This document summarizes the finite element analysis of a pressure system (JK-01). It includes the 3D model geometry containing three parts, defined connections between parts, meshing, and static structural analysis applying pressures and supports. The analysis calculated stresses, deformations and resulted in maximum stresses of 12.185 MPa and 1.3683 mm total deformation occurring in the solid parts. Material properties of structural steel and polyethylene were also defined.

1. Project 10-004
Pressure system JK-01
First Saved Wednesday, June 30, 2010
Last Saved Wednesday, June 30, 2010
Product Version 11.0 SP1 Release

2. Contents
 Model
o Geometry
 Parts
o Connections
 Contact Regions
o Mesh
o Static Structural
 Analysis Settings
 Loads
 Solution
 Solution Information
 Results
 Material Data
o Structural Steel
o Polyethylene
Units
TABLE 1
Unit System Metric (mm, kg, N, °C, s, mV, mA)
Angle Degrees
Rotational Velocity rad/s
Model
Geometry
TABLE 2
Model > Geometry
Object Name Geometry
State Fully Defined
Definition
Source
D:INGEMEK OFERTAS MEF10-004 Pressure system JK-
01Input_fileInput_filePressure_System.x_t
Type Parasolid
Length Unit Meters
Element Control Program Controlled
Display Style Part Color
Bounding Box
Length X 100, mm
Length Y 259,35 mm
Length Z 411,03 mm
Properties
Volume 3,8729e+005 mm³
Mass 1,7159 kg
Statistics
Bodies 3
Active Bodies 3
Nodes 8041
Elements 3838

3. Preferences
Import Solid Bodies Yes
Import Surface Bodies Yes
Import Line Bodies Yes
Parameter Processing Yes
Personal Parameter
Key
DS
CAD Attribute Transfer No
Named Selection
Processing
No
Material Properties
Transfer
No
CAD Associativity Yes
Import Coordinate
Systems
No
Reader Save Part File No
Import Using Instances Yes
Do Smart Update No
Attach File Via Temp
File
No
Analysis Type 3-D
Mixed Import
Resolution
None
Enclosure and
Symmetry Processing
Yes
TABLE 3
Model > Geometry > Parts
Object Name Solid Solid Solid
State Meshed
Graphics Properties
Visible Yes
Transparency 1
Definition
Suppressed No
Material Structural Steel Polyethylene Structural Steel
Stiffness Behavior Flexible
Nonlinear Material Effects Yes
Bounding Box
Length X 25, mm 100, mm 50, mm
Length Y 177,91 mm 100, mm 118,95 mm
Length Z 331,03 mm 90, mm 28, mm
Properties
Volume 1,4394e+005 mm³ 1,9193e+005 mm³ 51414 mm³
Mass 1,1299 kg 0,18234 kg 0,4036 kg
Centroid X 3,9346e-009 mm 4,3844e-014 mm 3,7279e-009 mm
Centroid Y 94,615 mm 152,91 mm 203,76 mm
Centroid Z -150,5 mm -365,79 mm -234,04 mm
Moment of Inertia Ip1 12775 kg·mm² 352,35 kg·mm² 496,29 kg·mm²
Moment of Inertia Ip2 11579 kg·mm² 352,35 kg·mm² 98,14 kg·mm²
Moment of Inertia Ip3 1312,4 kg·mm² 338,69 kg·mm² 567,27 kg·mm²
Statistics
Nodes 3941 1788 2312
Elements 1924 838 1076

4. FIGURE 1
Model > Geometry > Figure
Connections
TABLE 4
Model > Connections
Object Name Connections
State Fully Defined
Auto Detection
Generate Contact On Update Yes
Tolerance Type Slider
Tolerance Slider 0,
Tolerance Value 1,2405 mm
Face/Face Yes
Face/Edge No
Edge/Edge No
Priority Include All
Same Body Grouping Yes
Revolute Joints Yes
Fixed Joints Yes
Transparency
Enabled Yes

