TY - CHAP
T1 - Inelastic microbuckling of composites by wave-buckling analogy
AU - Gilat, Rivka
AU - Aboudi, Jacob
N1 - Publisher Copyright:
© ISTE Ltd 2021.
PY - 2021/6/11
Y1 - 2021/6/11
N2 - Microbuckling in fiber-reinforced elastic composite materials, associated with the composite compressive strength, has been extensively studied over the years. A two-dimensional problem of a periodically layered bi-material, in which the stiff and soft layers represent the fibers and matrix, respectively, has been frequently used to model the composite. The wave-buckling analogy is used for the analysis of inelastic bifurcation microbuckling in layered composites. To this end, the instantaneous stiffness tensor of the inelastic layer is used in the bifurcation buckling analysis. Inelastic material behavior reveals softening, which can be viewed as the reduction of the material mechanical properties. Plasticity is observed to decrease the volume fraction at which the transition occurs from short-wave buckling to long-wave buckling. A solution was obtained by using the analogy between the buckling and wave propagation problems, in conjunction with an incremental approach, while adopting an elastic-viscoplastic constitutive law indicating plasticity reduction of all the involved moduli.
AB - Microbuckling in fiber-reinforced elastic composite materials, associated with the composite compressive strength, has been extensively studied over the years. A two-dimensional problem of a periodically layered bi-material, in which the stiff and soft layers represent the fibers and matrix, respectively, has been frequently used to model the composite. The wave-buckling analogy is used for the analysis of inelastic bifurcation microbuckling in layered composites. To this end, the instantaneous stiffness tensor of the inelastic layer is used in the bifurcation buckling analysis. Inelastic material behavior reveals softening, which can be viewed as the reduction of the material mechanical properties. Plasticity is observed to decrease the volume fraction at which the transition occurs from short-wave buckling to long-wave buckling. A solution was obtained by using the analogy between the buckling and wave propagation problems, in conjunction with an incremental approach, while adopting an elastic-viscoplastic constitutive law indicating plasticity reduction of all the involved moduli.
KW - Fiber-reinforced elastic composite materials
KW - Inelastic bifurcation microbuckling
KW - Plasticity
KW - Wave propagation
KW - Wave propagation problems
KW - Wave-buckling analogy
UR - http://www.scopus.com/inward/record.url?scp=85148481825&partnerID=8YFLogxK
U2 - 10.1002/9781119831891.ch7
DO - 10.1002/9781119831891.ch7
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AN - SCOPUS:85148481825
SN - 9781786307149
SP - 145
EP - 157
BT - Modern Trends in Structural and Solid Mechanics 1
ER -