Mechanical APDL Structural Analysis Guide

(lily) #1
TBPT,, 0.47500E-03, 0.13500E+08
TBPT,, 0.46800E-03, 0.15000E+07
TBPT,, 0.00000E+00, 0.00000E+00

A sample plot representing nonlinear unloading curves is shown in Figure 10.4: Gasket Material Input:
Nonlinear Unloading Curves (p. 324).


Figure 10.4: Gasket Material Input: Nonlinear Unloading Curves


10.4.3. Temperature Dependencies


Inputting temperature dependent gasket material properties follows the standard ANSYS procedure for
inputting temperature dependent data for other materials. The following format shows this procedure.


TB,GASKET,MAT,NTEMP,NPTS,LUNL
TBTEMP,T1
TBPT,,x1,y1
TBPT,,x2,y2
TBTEMP,T2
TBPT,,x1,y1
TBPT,,x2,y2

ANSYS will automatically interpolate the temperature data to the material points using linear interpol-
ation. When the temperature is out of the specified range, the closest temperature point is used.


The following is an example input listing defining a compressive pressure vs. closure behavior of a
gasket joint material with 5 temperature points and up to 10 data points for each temperature point,
and 3 nonlinear unloading curves with each curve having 5 temperatures and 5 data points.


TB,GASKET,1, 5,10,COMP! define compression data with 5 temperatures
TBTEMP, 100.000
TBPT,, 0.20000E-04, 0.54000E+08
TBPT,, 0.40000E-04, 0.15150E+09
TBPT,, 0.60000E-04, 0.24900E+09
TBPT,, 0.78000E-04, 0.30000E+09
TBPT,, 0.12000E-03, 0.37200E+09
TBPT,, 0.19000E-03, 0.47400E+09
TBPT,, 0.28600E-03, 0.58500E+09
TBPT,, 0.35800E-03, 0.67350E+09
TBPT,, 0.43200E-03, 0.78000E+09
TBPT,, 0.50500E-03, 0.89550E+09

TBTEMP, 200.000
TBPT,, 0.20000E-04, 0.18000E+08
TBPT,, 0.40000E-04, 0.50500E+08
TBPT,, 0.60000E-04, 0.83000E+08
TBPT,, 0.78000E-04, 0.10000E+09

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Gasket Joints Simulation

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