Why Do I Need FEA?

The ASME Code provides design rules for nozzles subject to pressure. It also requires consideration of external loads such as those imposed by attached piping. The Code does not provide rules for external loads so the methods from WRC-107, WRC-297 and more recently WRC-537 are used. WRC-107, WRC-297 and WRC-537 are valid for many, but not all, nozzle geometries encountered in practice. For example, the WRC methods do not cover nozzles on blind flanges or flat heads.  API 660 heat exchangers with nozzles on bolted covers can, however, be handled with FEA. In general, our pressure vessel FEA can be used to meet the requirements of the Code when nozzles and attachments exceed the limitations of WRC-107 \ WRC-297 \ WRC-537 or when more accurate results are desired.

  • The TEMA 9th Ed. requires FEA when calculating flexible shell element (FSE) spring rates and stresses. Our heat exchanger calculation includes FSE FEA and performs this analysis automatically.

  • Codeware’s FEA implementation is more accurate and usually less conservative than the methods of WRC-107, WRC-297 or WRC-537. Our FEA engine has been licensed from Paulin Research Group (PRG), a leading authority in the field of pressure vessel and piping stress analysis. PRG’s FEA analysis has been used successfully by industry for decades and is unique in that it has been verified by extensive burst and strain gauge tests.

  • Performing FEA with Codeware products is very straight forward. Details input are automatically transferred to the FEA engine and the FEA results are included in the calculation report.

  • COMPRESS and INSPECT include FEA as standard equipment. Competitors either charge extra for this feature or do not offer it at all.

  • COMPRESS and INSPECT 2017 add additional pressure vessel FEA functionality including FEA of clips, lugs, support saddles and structural attachments.

Finite Element Analysis on Nozzles Video
COMPRESS and INSPECT include nozzle finite element analysis (FEA) at no additional charge
COMPRESS and INSPECT 2017 add more pressure vessel FEA including clips, lugs, support saddles and structural attachments

Additional COMPRESS Highlights