5. TABLE 5
Model > Connections > Contact Regions
Object Name Contact Region No Separation - Solid To Solid
State Fully Defined
Scope
Scoping Method Geometry Selection
Contact 1 Face
Target 1 Face
Contact Bodies Solid
Target Bodies Solid
Definition
Type Bonded No Separation
Scope Mode Automatic
Behavior Symmetric
Suppressed No
Advanced
Formulation Pure Penalty
Normal Stiffness Program Controlled
Update Stiffness Never
Thermal Conductance Program Controlled
Pinball Region Program Controlled
Mesh
TABLE 6
Model > Mesh
Object Name Mesh
State Solved
Defaults
Physics Preference Mechanical
Relevance 0
Advanced
Relevance Center Coarse
Element Size Default
Shape Checking Standard Mechanical
Solid Element Midside Nodes Program Controlled
Straight Sided Elements No
Initial Size Seed Active Assembly
Smoothing Low
Transition Fast
Statistics
Nodes 8041
Elements 3838

6. Static Structural
TABLE 7
Model > Analysis
Object Name Static Structural
State Fully Defined
Definition
Physics Type Structural
Analysis Type Static Structural
Options
Reference Temp 22, °C
TABLE 8
Model > Static Structural > Analysis Settings
Object Name Analysis Settings
State Fully Defined
Step Controls
Number Of Steps 1,
Current Step Number 1,
Step End Time 1, s
Auto Time Stepping Program Controlled
Solver Controls
Solver Type Program Controlled
Weak Springs Program Controlled
Large Deflection Off
Inertia Relief Off
Nonlinear Controls
Force Convergence Program Controlled
Moment
Convergence
Program Controlled
Displacement
Convergence
Program Controlled
Rotation
Convergence
Program Controlled
Line Search Program Controlled
Output Controls
Calculate Stress Yes
Calculate Strain Yes
Calculate Results At All Time Points
Analysis Data Management
Solver Files Directory
D:INGEMEKSOLUCIONES MEFStatic Structural10-004
Pressure system JK-01
Future Analysis None
Save ANSYS db No
Delete Unneeded
Files
Yes
Nonlinear Solution No

7. TABLE 9
Model > Static Structural > Loads
Object Name Pressure Pressure 2
Fixed
Support
Cylindrical
Support
Frictionless
Support
State Fully Defined
Scope
Scoping
Method
Geometry Selection
Geometry 5 Faces 3 Faces 1 Face
Definition
Define By Normal To
Type Pressure
Fixed
Support
Cylindrical
Support
Frictionless
Support
Magnitude
1, MPa
(ramped)
0,2 MPa
(ramped)
Suppressed No
Radial Fixed
Axial Fixed
Tangential Fixed
FIGURE 2
Model > Static Structural > Pressure

8. FIGURE 3
Model > Static Structural > Pressure 2
Solution
TABLE 10
Model > Static Structural > Solution
Object Name Solution
State Solved
Adaptive Mesh Refinement
Max Refinement Loops 1,
Refinement Depth 2,
TABLE 11
Model > Static Structural > Solution > Solution Information
Object Name Solution Information
State Solved
Solution Information
Solution Output Solver Output
Newton-Raphson Residuals 0
Update Interval 2,5 s
Display Points All

9. TABLE 12
Model > Static Structural > Solution > Results
Object
Name
Equivalent
Stress
Total
Deformation
Total
Deformation
(cámara
expansión)
Total
Deformation
(tubo)
Total
Deformation
(contacto chapa)
State Solved
Scope
Geometry All Bodies 1 Body
Definition
Type
Equivalent
(von-Mises)
Stress
Total Deformation
Display
Time
End Time
Results
Minimum
7,5136e-003
MPa
0, mm 9,6999e-003 mm 0, mm
Maximum 12,185 MPa 1,3683 mm
3,7526e-002
mm
2,0645e-002 mm
Minimum
Occurs On
Solid
Maximum
Occurs On
Solid
Information
Time 1, s
Load Step 1
Substep 1
Iteration
Number
1

