0 votes
0 answers
40 views

Interaction property is not available in an ABAQUS/Explicit Analysis. The input file was not generated, and the job was not submitted for analysis?

I have created Surface to Node contact interaction, thereafter I am getting the above error when I am submitting the file for the job.
Joel Junias's user avatar
0 votes
1 answer
39 views

Converting data from Chaboche material model from ABAQUS to ANSYS

How to minimize differences when using Chaboche model in ABAQUS and in ANSYS. For example as I've noticed – in ABAQUS one has rate-dependent plasticity model, but in ANSYS it is rate independent ...
Rejnold's user avatar
0 votes
0 answers
23 views

Wanting to solve an abaqus step many times with different material properties

I'm going to ask this question, and I am not even sure that what I have in my head is possible. I have a model with 5 part instances. To understand the effect of material parameter values on part ...
ificantdoithomieitcantbedone's user avatar
0 votes
0 answers
72 views

How to calculate Strain Energy Density from Abaqus hyperelastic simulation?

I am modeling a deformation of a rubber material using Abaqus/Explicit using Ogden hyperelastic model. I can visualize Stress (S) and Displacements (U), but I am interested in plotting the strain ...
SNIreaPER's user avatar
0 votes
0 answers
14 views

How can I create a constant temperatur-Load in Abaqus?

Im working of a model of a clamped steel hollow section column, which is stressed by a local fire. I would like to map the case of fire by area with a constant temperature. For this I have set the ...
Kristine's user avatar
0 votes
0 answers
20 views

Abaqus error: Too many attempts for hyper-elastic pneumatic inflation simulation

I encounter the too many attempt error in my hyperelastic silicone rubber soft actuator inflation simulation. This is the original structure: This is the air pressure load and Boundary constraint ...
HaiyingTang_996_ICU's user avatar
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0 answers
42 views

Plate theory vs FEA

I’ve modelled a plate in Abaqus FEA, and I also calculated the Stress and deflection by hand using plate theory- Why is it that plate theory and simulation deflection and Bon Mises stress values vary ...
Henry's user avatar
  • 1
0 votes
0 answers
82 views

ABAQUS STRI3 Element, local coordination system

As you know ABAQUS have a triangle plate bending element named STRI3. After analysis (post-process) when user generate report for internal stress of those STRI3 elements, abaqus give the Cauchy stress ...
epsi1on's user avatar
  • 228
0 votes
1 answer
177 views

In FEM, what is the difference between a single element with a quadratic shape function and two elements with linear shape functions?

Using Finite Element Analysis to obtain a Weak form of a PDE, what is the difference between the two cases: A single element with a quadratic shape function Two elements with linear shape functions. ...
Eggart's user avatar
  • 1
0 votes
0 answers
54 views

Why the model with rebar layer shows one sided plastic strain in Abaqus?

Using the damaged plasticity model, I modeled a concrete coupled shear wall in Abaqus, once with discrete rebar and once with rebar layers for the slab. I used the general static solver to run the ...
Mohammad Mehdi Ebadi's user avatar
0 votes
0 answers
314 views

ABAQUS: How to connect a shell edge with a shell face?

I'm performing a buckling analysis of a stiffened aluminium panel. The panel and flatbar stiffener(2) is created as one 3D shell extrusion. The T-stiffener (1) is another 3D shell extrusion. How do I ...
Jonas's user avatar
  • 1
0 votes
0 answers
116 views

Fatigue modelling in Abaqus

My problem: I'm trying to model fatigue disbond growth in Abaqus. So far I've tried this using multiple approaches with mixed results. What I've tried: I first started with modelling a static general ...
Nathan's user avatar
  • 69
0 votes
0 answers
811 views

How to get version from an abaqus output database file?

I want to read some data from an .odb file, but when I open it using the C++ API I always get this error message: file.odb is from a more recent release of Abaqus. The current Abaqus installation ...
Jonas Pucher's user avatar
0 votes
0 answers
22 views

Must I use viscoplastic model to fit the thermoplastic material

I need to do the simulation with a specified material. It is known as a thermoplastic. During the simulation, I need to define the material property. I need to choose whether it is viscoplastic or ...
yuxuan's user avatar
  • 149
0 votes
1 answer
701 views

How to query stress and strain values in a specific element in Abaqus?

I am trying to find easier way to get stress and strain values in a specific element in Abaqus. Does anyone know how to do it? Is it possible to do with Query? Thanks
Cindy.Karina9's user avatar
0 votes
2 answers
91 views

Find amount of sliding between 2 surfaces

in my project I am required to find how much two surfaces slide against each other (to see how much it'll will rub against skin). Does anyone know how I can find these results? Thanks
Stefan Younghusband's user avatar
0 votes
2 answers
758 views

Does anyone know how would one use "mutexes" in fortran user subroutine so that I can run abaqus job via parallel processing?

I really would like to run my abaqus jobs (that have user subroutines attached to them) very quickly. I have read some sections in documentation about calling a utility subroutine called "MutexInit". ...
MousumiG's user avatar
-1 votes
1 answer
1k views

How to resolve this error message 'Unknown keyword 'section:steel1'. The keyword may be misspelled, obsolete, or invalid'

I am currently having an error message 'Unknown keyword 'section:steel1'. The keyword may be misspelled, obsolete, or invalid' error message: Unknown keyword 'section:steel8e3'. The keyword may be ...
Cindy.Karina9's user avatar