US 9,811,616 B2
Analysis of a structure modeled with intraply interface elements
Gerardo Pena, Seattle, WA (US); Jeffrey B. Gavin, Bellevue, WA (US); and Jeffrey P. Baucum, Sammamish, WA (US)
Assigned to THE BOEING COMPANY, Chicago, IL (US)
Filed by The Boeing Company, Huntington Beach, CA (US)
Filed on Oct. 1, 2014, as Appl. No. 14/503,960.
Prior Publication US 2016/0098503 A1, Apr. 7, 2016
Int. Cl. G06F 17/50 (2006.01)
CPC G06F 17/5018 (2013.01) [G06F 2217/44 (2013.01)] 21 Claims
OG exemplary drawing
1. An apparatus for implementation of a system for analyzing a structure having fibers embedded therein, the apparatus comprising a processor and a memory storing executable instructions that in response to execution by the processor cause the apparatus to at least:
produce a finite element model of the structure including one or more plies, including the apparatus being caused to at least:
perform a discretization of a digital model of the structure in which each ply of the one or more plies is represented by a mesh of finite elements aligned with a direction of uni-directional fibers embedded in the ply; and
add an intraply interface element between selected adjacent finite elements in the mesh of each ply to capture potential intraply failure modes, the intraply interface element being aligned with the direction of the uni-directional fibers embedded in the ply; and
perform a finite element method (FEM) failure analysis of the finite element model under a load, the FEM failure analysis producing an output that indicates an extent of any of the potential intraply failure modes that result from the finite element model under the load.