lecture 4 - getting started with abaqus
TRANSCRIPT
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 1/18
Lecture 4
Getting Started with ABAQUS
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 2/18
1. Can solve problems ranging from relatively simple linear analyses to
the most challenging nonlinear simulations.
2. Extensive library of elements that can model virtually any geometry.
3. Extensive list of material models that can simulate the behavior of
most typical engineering materials.
4. Can simulate problems as heat transfer, mass diffusion, thermalmanagement of electrical components (coupled thermal-electrical
analyses), acoustics, soil mechanics (coupled pore fluid-stress
analyses), piezoelectric analysis, and fluid dynamics.
ABAQUS : a suite of powerful engineering simulation
programs, based on the finite element method
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 3/18
ABAQUS Products
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 4/18
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 5/18
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 6/18
The best way to learn ABAQUS is to follow the examples
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 7/18
There are many types of example problems
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 8/18
You may also start from Benchmark Examples that are simpler.
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 9/18
Let’s start from the geometrically nonlinear analysis of a
cantilever beam
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 10/18
For this example, there are a lot of input files according to
various element types
Click on the name to
obtain the input file
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 11/18
Copy this file to a folder whichyou want to run ABAQUS
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 12/18
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 13/18
Or you can download this file by the following procedure:
1. Run the ABAQUS command window (from the program list)
2. Change the working directory to the one which you wish to run
3. Type this command: abaqus fetch job=input file name
The input file namecan be found in the
ABAQUS manual
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 14/18
Now your folder should have this file:
We can then run this file by using ABAQUS run command:
abaqus job=nlgeocantilever_b22h_tload inter
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 15/18
Again, you need to learn ABAQUS/viewer
After the job is finished, use ABAQUS/Viewer to see the results
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 16/18
If you create your model by using ABAQUS/CAE, by default, when you
submit a job associated with a model for analysis, ABAQUS/CAEgenerates an input file representing your model and then
ABAQUS/Standard or ABAQUS/Explicit analyzes that input file.
You can also write the input file without immediately performing the
analysis so that you can make some modifications. To do this, selectJobWrite Input job of your choice
from the main menu bar. The input file job name.inp is written to the
directory from which you started ABAQUS/CAE.
You can also write an input file by selecting the job of your choice and thenclicking Write Input in the Job Manager.
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 17/18
*heading
whole model of C4-C6 spine segment
**** fem model for spine segment
**
*node, input=node-coord
*element, type=c3d8, input=newsolid-element-8, elset=vertebrae
**
** element and material properties
**
*solid section, elset=vertebrae, material=vertebra
*material, name=vertebra
*elastic
2500, 0.3
Continued in next slide
8/19/2019 Lecture 4 - Getting Started With ABAQUS
http://slidepdf.com/reader/full/lecture-4-getting-started-with-abaqus 18/18
**
** -------------------------------- step 1**
*step, inc=1000, nlgeom
bend the rigid surface on the top of C2
*static, stabilize
0.01, 1, 1e-6, 0.01
**** boundary conditions
**
*boundary, op=new
Write your own boundary conditions
*loading, op=new
Write your own loading conditions
**
** output request**
*restart, write, freq=0
*node print, freq=0
*el print, freq=0
*node file, freq=0
*el file, freq=0*output, field, frequency=5
*element output
s, e
*node output
u, rf, PCAV
*output, history, frequency=0*end step