期刊
COMPOSITE STRUCTURES
卷 258, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2020.113178
关键词
CNT nanocomposites; Mori-Tanaka; Ductile damage; Waviness; Micromechanics
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIP) [2020R1A2B5B01001899]
- Institute of Engineering Research at Seoul National University
- National Research Foundation of Korea [2020R1A2B5B01001899] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A novel nonlinear micromechanics constitutive model is proposed to simulate elastoplastic and ductile damage behavior for wavy carbon nanotube nanocomposites, with modified Eshelby tensor and 3D FE micromechanics model developed for verification. The effects of CNT waviness under various parameters are closely investigated.
In this paper, a novel nonlinear micromechanics constitutive model is proposed to simulate elastoplastic and ductile damage behavior for wavy carbon nanotube (CNT) nanocomposites. A modified Eshelby tensor corresponding to wavy CNT is derived by integrating a rotational transformation of the effective composite stiffness tensor along the sinusoidal wavy CNT. The modified Eshelby tensor was utilized to update local and global strain concentration tensors, rebalancing local strains of inclusions and matrix caused by constantly changing algorithmic tangent operator of the matrix. They were integrated with a general framework for nonlinear MT homogenization. A 3D FE micromechanics model is developed to verify the feasibility and accuracy of the proposed model. Following the verification, effects of CNT waviness are closely investigated under various volume fractions, aspect ratios and loading directions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据