10. FIGURE 4
Model > Static Structural > Solution > Equivalent Stress > Figure

11. FIGURE 5
Model > Static Structural > Solution > Total Deformation > Figure

12. FIGURE 6
Model > Static Structural > Solution > Total Deformation (cámara expansión) > Figure

13. FIGURE 7
Model > Static Structural > Solution > Total Deformation (tubo) > Figure

14. FIGURE 8
Model > Static Structural > Solution > Total Deformation (contacto chapa) > Figure
TABLE 13
Model > Static Structural > Solution > Results
Object Name
Equivalent Stress (cámara
expansión)
Equivalent Stress
(tubo)
Equivalent Stress (contacto
chapa)
State Solved
Scope
Geometry 1 Body
Definition
Type Equivalent (von-Mises) Stress
Display Time End Time
Results
Minimum 0,12764 MPa 0,51189 MPa 7,5136e-003 MPa
Maximum 8,8161 MPa 12,185 MPa 6,3029 MPa
Information
Time 1, s
Load Step 1
Substep 1
Iteration
Number
1

15. FIGURE 9
Model > Static Structural > Solution > Equivalent Stress (cámara expansión) > Figure

16. FIGURE 10
Model > Static Structural > Solution > Equivalent Stress (tubo) > Figure

17. FIGURE 11
Model > Static Structural > Solution > Equivalent Stress (contacto chapa) > Figure
Material Data
Structural Steel
TABLE 14
Structural Steel > Constants
Structural
Young's Modulus 2,e+005 MPa
Poisson's Ratio 0,3
Density 7,85e-006 kg/mm³
Thermal Expansion 1,2e-005 1/°C
Tensile Yield Strength 250, MPa
Compressive Yield Strength 250, MPa
Tensile Ultimate Strength 460, MPa
Compressive Ultimate Strength 0, MPa
Thermal
Thermal Conductivity 6,05e-002 W/mm·°C
Specific Heat 434, J/kg·°C
Electromagnetics
Relative Permeability 10000
Resistivity 1,7e-004 Ohm·mm

18. FIGURE 12
Structural Steel > Alternating Stress
TABLE 15
Structural Steel > Alternating Stress > Property Attributes
Interpolation Log-Log
Mean Curve Type Mean Stress
TABLE 16
Structural Steel > Alternating Stress > Alternating Stress Curve Data
Mean Value MPa
0,
TABLE 17
Structural Steel > Alternating Stress > Alternating Stress vs. Cycles
Cycles Alternating Stress MPa
10, 3999,
20, 2827,
50, 1896,
100, 1413,
200, 1069,
2000, 441,
10000 262,
20000 214,
1,e+005 138,
2,e+005 114,
1,e+006 86,2

19. FIGURE 13
Structural Steel > Strain-Life Parameters
TABLE 18
Structural Steel > Strain-Life Parameters > Property Attributes
Display Curve Type Strain-Life
TABLE 19
Structural Steel > Strain-Life Parameters > Strain-Life Parameters
Strength Coefficient MPa 920,
Strength Exponent -0,106
Ductility Coefficient 0,213
Ductility Exponent -0,47
Cyclic Strength Coefficient MPa 1000,
Cyclic Strain Hardening Exponent 0,2
Polyethylene
TABLE 20
Polyethylene > Constants
Structural
Young's Modulus 1100, MPa
Poisson's Ratio 0,42
Density 9,5e-007 kg/mm³
Thermal Expansion 2,3e-004 1/°C
Tensile Yield Strength 25, MPa
Compressive Yield Strength 0, MPa
Tensile Ultimate Strength 33, MPa
Compressive Ultimate Strength 0, MPa
Thermal
Thermal Conductivity 2,8e-004 W/mm·°C
Specific Heat 296, J/kg·°C