چكيده لاتين :
A combined finite/ discrete element method is presented for modelling
composite specimens subjeded to dynamic/impact loadings. The main task
is set on developing an algorithm for simulation of potential bonding and
debonding/delarnination phenomena during impact or qenera! dynamic loading
conditions. In addition. full fracture lIיf1alysis also be pcrjormed. The proposed
approach. adopts a general node to face nonlinear jrictiouo) contact algorithm
to enforce bonding/debonding constraints btJwern composite plies. The method
i8 also capable of analyzinq progressive [racturc and .!jYtgnwntrdion beluunour as
well as potential post cracking interactions caused [ry the newly created r:raek
sides and scqnicn:«. A loud rettieslusu; teciuiiqne is adopted every time a new
crack is [ormed. uihil»: an onerall remeshing is performed aruitinu: a certain
criterion of (:,(7"OT estimation is violated. The special local retnesliitu; tecluuque
is de.,i.i]ncd to qcoinetricallsj model ILTI individurd crack by sp/dting the dement.
sepmnting the failed node. crcatin.1f tieu. nodes and dividing the nciqhbornu;
clemenis to preserne the eornpatibllity corulitions. The same procedure יis capable
oj modelling opplieation of jibrc rein/o1"(;((1 !JOlyllUT (FRP) layerיs to other
en.gineering structures in order to unprorc their fie:rible bciuiuior in static «nd
dimamu: loadinq contlitiou».
