Questions tagged [abaqus]

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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 ...
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0answers
9 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 ...
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1answer
28 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 (...
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12 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 ...
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0answers
12 views

Assigning different thicknesses to single part - ABAQUS

I am trying to validate the results of linear analysis from RSTAB (structural analysis tool) with ABAQUS. The model comprises of approximately 800 members. Each member is composed of built-up sections ...
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0answers
25 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 ...
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0answers
60 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 ...
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0answers
21 views

Save Field output in ABAQUS

I created a field output on abaqus from tools>create field output but it does not save in the .odb file. It can only be viewed in the current session but as soon as I restart abaqus or reopen the ....
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0answers
38 views

What is the reason behind error: “the executable pre aborted with system error ”abnormal terminal request (signal 6)"?

I am trying to do an indentation simulation in Abaqus. I am using Dynamic Implicit step, the BCs are defined as the bottom to be fixed, the allocator is allowed to have movement in only y direction (...
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4answers
119 views

Physical meaning of increment in static problem in abaqus

When we use Abaqus to solve the static problem, one step is to set: Time period, the number of increments and increments size. But since the static problem is not time-dependent, there is no time, ...
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1answer
32 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
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0answers
21 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 ...
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0answers
14 views

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?
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2answers
130 views

How to perform 3 point bending test by using force instead of displacement in ABAQUS?

I know you can apply displacement to a rigid body (cylindrical rod) to perform a 3 point bending test in ABAQUS. Is it possible to apply force to the rod (e.g. rod with super high young's modulus so ...
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0answers
72 views

How can I do engineering projects for money at home? [closed]

I am a M.Sc. graduate in mechanical engineering and I have experience with engineering software, like MATLAB, CATIA, and ABAQUS. I want to know how I can find industrial projects like finite element ...
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1answer
67 views

Abaqus Failure for I-Beam Section in Major direction only

For my 4th year dissertation in Civil Engineering I've got to investigate the difference between BS5950, Eurocode 3 and ABAQUS failures. The only thing is, in the BS5950 and Eurocode 3 the failure can ...
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1answer
562 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 ...
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2answers
829 views

Is there any reason for Abaqus to give this error message “Illegal memory reference (signal11)” whenever the number of statev is greater than 15?

I work with Abaqus CAE/Standard a lot! Whenever I have tried to put the number below the *Depvar keyword to be greater than 15 (and there can be any subroutines (UMAT or USDFLD) with no coding in it, ...
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0answers
90 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 ...
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0answers
60 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 ...
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1answer
51 views

Is it true that if the structure damaged or corroded, the stress will be lower?

I am comparing the stress results between original or non-corroded model to corroded model. I found that the stress value in non corroded model is lot more bigger than the corroded model, is it ...
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1answer
99 views

How to calculate residual strength of a corroded structure from their stress values?

Currently, I have an actual entire corroded bridge model in the FEM analysis in Abaqus I want to estimate the residual strength of this bridge due to corrosion from the output results in the Abaqus, I ...
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3answers
60 views

What is the good reason if the curves between two results are not similar?

According to my results, I can have this curves. And somehow in this figure, it is not pretty much similar, What can I say if it is asked why I still want to use the FEM results? Or how can I ...
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1answer
501 views

Spatially dependent material property in Abaqus/CAE

I am modelling a plate as 3D deformable solid. My plate has a spatially dependent isotropic thermal expansion coefficient. I have defined this spatial distribution as a Discrete Field in a tabular ...
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0answers
65 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) ...
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2answers
248 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". ...
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0answers
252 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 ...
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0answers
498 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 ...
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0answers
24 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 ...
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1answer
237 views

in keyword *SURFACE, file “FSECase1cor.inp”, line 79025: Unknown assembly element set_M_SURF-1016_E3 (What does this error mean?)

I submitted the edited inp. file in abaqus. I edited the thickness of shell elements then after I run the edited inp. file, I am suffering from this error. Actually, there is another error: "There ...
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1answer
492 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 ...
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1answer
2k views

ABAQUS Analysis: Difference between assigning Section as Plane stress/strain vs. Element type?

In ABAQUS, there are multiple ways to specif your part is in plane stress/strain. 1. When assigning the section, one can specify that it is a generalized plane strain section. 2. When assigning the ...
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1answer
425 views

Cyclic loading on ABAQUS CAE

I am new to abaqus and for my final year project I'm meant to simulate a force on a cylinder (testing displacement of articular cartilage) ranging from 1-15 Hz and between 15-36 Newtons but I don'...
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1answer
82 views

How to know which constraints suffer from 'nodes are used more than once as slave node' in abaqus?

I have been struggling to find which node and constraint suffering from 'nodes are used more than once as a slave node' in abaqus error message. Please help me resolve this problem Thank you
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0answers
360 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 ...
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0answers
44 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 ...
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0answers
76 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: ...
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1answer
412 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
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0answers
22 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 ...
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1answer
345 views

How to get all forces and displacements values in abaqus and export it to excel?

I have made bridge model in Abaqus, I also have done experimental study and I have the load-displacement data from my experiment, I am now going to compare the results from Abaqus and the results ...
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1answer
24 views

is there any other ways to refine mesh size in particular place without making a partition?

I am currently making a corroded model in Abaqus, but not all locations are suffering from corrosion. As shown in the picture there are some parts (the blue parts) that do suffer from corrosion, so ...
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1answer
249 views

How to obtain strain and stress values by editing abaqus input file?

I am currently working on abaqus modeling, I am trying to find a quick way to get the strain and stress values shown in the output file. What do I need to put in the .inp file? Does anyone know how ...
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2answers
3k views

How to Solve this error message on Abaqus 'time increment required is less than specified' and 'too many attempts made for this increment'?

I am currently working on my dissertation project using abaqus, my model is an arch bridge consisting of a shell and solid elements, there are concrete and steel materials also, I have checked all of ...
2
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2answers
197 views

How the amount of bolt's preload in a single lap joint can change the natural frequencies?

Few days ago someone told me that the amount of bolt's preload in a single lap joint can influence the natural frequency of the beam. So to test that out I modeled a 3D single lap joint in ABAQUS and ...
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1answer
293 views

How to derive deformation gradient or displacement gradient?

In one of my project, I need deformation gradient or displacement gradient for some elements in my model that made by ABAQUS software and I can't find it directly, any suggestion or help would be ...
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1answer
50 views

Mechanical Engineering- Modeling contact in Abaqus

I have simulated a 2D model in Abaqus which indicates 2 main part, first a sector that represent as wheel and, second a rectangular that represent rail. the wheel and rail are in contact and wheel ...
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2answers
1k views

How to decide initial size increment in Abaqus Dynamic Implicit?

I am using Dynamic Implicit to model a rolling problem. But I am not really sure what to choose as Initial increment. The default suggestion by Abaqus is the step time.
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0answers
941 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. ...
3
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1answer
888 views

What are exact location of Integration Points in STRI3 element in ABAQUS?

Introduction I have a file with .rpt extension from ABAQUS which is output of a model. This .rpt contains stresses of elements and displacements of nodes in plane text format. There is an item with ...
2
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1answer
143 views

FRF based material constant optimization

I need advice on how to optimize a finite element model of a transversely isotropic material. I have modeled the material with 5 nominal moduli in Abaqus and performed an eigenvalue extraction. ...