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Titolo:
Simulation study on influences of damage-induced mechanical interactions, residual stresses and interfacial frictional shear stress on interfacial debonding in multifilamentary composites
Autore:
Ochiai, S; Kimura, S; Tanaka, M; Hojo, M;
Indirizzi:
Kyoto Univ, Grad Sch Engn, Mesoscop Mat Res Ctr, Sakyo Ku, Kyoto 6068501, Japan Kyoto Univ Kyoto Japan 6068501 t Res Ctr, Sakyo Ku, Kyoto 6068501, Japan
Titolo Testata:
MATERIALS TRANSACTIONS JIM
fascicolo: 1, volume: 42, anno: 2001,
pagine: 100 - 107
SICI:
0916-1821(200101)42:1<100:SSOIOD>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
UNIDIRECTIONAL COMPOSITES; MONTE-CARLO; NOTCH-TIP; LAG;
Keywords:
interfacial debonding; geometrical effect; unidirectional fiber-composite; mechanical interaction; residual stress; frictional shear stress; stress-strain curve;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Ochiai, S Kyoto Univ, Grad Sch Engn, Mesoscop Mat Res Ctr, Sakyo Ku, Kyoto6068501, Japan Kyoto Univ Kyoto Japan 6068501 Sakyo Ku, Kyoto 6068501, Japan
Citazione:
S. Ochiai et al., "Simulation study on influences of damage-induced mechanical interactions, residual stresses and interfacial frictional shear stress on interfacial debonding in multifilamentary composites", MATER T JIM, 42(1), 2001, pp. 100-107

Abstract

The overall interfacial debonding in unidirectional multifilamentary composites is affected by many factors such as damage(broken components (fiber and matrix) and interfacial debonding)-induced mechanical interactions, residual stress and frictional shear stress at debonded interface. In the present work, the influences of such factors on debonding behavior were studied by applying the simulation method, in which the modified shear lag analysiswas combined with the energy release rate criterion for debonding, to the various spatial distributions of cut-ends of components in a two-dimensional model composite. Main results are summarized as follows. (i) The progressof debonding is dependent on number, species and geometrical location of cut components. (ii) The overall debonding progresses more rapidly with increasing number of cut components due to the enhanced mechanical interactions. (iii) The debonding progresses intermittently, resulting in serrated stress-strain curves. (iv) When tensile and compressive residual stresses existin matrix and fiber, respectively, along the fiber axis, they act to enhance and retard the debonding when the matrix and fiber are cut, respectively. (v) The frictional shear stresses at debonded interface act to retard thedebonding and to raise the load carrying capacity of the composite in which debonding is saturated.

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Documento generato il 30/09/20 alle ore 09:43:18