Adaptive multi-fidelity (AMF) modelling of progressive damage in notched composite laminates

被引：10

作者：

Leong, K. H. ^{[1
]}

Zhi, J. ^{[1
]}

Lee, H. P. ^{[1
]}

Tan, V. B. C. ^{[1
]}

Tay, T. E. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mech Engn, 21 Lower Kent Ridge Rd, Singapore 119077, Singapore

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2022年 / 154卷

关键词：

Multi-fidelity modelling; Progressive damage; Notched composites; Multi-scale modelling; SHELL FINITE-ELEMENT; FLOATING NODE METHOD; DELAMINATION-MIGRATION; MATRIX CRACKING; PART II; FAILURE; SIMULATION; FORMULATION; IMPLEMENTATION; PROPAGATION;

D O I：

10.1016/j.compositesa.2021.106790

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In recent years, high-fidelity simulations with discrete crack modelling techniques have been shown to accurately model the mechanics of progressive failure in composite laminates. However, these require high computational effort and are currently not practical beyond small coupon-sized specimens with a few tens of plies. In this paper, an adaptive multi-fidelity (AMF) modelling approach is proposed, wherein actively damaging areas are modelled with high-fidelity three-dimensional (3D) brick elements and discrete cracks, while dormant and inactive sites are modelled with lower-fidelity shell elements and smeared cracks. The transition criteria between the two levels of modelling are studied in order to preserve as much fidelity to the physics as necessary while improving computational efficiency. The results are benchmarked with that of high-fidelity simulations and experimental data of open-hole tension (OHT) of cross-ply and quasi-isotropic laminates in the literature.

引用

页数：20

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