Lecture 4 - Getting Started With ABAQUS

8/19/2019 Lecture 4 - Getting Started With ABAQUS

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Lecture 4

Getting Started with ABAQUS



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



ABAQUS Products



The best way to learn ABAQUS is to follow the examples



There are many types of example problems



You may also start from Benchmark Examples that are simpler.



Let’s start from the geometrically nonlinear analysis of a

cantilever beam



For this example, there are a lot of input files according to

various element types

Click on the name to

obtain the input file



Copy this file to a folder whichyou want to run ABAQUS



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



Now your folder should have this file:

We can then run this file by using ABAQUS run command:

abaqus job=nlgeocantilever_b22h_tload inter



Again, you need to learn ABAQUS/viewer

After the job is finished, use ABAQUS/Viewer to see the results



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.



*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



**

** -------------------------------- 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

Lecture 4 - Getting Started With ABAQUS

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