The results can be alarming, and it's so easy to do. To accomplish the same task in the past would
require running FEA software separately, generate the new SIFs and flexibilities, then make
elaborate modifications to the pipe stress model to reflect these changes; very time consuming.
require running FEA software separately, generate the new SIFs and flexibilities, then make
elaborate modifications to the pipe stress model to reflect these changes; very time consuming.
Modules included:
FE107 - FEA on fabricated branch connections: Unreinforced Tees, Pad-reinforced Tees and Laterals
Stresses per ASME Section VIII, Division 2 with comparison to WRC 107 & WRC 297.
FE-107 Screens
FESIF - FEA on fabricated branch connections: Designed to calculate SIFs and stiffness values for
use in CAESAR II.
FEBend - FEA on bends with our without attachments, including piping and structural attachments.
Generate SIFs stiffness and perform full stress evaluations. FEBend Screens
FETee - FEA on contoured Tees. Extruded and B16.9 Tees included. Useful for
evaluating non-compliant Tees.
CAESAR II Enhanced Branch Connection Modeler - Use FEA or ST-LLC-07-02 to apply more
applicable data to a CAESAR II input file than beam-theory and code defaults.
Automatically models FEA-evaluated SIFs and k's and creates a new CAESAR II model with the
modifications. This feature alone is worth the price of admission.
New Branch Connection SIFs and Ks - Display & compare SIF and stiffness factors from a
wide variety of notable sources. Also calculates stresses for various combinations of loads.
New Branch Connection SIF and Ks Screen.
FE107 - FEA on fabricated branch connections: Unreinforced Tees, Pad-reinforced Tees and Laterals
Stresses per ASME Section VIII, Division 2 with comparison to WRC 107 & WRC 297.
FE-107 Screens
FESIF - FEA on fabricated branch connections: Designed to calculate SIFs and stiffness values for
use in CAESAR II.
FEBend - FEA on bends with our without attachments, including piping and structural attachments.
Generate SIFs stiffness and perform full stress evaluations. FEBend Screens
FETee - FEA on contoured Tees. Extruded and B16.9 Tees included. Useful for
evaluating non-compliant Tees.
CAESAR II Enhanced Branch Connection Modeler - Use FEA or ST-LLC-07-02 to apply more
applicable data to a CAESAR II input file than beam-theory and code defaults.
Automatically models FEA-evaluated SIFs and k's and creates a new CAESAR II model with the
modifications. This feature alone is worth the price of admission.
New Branch Connection SIFs and Ks - Display & compare SIF and stiffness factors from a
wide variety of notable sources. Also calculates stresses for various combinations of loads.
New Branch Connection SIF and Ks Screen.
Dynamics of Pipelines with a Finite Element Method.pdf
6.7 MB
Dynamics of Pipelines with a Finite Element Method
Forwarded from Deleted Account
کاتالوگ نفتا صنعت ناظران- 960425.pdf
19.6 MB
Mechanical Vibration Analysis (Design Approach 3, API 618, 5th Edition)
While pulsation forces can be reduced through the pulsation solution (as outlined in Section 2), the remaining
forces such as gas forces, crosshead forces, mass unbalance and couples, cannot be reduced – they must be
controlled through a mechanical vibration analysis. This analysis provides recommendations on piping supports,
package design, piping, clamps, skid, and other components.
forces such as gas forces, crosshead forces, mass unbalance and couples, cannot be reduced – they must be
controlled through a mechanical vibration analysis. This analysis provides recommendations on piping supports,
package design, piping, clamps, skid, and other components.
Mechanical vibration analysis is part of a Design Approach 3 of API 618, 5th edition. The scope includes calculating Mechanical Natural Frequencies (MNFs) throughout the system and a Forced Response Analysis to predict vibration and stress amplitudes, if necessary.
The goal of the analysis is to avoid mechanical resonance in the compressor/piping system. In many situations, and especially at higher order frequencies, it may be impossible to avoid resonance.
In this case, the engineer must “manage resonance”. Vibration will exist, but through detailed mechanical modeling and Forced Response Analysis techniques, the vibration consultant can predict whether a certain mode or location will have acceptable vibration and stress amplitudes.
In this case, the engineer must “manage resonance”. Vibration will exist, but through detailed mechanical modeling and Forced Response Analysis techniques, the vibration consultant can predict whether a certain mode or location will have acceptable vibration and stress amplitudes.
The mechanical analysis starts by developing an accurate computer model of the mechanical system. The model starts at the compressor (or cylinder); includes the pulsation control devices, scrubber, and main piping, and ends, as a minimum, at the second clamp away from the discharge/suction.