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国际多尺度计算工程期刊
影响因子: 1.016 5年影响因子: 1.194 SJR: 0.554 SNIP: 0.68 CiteScore™: 1.18

ISSN 打印: 1543-1649
ISSN 在线: 1940-4352

国际多尺度计算工程期刊

DOI: 10.1615/IntJMultCompEng.2013007162
pages 45-64

REDUCED-ORDER MULTISCALE-MULTIPHYSICS MODEL FOR HETEROGENEOUS MATERIALS

Zheng Yuan
Multiscale Design Systems, LLC 280 Park Avenue South New York, NY 10010, USA
Tao Jiang
Multiscale Design Systems LLC, 280 Park Ave, Apt 22M, New York, NY 10010, U.S.A.
Jacob Fish
Civil Engineering and Engineering Mechanics, Columbia University, New York, New York 10027, USA
Greg Morscher
Department of Mechanical Engineering, University of Akron, Akron, OH 44325, U.S.A.

ABSTRACT

A unified coupled multiscale mechano-diffusion-reaction model of environmental degradation of polymer matrix composite (PMC) and ceramic matrix composite (CMC) is developed. The unified multiscalemultiphysics model couples multiple physical processes at multiple scales, including oxygen diffusion, oxidation, and deformation. The salient feature of the unified multiscalemultiphysics model is its computational efficiency accomplished through a systematic model reduced carried out prior to nonlinear analysis. The model has been validated for PMR-15 reinforced carbon fiber composite and melt infiltrated CMC-NASA N24A material system.

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