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A two scale finite element approach for the fracture and damage analysis of composite materials

Kreikemeier, Janko and Gabbert , Ulrich (2010) A two scale finite element approach for the fracture and damage analysis of composite materials. 23rd International Workshop Research in Mechanics of Composites, 29.11.2010 - 01.12.2010, Bad Herrenalb, Deutschland.

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Abstract

The presentation deals with a two scale finite element model which was developed to describe and analyse the anisotropic damage state of fibre reinforced composite materials. The thermodynamical consistent formulation is based on the standard continuum mechanics framework of finite deformations. The damage onset is measured by means of the maximum principal stress criterion of the true Cauchy stress tensor. The corresponding eigendirection is used as the crack propagation direction. The coupling of the macro scale and the micro scale is carried out by means of the UMAT utility of the commercial finite element system Abaqus. The properties of the viscous regularization, which is necessary to ensure the well posedness of the underlying boundary value problem will be highlighted before further examples show the applicability of the two scale approach.

Document Type:Conference or Workshop Item (Speech)
Title:A two scale finite element approach for the fracture and damage analysis of composite materials
Authors:
AuthorsInstitution or Email of Authors
Kreikemeier, JankoUNSPECIFIED
Gabbert , UlrichInstitut für Mechanik, Universität Magdeburg
Date:November 2010
Refereed publication:Yes
In ISI Web of Science:No
Keywords:Multi Scale FEA, Damage Propagation
Event Title:23rd International Workshop Research in Mechanics of Composites
Event Location:Bad Herrenalb, Deutschland
Event Type:international Conference
Event Dates:29.11.2010 - 01.12.2010
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Structural Mechanics
Deposited By: Doris Ries
Deposited On:06 Dec 2010 11:02
Last Modified:06 Dec 2010 11:02

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