Multi-scale Modeling for the Stress Analysis of Acrylic Joints in a Hybrid Structure
- Resource Type
- Article
- Authors
- Yanfeng Zheng; Yaozhi Luo; Xian Xu; Chao Yang; Zhongyi Zhu; Yuekun Heng
- Source
- International Journal of STEEL STRUCTURES, 19(4), pp.1134-1145 Aug, 2019
- Subject
- 토목공학
- Language
- English
- ISSN
- 2093-6311
1598-2351
The central detector at the Jiangmen Underground Neutrino Observatory (JUNO) is a hybrid structure system consisting of an inner acrylic sphere and an outer stainless steel reticulated shell. The stress distributions of the acrylic joints must be accurately simulated to avoid “crazing”. To balance the accuracy and effi ciency of the stress analysis, a multi-scale modeling method using mixed-dimensional coupling is proposed. A framework and a generalized procedure are developed to instruct the modeling and analysis. A multi-scale model consisting of a single refi ned acrylic joint and equipped with simplifi ed joints is proposed and discussed. A comparison of the results using the multi-scale model with a cluster of 3 × 3 refi ned joints reveals that the diff erence is less than 5%, while the ratio of the computation resource cost and the time consumption is approximately only 1/7 and 1/5, respectively. The stress distributions of the acrylic joints in the central detector are obtained using the proposed multi-scale model.