000004988 001__ 4988
000004988 005__ 20141120140001.0
000004988 04107 $$aeng
000004988 046__ $$k2008-06-25
000004988 100__ $$aMohamed, Mejri
000004988 24500 $$aTIME-VARIANT ASSESSMENT FOR ADHESIVELY- BONDED ASSEMBLIES WITH NON LINEAR BEHAVIOUR IN NAVAL APPLICATIONS

000004988 24630 $$n4.$$pProceedings of the 4th International ASRANet Colloquium
000004988 260__ $$bASRANet Ltd., 2008
000004988 506__ $$arestricted
000004988 520__ $$2eng$$aA mechanical structure responds to loading in a manner which corresponds to the behaviour of material, to the load variations and to the effect of the assembling process. Recently, adhesively bonding becomes a wide used assembling process, it can allow a great productivity, simple design constraints and significant weight gain. Unfortunately, this technology is not completely mastered. Moreover, as naval field is concerned, this process presents some specificity. In fact, parameters like cure process, size of defects, joint adhesive thickness variations, size of parts to be assembled and non linear behaviour of the adhesive joint, are to be taken into account to assess the risks and to predict the service life. Under this assumption, time-independent reliability is insufficient to allow a pertinent related failure probability calculation. The solution of such problem can be given by the use the time dependent reliability tools. This passes through coupling structural reliability software evaluation with a non linear finite element code. This choice requires robust mechanical models.
 This study presents a time variant reliability approach based on the PHI2 method. In order to limit the numerical cost of simulations, cohesive-zone models are used. This choice allows to model damage at the interface and is well suited for bonded joints as the possible degradation zone is well defined. Different numerical results showing the feasibility of this approach for adhesively-bonded assemblies are presented. Moreover, results are presented in the case of a representative part of naval structure.

000004988 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004988 653__ $$a

000004988 7112_ $$a4th International ASRANet Colloquium$$cAthens (GR)$$d2008-06-25 / 2008-06-27$$gASRANet4
000004988 720__ $$aMohamed, Mejri$$iJean-Yves, Cognard
000004988 8560_ $$ffischerc@itam.cas.cz
000004988 8564_ $$s1065060$$uhttps://invenio.itam.cas.cz/record/4988/files/026_Mejri,_M.pdf$$yOriginal version of the author's contribution as presented on CD, paper No. 26.
000004988 962__ $$r4967
000004988 980__ $$aPAPER