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Multi-scale Modeling for the Stress Analysis of Acrylic Joints in a Hybrid Structure

  • Yanfeng Zheng
  • Yaozhi Luo
  • Xian XuEmail author
  • Chao Yang
  • Zhongyi Zhu
  • Yuekun Heng
Article
  • 35 Downloads

Abstract

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 efficiency 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 refined acrylic joint and equipped with simplified joints is proposed and discussed. A comparison of the results using the multi-scale model with a cluster of 3 × 3 refined joints reveals that the difference 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.

Keywords

Hybrid structure system Acrylic joint Stress analysis Multi-scale modeling Mixed-dimensional coupling 

Notes

Acknowledgements

This work is supported by the National Key Research and Development Program of China (Grant No. 2016YFC0800200) and the National Natural Science Foundation of China (Grant No. 51578494).

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Copyright information

© Korean Society of Steel Construction 2018

Authors and Affiliations

  • Yanfeng Zheng
    • 1
  • Yaozhi Luo
    • 2
  • Xian Xu
    • 3
    Email author
  • Chao Yang
    • 1
  • Zhongyi Zhu
    • 4
  • Yuekun Heng
    • 5
  1. 1.A-823 Anzhong Building, Department of Civil EngineeringZhejiang UniversityHangzhouChina
  2. 2.A-821 Anzhong Building, Department of Civil EngineeringZhejiang UniversityHangzhouChina
  3. 3.A-725 Anzhong Building, Department of Civil EngineeringZhejiang UniversityHangzhouChina
  4. 4.Beijing Institute of Architectural Design (Group) Co., LtdBeijingChina
  5. 5.Central Detector GroupInstitute of High Energy Physics (IHEP)BeijingChina

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