000005004 001__ 5004
000005004 005__ 20141120140003.0
000005004 04107 $$aeng
000005004 046__ $$k2008-06-25
000005004 100__ $$aMazarakos, D.
000005004 24500 $$aFAILURE EVENT ANALYSIS AND OPTIMIZATION OF A SUBMERGED UNDERWATER CRITICAL STRUCTURE AGAINST NON DETERMINISTIC CURRENT LOADING CONDITIONS WITH THE USE OF THE FINITE ELEMENT METHOD

000005004 24630 $$n4.$$pProceedings of the 4th International ASRANet Colloquium
000005004 260__ $$bASRANet Ltd., 2008
000005004 506__ $$arestricted
000005004 520__ $$2eng$$aThe survivability of critical underwater structures against probabilistic loading and a Failure Event will be addressed in this paper. The structure under analysis is a double inverted funnel designed for the recuperation of lighter than water pollutants from shipwrecks. The structure is comprised of a pollutant recuperation tank, a large tube and a dome covering the shipwreck. The whole structure is anchored on the seabed by a number of anchor lines, keeping it in a pre-stressed condition.
 The present paper addresses the Failure Event Analysis of this underwater structure under current loading. Initially, a first step in structural analysis is presented taking into account loading conditions in a supposed area of deployment and initial dimensions for the anchor lines are derived. Following the Finite Element analysis of the submerged structure in order to meet imposed strength requirements, the failure of critical components (mainly anchoring) is considered. The current loads are divided into two components: tidal (deterministic) and wind-induced (probabilistic), introducing the non-deterministic aspect of the analysis.
 The structural behaviour of the submerged structure is evaluated in order to determine survivability of the pollutant recuperation tank against the aforementioned failure. Design iterations are then conducted in order to assure structure survivability against environmental conditions, after and during the failure of the critical component (anchor line).
 The structural analysis is conducted using commercial Finite Element software (MSc Nastran/Patran).

000005004 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000005004 653__ $$a

000005004 7112_ $$a4th International ASRANet Colloquium$$cAthens (GR)$$d2008-06-25 / 2008-06-27$$gASRANet4
000005004 720__ $$aMazarakos, D.$$iDerdas, C.$$iKostopoulos, V.$$iAndritsos, F.
000005004 8560_ $$ffischerc@itam.cas.cz
000005004 8564_ $$s1063545$$uhttps://invenio.itam.cas.cz/record/5004/files/043_Kostopoulos,_V.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 43.
000005004 962__ $$r4967
000005004 980__ $$aPAPER