Example 523: Uniaxial force for 10% elongation on a unit cube

A 3D unit cube of incompressible Mooney-Rivlin material is force loaded on the X=1 face, so that it moves by 10% in the +X direction, while keeping the X=0 face fixed (uniaxial extension).

The comfile run by this example is as follows:

#Example_523  Uniaxial force for 10% elongation on a unit cube

              #This problem is set up the same as in the uniaxial 
              #extension of the unit cube except that a force is
              #applied to certain nodes in the X-direction instead of 
              #a 10% extension.

if (!defined $example) {
    $example = "./";
}
# Drop off the trailing / in the example path
$chopped = chop $example;
if ($chopped ne "/") {
    $example .= $chopped;
}
fem define coordinates;r;uniforce;example #Define 3D rectangular cartesian. 
fem define node;r;;example         #Defines 8 nodes.
fem define base;r;;example	       #Defines 3 basis functions. 
fem define element;r;;example      #Defines 1 element.            
fem def fibr;r;;example
fem def elem;r;;example fibre
fem define window
fem draw lines
fem define equation;r;;example     #Read in equation information.
fem define material;r;;example     #Read in material information.
fem define initial;r;;example      #For the initial conditions, set up the
#                              !  same as in the first uniaxial problem
#                              !  except instead of fixing nodes 2,4,6,8
#                              !  for equation 1 to 0.1, apply a force
#                              !  boundary condition to these nodes of
#                              !  magnitude that will give the same 10% 
#                              !  elongation, ie Cauchy stress*deformed
#                              !  area/# nodes or 4.486*0.9535*0.9535/4
#                              !  =1.0196.
fem define solve;r;;example        #Read in solution information.
fem solve step 1 error 10D-10  #Solve the problem.  Results should be 
#                              !  the same as in the 10% uniaxial 
#                              !  extension problem.
fem draw line deformed dotted
fem list strain at 1 ref       #List strain information.
fem list stress at 1 ref       #List stress information.

Additional testing commands:

fem list stress at 1 ref
fem list strain at 1 ref

Files used by this example are:

Name                 Modified     Size

example_523.com      24-May-2004  1.9k
test_output.com      24-May-2004   50 
uniforce.ipbase      10-Apr-2000  3.4k
uniforce.ipcoor      10-Apr-2000  619 
uniforce.ipelem      10-Apr-2000  457 
uniforce.ipelfb      24-May-2004  398 
uniforce.ipequa      02-May-2004  2.1k
uniforce.ipfibr      24-May-2004  2.1k
uniforce.ipinit      26-May-2004  1.5k
uniforce.ipmate      05-Dec-2002  2.3k
uniforce.ipnode      10-Apr-2000  1.9k
uniforce.ipsolv      16-Aug-2010  2.4k
uniforce.ipsolv.old  13-Apr-2007  2.2k

Download the entire example:

Name                      Modified     Size

examples_5_52_523.tar.gz  14-Aug-2014  7.1k

Testing status by version:

Testing status by file:

• cmiss_test.log
  

  i686-linux
  Success	cm:	cmiss_test.log.retain.
  Success	cm-debug:	cmiss_test.log.retain.
  mips-irix
  Success	cm:	cmiss_test.log.retain.
  Success	cm-debug:	cmiss_test.log.retain.
  Success	cm-debug-clear-malloc:	cmiss_test.log.retain.
  Success	cm-debug-clear-malloc7:	cmiss_test.log.retain.
  Success	cm64:	cmiss_test.log.retain.
  Success	cm64-debug:	cmiss_test.log.retain.
  Success	cm64-debug-clear-malloc:	cmiss_test.log.retain.
  rs6000-aix
  Success	cm:	cmiss_test.log.retain.
  Success	cm-debug:	cmiss_test.log.retain.
  Success	cm64:	cmiss_test.log.retain.
  Success	cm64-debug:	cmiss_test.log.retain.
  x86_64-linux
  Success	cm:	cmiss_test.log.retain.
  Success	cm-debug:	cmiss_test.log.retain.

  
  
• cmiss_test.out
  

  i686-linux
  Success	cm:	ndiff test: no significant differences with generic answer.
  Success	cm-debug:	ndiff test: no significant differences with generic answer.
  mips-irix
  Success	cm:	ndiff test: no significant differences with generic answer.
  Success	cm-debug:	ndiff test: no significant differences with generic answer.
  Success	cm-debug-clear-malloc:	ndiff test: no significant differences with generic answer.
  Success	cm-debug-clear-malloc7:	ndiff test: no significant differences with generic answer.
  Success	cm64:	ndiff test: no significant differences with generic answer.
  Success	cm64-debug:	ndiff test: no significant differences with generic answer.
  Success	cm64-debug-clear-malloc:	ndiff test: no significant differences with generic answer.
  rs6000-aix
  Success	cm:	ndiff test: no significant differences with generic answer.
  Success	cm-debug:	ndiff test: no significant differences with generic answer.
  Success	cm64:	ndiff test: no significant differences with generic answer.
  Success	cm64-debug:	ndiff test: no significant differences with generic answer.
  x86_64-linux
  Success	cm:	ndiff test: no significant differences with generic answer.
  Success	cm-debug:	ndiff test: no significant differences with generic answer.

  
  

Html last generated: Sun Mar 6 05:50:22 2016

Input last modified: Thu Aug 14 10:03:13 2014