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A novel hybrid finite element model for modeling anisotropic composites

Cao, Changyong; Yu, Aibing; Qin, Qing Hua

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In this paper we proposed a novel hybrid Trefffz-type finite element method to simulate mechanical behavior of anisotropic composite materials based on its associated Green's functions. The hybrid method is formulated based on two independent assumptions: intra-element field covering the element domain and inter-element frame field along the element boundary. A modified functional, which satisfies the governing equation, boundary and continuity conditions between elements, is proposed to derive...[Show more]

dc.contributor.authorCao, Changyong
dc.contributor.authorYu, Aibing
dc.contributor.authorQin, Qing Hua
dc.date.accessioned2015-12-10T23:34:54Z
dc.identifier.issn0168-874X
dc.identifier.urihttp://hdl.handle.net/1885/69622
dc.description.abstractIn this paper we proposed a novel hybrid Trefffz-type finite element method to simulate mechanical behavior of anisotropic composite materials based on its associated Green's functions. The hybrid method is formulated based on two independent assumptions: intra-element field covering the element domain and inter-element frame field along the element boundary. A modified functional, which satisfies the governing equation, boundary and continuity conditions between elements, is proposed to derive the element stiffness equation. In this work, the foundational solutions of anisotropic materials in terms of the elegant and powerful Stroh formalism are employed to approximate the intra-element displacement field of the elements, while the polynomial shape functions used in traditional FEM are utilized to interpolate the frame field. Several numerical examples are presented to demonstrate the performance of the new method by comparing with the analytical or numerical results from literatures and ABAQUS. Numerical results show that the proposed method is accurate and efficient in modeling anisotropic composites materials in contrast to traditional FEM, and it is potential to be further extended to analyze composite laminates easily.
dc.publisherElsevier
dc.sourceFinite Elements in Analysis and Design
dc.subjectKeywords: Anisotropic; Anisotropic composites; Anisotropic material; Composite laminate; Continuity conditions; Displacement field; Governing equations; Hybrid finite elements; Hybrid method; Mechanical behavior; Numerical example; Numerical results; Shape function Anisotropic; Composite materials; Green's function; Hybrid finite element; Stroh formalism
dc.titleA novel hybrid finite element model for modeling anisotropic composites
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume64
dc.date.issued2012
local.identifier.absfor091299 - Materials Engineering not elsewhere classified
local.identifier.absfor091300 - MECHANICAL ENGINEERING
local.identifier.ariespublicationf5625xPUB2075
local.type.statusPublished Version
local.contributor.affiliationCao, Changyong, College of Engineering and Computer Science, ANU
local.contributor.affiliationYu, Aibing, University of New South Wales
local.contributor.affiliationQin, Qing Hua, College of Engineering and Computer Science, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage36
local.bibliographicCitation.lastpage47
local.identifier.doi10.1016/j.finel.2012.09.007
dc.date.updated2016-02-24T08:53:52Z
local.identifier.scopusID2-s2.0-84867635955
local.identifier.thomsonID000311638200004
CollectionsANU Research Publications

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