• Title/Summary/Keyword: Discontinuously-Reinforcement Composites

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Analysis of Damage Mechanism for Optimum Design in Discontinuously-Reinforced Composites (불균질입자강화 복합재료의 최적설계를 위한 손상메커니즘 해석)

  • 조영태;조의일
    • Transactions of the Korean Society of Machine Tool Engineers
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    • v.13 no.4
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    • pp.106-112
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    • 2004
  • In particle or short-fiber reinforced composites, cracking or debonding of the reinforcements cause a significant damage mode because the damaged reinforcements lose load carrying capacity. The average stress in the inhomogeneity represents its load carrying capacity, and the difference between the average stresses of the intact and broken inhomogeneities indicates the loss of load carrying capacity due to cracking damage. The composite in damage process contains intact and broken reinforcements in a matrix. An incremental constitutive relation of discontinuously-reinforced composites including the progressive cracking damage of the reinforcements have been developed based on the Eshelby's equivalent inclusion method and Mori-Tanaka's mean field concept. Influence of the cracking damage on the stress-strain response of the composites is demonstrated.

Incremental Theory of Reinforcement Damage in Discontinuously-Reinforced Composite (분산형 복합재료의 강화재 손상 증분형 이론)

  • 김홍건
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2000.05a
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    • pp.122-126
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    • 2000
  • In particle or short-fiber reinforced composites cracking of the reinforcements is a significant damage mode because the broken reinformcements lose load carrying capacity . The average stress in the inhomogeneity represents its load carrying capacity and the difference between the average stresses of the intact and broken inhomogeneities indicates the loss of load carrying capacity due to cracking damage. The composite in damage process contains intact and broken reinforcements in a matrix, An incremental constitutive relation of particle or short-fiber reinforced composites including the progressive cracking damage of the reinforcements have been developed based on the Eshelby's equivalent inclusion method and Mori-Tanaka's mean field concept. influence of the cracking damage on the Eshelby's equivalent inclusion method and Mori-Tanaka's mean field concept. Influence of the cracking damage on the stress-strain response of the composites is demonstrated.

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