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MODAL.txt
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File: MODAL.CRM
PERFORM A MODAL ANALYSIS
THIS WILL BE A NEW ANALYSIS
USE HOUSEHOLDER METHOD
EXTRACT 5 MODES
PRINT 0 REDUCED MODES
NORMALIZE THE MODE SHAPES TO THE MASS MATRIX
NUMBER OF MODES TO EXPAND= 5
DO NOT CALCULATE ELEMENT RESULTS
PARAMETER TOTL = 50.00000
TOTAL MASTER D.O.F.= 50
NO ROTATIONAL MASTER KEY= 1
***** ANSYS SOLVE COMMAND *****
***** ANSYS - ENGINEERING ANALYSIS SYSTEM REVISION 5.0A *****
Resonant diaphragm pressure sensor
S O L U T I O N O P T I O N S
PROBLEM DIMENSIONALITY. . . . . . . . . . . . .3-D
DEGREES OF FREEDOM. . . . . . UX UY UZ ROTX ROTY ROTZ
ANALYSIS TYPE . . . . . . . . . . . . . . . . .MODAL
EXTRACTION METHOD. . . . . . . . . . . . . .REDUCED
NUMBER OF MODES TO EXTRACT. . . . . . . . . . . 5
NUMBER OF REDUCED MODES TO PRINT. . . . . . . . 0
NUMBER OF MASTER DOF. . . . . . . . . . . . . . 50
NUMBER OF MODES TO EXPAND . . . . . . . . . . . 5
ELEMENT RESULTS CALCULATION . . . . . . . . . .OFF
L O A D S T E P O P T I O N S
LOAD STEP NUMBER. . . . . . . . . . . . . . . . 1
PRINT OUTPUT CONTROLS . . . . . . . . . . . . .NO PRINTOUT
DATABASE OUTPUT CONTROLS. . . . . . . . . . . .ALL DATA WRITTEN
***** CENTROID, MASS, AND MASS MOMENTS OF INERTIA *****
CALCULATIONS ASSUME ELEMENT MASS AT ELEMENT CENTROID
TOTAL MASS = .49282E-08
MOM. OF INERTIA MOM. OF INERTIA
CENTROID ABOUT ORIGIN ABOUT CENTROID
XC = 4.6000 IXX = .1387E-06 IXX = .3441E-07
YC = 4.6000 IYY = .1387E-06 IYY = .3441E-07
ZC = .00000E+00 IZZ = .2774E-06 IZZ = .6882E-07
IXY = -.1043E-06 IXY = .1323E-22
IYZ = .0000E+00 IYZ = .0000E+00
IZX = .0000E+00 IZX = .0000E+00
*** MASS SUMMARY BY ELEMENT TYPE ***
TYPE MASS
1 .492816E-08
Range of element maximum matrix coefficients in global coordinates
Maximum= 1909.14616 at element 20.
Minimum= 1909.14616 at element 55.
*** ELEMENT MATRIX FORMULATION TIMES
TYPE NUMBER ENAME TOTAL CP AVE CP
1 100 SHELL43 1.640 .016
Time at end of element matrix formulation CP= 2.87.
Estimated number of active DOF= 486.
Maximum wavefront= 124.
Time at end of matrix triangularization CP= 4.05.
Equation solver maximum pivot= 7635.86132 at node 20 UX.
Equation solver minimum pivot= 1.29617023 at node 109 ROTZ.
***** EIGENVALUE (NATURAL FREQUENCY) SOLUTION *****
MODE FREQUENCY (CYCLES/TIME)
1 4202.44957
2 8728.82514
3 8885.92158
4 12931.8617
5 16428.5348
*** PROBLEM STATISTICS
ACTUAL NO. OF ACTIVE DEGREES OF FREEDOM = 436
R.M.S. WAVEFRONT SIZE = 109.6
NUMBER OF MASTER DEGREES OF FREEDOM = 50
*** ANSYS BINARY FILE STATISTICS
BUFFER SIZE USED= 4096
.531 MB WRITTEN ON ELEMENT MATRIX FILE: file.emat
.266 MB WRITTEN ON ELEMENT SAVED DATA FILE: file.esav
.391 MB WRITTEN ON TRIANGULARIZED MATRIX FILE: file.tri
.047 MB WRITTEN ON MODAL MATRIX FILE: file.mode
.125 MB WRITTEN ON RESULTS FILE: file.rst