A steel-framed building modal analysis

Example 453: A steel-framed building modal analysis

No description

The comfile run by this example is as follows:

#Example_453 Modal analysis of a steel frame building
                                                                     
fem                            #set FEM environment                  
fem define nodes;r;building;example #read in the  nodes to define a 
#                              !  building
fem define window;c            #calculate the window size
fem define bases;r;;example        #defines a bilinear basis function
fem define elements;r;;example     #defines the building elements   
fem draw lines                 #make the line segments visible
fem define fibre;d             #default fibre angle
fem define element;r;;example fibre
fem define equation;r;;example     #Define a modal analysis using linear
#                              !  elasticity with plane stress elements.
fem define material;r;;example     #Define the material parameters for 
#                              !  steel.
fem list material              #List the material
fem define initial;r;;example      #Define initial and boundary conditions
#                              !  for the problem. In this case the
#                              !  displacements of the nodes at the
#                              !  bottom of the building are fixed in
#                              !  both the x and y directions.
fem draw node                  #Show the node numbers and the fixed
#                              !  boundary conditions
fem hide node                  #Hide the node numbers
fem define solve;r;;example        #Define the solution options. Only
#                              !  find the lowest 10 modes
fem list solve                 #List the solution parameters
fem solve                      #Solves the modal analysis problem
fem list modal mode 1          #Lists the modal frequency and shape
#                              !  for mode 1
fem list modal value           #List the modal frequencies
fem draw line mode 1 dotted    #lowest frequency mode
fem draw line mode 2 dotted                         
fem draw line mode 3 dotted                         
fem draw line mode 4 dotted                         
fem draw line mode 5 dotted                         
fem draw line mode 6 dotted                        
fem draw line mode 7 dotted                        
fem draw line mode 8 dotted                         
fem draw line mode 9 dotted                         
fem draw line mode 10 dotted   #higher frequency mode

Additional testing commands:

fem list modal

Files used by this example are:

Name             Modified     Size

example_453.com  10-Apr-2000  2.4k
building.com     20-Nov-2001  204 
building.ipbase  10-Apr-2000  1.1k
building.ipelem  10-Apr-2000  6.7k
building.ipelfb  10-Apr-2000  3.7k
building.ipequa  26-May-2003  1.7k
building.ipinit  10-Apr-2000  641 
building.ipmate  10-Apr-2000  1.4k
building.ipnode  10-Apr-2000  6.8k
building.ippara  12-Nov-2002  5.8k
building.ipsolv  27-Aug-2002  487 
test_output.com  10-Apr-2000   15

Download the entire example:

Name                      Modified     Size

examples_4_45_453.tar.gz  19-Aug-2006   10k

Testing status by version:

	Status	Tested	Real time (s)
i686-linux
cm	Success	Sun May 13 01:23:02 2012	1
cm-debug	Success	Wed May 16 00:14:23 2012	2
mips-irix
cm	Success	Sun Aug 19 01:30:50 2007	4
cm-debug	Success	Wed Aug 15 01:25:34 2007	9
cm-debug-clear-malloc	Success	Sat Aug 18 01:29:16 2007	12
cm-debug-clear-malloc7	Success	Mon Aug 20 01:25:27 2007	12
cm64	Success	Sun Aug 19 01:31:14 2007	5
cm64-debug	Success	Tue Aug 21 01:24:17 2007	8
cm64-debug-clear-malloc	Success	Thu Apr 1 10:13:57 2004	5
rs6000-aix
cm	Success	Wed Mar 4 01:07:16 2009	1
cm-debug	Success	Mon Mar 2 01:06:58 2009	1
cm64	Success	Wed Mar 4 01:07:16 2009	1
cm64-debug	Success	Tue Mar 3 01:12:12 2009	2
x86_64-linux
cm	Success	Sun May 13 00:47:28 2012	0
cm-debug	Success	Wed May 16 00:06:32 2012	1

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: Wed May 16 05:55:09 2012

Input last modified: Wed Jan 4 13:46:55 2006

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