An efficient approach to model response of submerged structures to blast loading
- D`Appolonia S.p.A., Genoa (Italy)
- Applied Research Associates, Inc., Vicksburg, MS (United States)
Blast loading on submerged offshore structures due to fishing activities and hostile attacks is a concern to Oil Operators. The dynamic response of structures interacting with the fluid has been extensively detailed in the past. An efficient state-of-the-art methodology is presented to evaluate the structural behavior of underwater nearby blasts to steel and concrete elastoplastic structures. Contact charges require analyses by means of hydrocodes and are not covered in this contribution. The water shock model and the structure-medium interaction model are treated in detail, while a general description is given for the two dimensional lumped mass incremental implicit beam element code. Due to its nature the code is particularly suited to analyze the response of one dimensional extended structures, but appropriate results have been found also in cases where three-dimensional effects are predominant. Results of the blast code include time histories of structural ductility, which can be interpreted as a damage indicator in the consequence analyses. The performance of the blast methodology is evaluated by comparing numerical results with an experimental test of underwater explosion against a stiffened plate.
- OSTI ID:
- 449722
- Report Number(s):
- CONF-9606279-; ISBN 0-7918-1490-4; TRN: IM9714%%279
- Resource Relation:
- Conference: 14. international conference on offshore mechanics arctic engineering (OMAE), Florence (Italy), 16-20 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 15. international conference on offshore mechanics and arctic engineering -- OMAE 1996. Volume 1, Part B: Offshore technology; Chakrabarti, S.K. [ed.] [Chicago Bridge and Iron Technical Services Co., Plainfield, IL (United States)]; Pontes, M.T. [ed.] [Inst. Nacional de Engenharia e Tecnologia Industrial, Lisbon (Portugal)]; Maeda, Hisaaki [ed.] [Univ. of Tokyo (Japan)]; Falzarano, J. [ed.] [Univ. of New Orleans, LA (United States)]; Schofield, P. [ed.] [W.S. Atkins, Surrey (United Kingdom)]; Morrison, D. [ed.] [Shell E and P Technology Co., Houston, TX (United States)]; PB: 484 p.
- Country of Publication:
- United States
- Language:
- English
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