FN Archimer Export Format
PT C
TI Inverse identification of the bending stiffness of a braided polyethylene twine subject to large deformation: application to the identification of the mesh opening rigidity of fishing nets.
BT 
AF MORVAN, Barthelemy
   BLES, G
   DUMERGUE, Nicolas
   PRIOUR, Daniel
AS 1:1,2;2:2;3:1;4:1;
FF 1:PDG-REM-RDT-LCSM;2:;3:PDG-REM-RDT-LCSM;4:PDG-REM-RDT-LCSM;
C1 IFREMER, Plouzane, France
   ENSTA Bretagne FRE CNRS 3744 IRDL F-29200 Brest, France
C2 IFREMER, FRANCE
   ENSTA BRETAGNE, FRANCE
SI BREST
SE PDG-REM-RDT-LCSM
UR https://archimer.ifremer.fr/doc/00348/45899/45581.pdf
LA English
DT Proceedings paper
DE ;Numerical model;experiments;braided twine;mesh opening rigidity;large deformation.
AB The evaluation of the mesh opening stiffness of fishing nets is an important issue in assessing the selectivity of trawls. It appeared that a larger bending rigidity of twines decreases the mesh opening and could reduce the escapement of fish. Nevertheless, netting structure is complex. A netting is made up of braided twines made of polyethylene or polyamide. These twines are tied with non-symmetrical knots. Thus, these assemblies develop contact-friction interactions. Moreover, the netting can be subject to large deformation. In this study, we investigate the responses of netting samples to different types of solicitations. Samples are loaded and unloaded with creep and relaxation stages, with different boundary conditions. Then, two models have been developed: an analytical model and a finite element model. The last one was used to assess, with an inverse identification algorithm, the bending stiffness of twines. In this paper, experimental results and a model for netting structures made up of braided twines are presented. During dry forming of a composite, for example, the matrix is not present or not active, and relative sliding can occur between constitutive fibres. So an accurate modelling of the mechanical behaviour of fibrous material is necessary. This study offers experimental data which could permit to improve current models of contact-friction interactions [4], to validate models for large deformation analysis of fibrous materials [1] on a new experimental case, then to improve the evaluation of the mesh opening stiffness of a fishing net
PY 2016
CT Eccomas 2016 Proceedings. M. Papadrakakis, V. Papadopoulos, G. Stefanou, V. Plevris (eds.) MS 706 - Modeling of fiber-based structures - textiles and textile reinforced composites. n°9824, pp.1-19
DI 10.7712/100016.1938.9824
ID 45899
ER

EF