Example 424: Plane stress BEM problem

This example tests linear elastic plane stress solution in CMISS using the BEM. The problem consists of a rectangular plate 1m wide by 2m high. The plate is subjected to a uniaxial load of 1kN/m. The plate has a Young's Modulus of 210GPa and a Poisson's ratio of 0.3. The solution displacements are in um.

The comfile run by this example is as follows:

#This example tests plane stress BEM on a rectangular plate subject to
#a uniform tension.
fem                            #Set up the FEM environment
fem define coord;r;rectangle_force;example #Set up 2D r.c.
fem define bas;r;;example          #Linear elements
fem define node;r;;example         #Rectangular domain
fem define elements;r;;example     #Elements around the boundary
fem define window;c            #Calculate the size of the window
fem draw nodes                 #Show the nodes
fem draw lines                 #Show the lines
fem define fibre;d             #Default fibre angle
fem define element;r;;example fibre
fem define equation;r;;example     #Define a static linear elastic problem with
#                              !  plane strain elements
fem define material;r;;example     #Define the material parameters. Young's modulus
#                              !  is 210 GPa and Poison's ratio is 0.3
fem define initial;r;;example      #Define the boundary conditions. Set forces
#                              !  for all nodes except those on the base.
fem define solve;r;;example        #Define the solver used.
fem solve                      #Solves the problem
fem draw line deformed dotted scale 4 #Draws (scaled) deformed body
#                              !with dotted lines
fem list node solution         #List the nodal displacements
fem list node reaction         #List the nodal reactions (forces)
fem draw reaction scale 0.1   #Draw (scaled) reaction (force) vectors

Additional testing commands:

fem list node solution

Files used by this example are:

Name                    Modified     Size

example_424.com         10-Apr-2000  1.5k
rectangle_force.ipbase  10-Apr-2000  855 
rectangle_force.ipcoor  10-Apr-2000  858 
rectangle_force.ipelem  10-Apr-2000  4.0k
rectangle_force.ipelfb  10-Apr-2000  2.2k
rectangle_force.ipequa  26-May-2003  1.6k
rectangle_force.ipinit  10-Apr-2000  899 
rectangle_force.ipmate  10-Apr-2000  1.4k
rectangle_force.ipnode  10-Apr-2000  2.5k
rectangle_force.ipsolv  13-Apr-2007  1.2k
test_output.com         10-Apr-2000   23 

Download the entire example:

Name                      Modified     Size

examples_4_42_424.tar.gz  14-Apr-2007  5.8k

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 05:50:20 2016

Input last modified: Fri Apr 13 10:33:10 2007