Elastic properties of bellows and lens expansion joints are their linear and angular flexibility. These properties must be input for all pipelines with these types of expansion joints. Although these data are often provided in expansion joint catalogues, they are hard to utilize due to complications with terminology. To simplify this problem, elastic properties are determined based on structural parameters that are easy to understand.
Input data can be copied using the toolbar icon and inserted into any other Start-Elements analysis by using the toolbar icon in that file.
Property |
Description |
Corrugated element external diameter, De |
See figure |
Corrugated element internal diameter, Di |
See figure |
Corrugated element wall thickness, S |
See figure |
Wave (lens) spacing, q |
See figure |
Wave (lens) number |
See figure |
Operation temperature, Тwork |
Operation temperature in operation state. More... |
Steel grade |
Pipe material from the materials database |
START-PROF calculates axial, angular and lateral stiffness and flexibility of the expansion joint (depending on selected element type). See also "flexibility, stiffness"
Expansion joint > Axial Expansion Joint
Expansion joint > Gimbal Expansion Joint
Expansion joint > Lateral Expansion Joint