In order to investigate the effects of introducing non-linear material behaviour on the dynamic response of a topsides structure to explosion, a series of analyses has been carried out using a geometrically detailed finite element model. The work reported in this document builds upon that carried out during Phase 2 of the Strong VibrationWorking Group JIP, in which purely elastic models were used in predicting the strong vibration demands placed upon Safety Critical Elements. A series of nine analyses was undertaken to determine the influence of non-linear material modelling on secondary response spectra, generated at discrete locations throughout the topsides structure. Previously, direct scaling of peak spectral accelerations obtained by linear analysis had been used to obtain results for explosions of differing peak overpressure.
The Research Report Series are produced in Adobe Acrobat. The use of the latest version of the software is recommended which is available at the Adobe website via the link on this page.
Assistance in the use of Adobe Acrobat PDF files is available on our FAQs page.