期刊
COMPOSITES PART B-ENGINEERING
卷 233, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2021.109607
关键词
Parametrically Upscaled Continuum Damage; Mechanics (PUCDM); A; Yarn; B; Impact behavior; C; Micro-mechanics; C; Computational modeling
资金
- Center for Materials in Extreme Dynamic Environments (CMEDE) of the Army Research Laboratory [W911NF-12-2-0022]
This paper develops two-level parametrically-upscaled continuum damage mechanics models for woven composites. The models are thermodynamically consistent and integrate micro-/mesostructure to bridge length scales. The coefficients are determined using machine learning algorithms operating on a response database. The models are validated using ballistic impact experiments with good agreement.
This paper develops two-level parametrically-upscaled continuum damage mechanics (PUCDM) models for woven composites. The PUCDM models are thermodynamically consistent, micro-/mesostructure-integrated constitutive models that bridge length scales through explicit incorporation of lower-scale descriptors into coefficients. The level-1 PUCDM model features homogenized intra-yarn constitutive response of unidirectional composite SERVEs, while the level-2 PUCDM model reflects the upscaled effect of mesostructural RVE response. The functional forms of the coefficients are established through machine learning algorithms operating on a micro-/mesostructural response database. The highly efficient two-level PUCDM models are validated using ballistic impact experiments on S-2 glass/SC-15 epoxy woven composite plates with good agreement.
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