OS-E: 0015 Pretension Analysis using Gasket Material
Structure quarter symmetric pipe model with pretension bolt and a gasket seal,
demonstrates the usage of gasket material and gasket seal specific results for
diagnostics.
Figure 1. FE Model
Model Files
Before you begin, copy the file(s) used in this example to
your working directory.
The finite element model, as shown in Figure 1, is constrained
with symmetric boundary conditions and pretension force is applied on the bolt.
FE Model
Element Types
CHEXA
CPENTA
CGASK8
The linear material properties are:
Linear Material
Young’s Modulus
2.1E5 MPa
Poisson's Ratio
0.3
Gasket Material
MAT1
MGASK
Results
Review the gasket seal status (sealing status of gasket is detected with the leakage
pressure. If the gasket pressure is larger than the leakage pressure, it is detected to be
sealed – the output status index value is 1; otherwise, it is leaking – the output status
index value is 0) and gasket thickness direction closure/pressure, as shown in Figure 2.
Figure 2. Gasket Seal Status, Gasket Closure, and Gasket Pressure Plots
