EP 3930989 A1 20220105 - METHOD FOR CREATING A COMPONENT FROM A WOVEN MATERIAL TAKING THE OUT-OF-REGISTER INTO ACCOUNT
Title (en)
METHOD FOR CREATING A COMPONENT FROM A WOVEN MATERIAL TAKING THE OUT-OF-REGISTER INTO ACCOUNT
Title (de)
VERFAHREN ZUR ERZEUGUNG EINES TEILS AUS EINEM GEWEBTEN MATERIAL UNTER BERÜCKSICHTIGUNG DES WINKELS AUSSERHALB DES REGISTERS
Title (fr)
PROCÉDÉ DE RÉALISATION D'UNE PIÈCE EN MATÉRIAU TISSÉ TENANT COMPTE DU DÉCADRAGE
Publication
Application
Priority
- FR 1902083 A 20190228
- FR 2020050399 W 20200228
Abstract (en)
[origin: WO2020174198A1] Method for creating a component (10) from a preform (12) comprising a network (18) of fibres (16a, 16b) having, after the shaping of the preform, an out-of-register angle, comprising the following steps: - defining an orthogonal local frame of reference with respect to the network before the shaping of the preform, - defining a natural local frame of reference with respect to the network after the shaping of the preform, - defining a linked frame of reference with respect to the network, - expressing a tensor of the stiffnesses of the woven composite material in said natural local frame of reference, - constructing a tensor of the deformations in the orthogonal local frame of reference, - expressing, in the linked frame of reference, the tensor of the deformations constructed beforehand in the orthogonal local frame of reference, - calculating a tensor of the stresses in the natural local frame of reference on the basis of the behaviour law that is dependent on the stiffnesses tensor expressed in the natural local frame of reference and on the deformation tensor expressed in the linked frame of reference, - expressing, in the orthogonal local frame of reference, the stresses tensor calculated beforehand using the behaviour law, - expressing the stiffnesses tensor, already expressed in the natural local frame of reference, in the orthogonal local frame of reference, - constructing a tangent operator, for a numerical solution using the finite-element method comprising components which are equal to those of the stiffness tensor previously expressed in the orthogonal local frame of reference, - establishing an optimized configuration for the network of fibres (16a, 16b) on the basis of at least the stresses tensor expressed in the orthogonal local frame of reference before the shaping of the preform, and - locally adapting the fibres (16a, 16b) of the network (18) before impregnating said network.
IPC 8 full level
B29C 70/22 (2006.01)
CPC (source: EP US)
B29C 70/222 (2013.01 - EP US); G06F 30/10 (2020.01 - US)
Citation (search report)
See references of WO 2020174198A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2020174198 A1 20200903; CN 113573874 A 20211029; CN 113573874 B 20230725; EP 3930989 A1 20220105; FR 3093297 A1 20200904; FR 3093297 B1 20220812; US 2022134683 A1 20220505
DOCDB simple family (application)
FR 2020050399 W 20200228; CN 202080021964 A 20200228; EP 20721099 A 20200228; FR 1902083 A 20190228; US 202017433490 A 20200228