Structural Engineering and Mechanics

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Influence of neck width on the performance of ADAS device with diamond-shaped hole plates

  • Wu, Yingxiong (College of Civil Engineering, Fuzhou University) ;
  • Lu, Jianfeng (Department of Civil and Environmental Engineering, Harbin Institute of Technology (Shenzhen)) ;
  • Chen, Yun (Nantong LANKE Damping Technology Co., Ltd.)
  • Received : 2019.06.12
  • Accepted : 2019.11.12
  • Published : 2020.04.10
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Abstract

Metallic energy-dissipation dampers are widely used in structures. They are comprised of an added damping and stiffness (ADAS) device with many parallel, diamond-shaped hole plates, the neck width of which is an important parameter. However, no studies have analyzed the neck width's influence on the ADAS device's performance. This study aims to better understand that influence by conducting a pseudo-static test on ADAS, with three different neck widths, and performing finite element analysis (FEA) models. Based on the FEA results and mechanical theory, a design neck width range was proposed. The results showed that when the neck width was within the specified range, the diamond-shaped hole plate achieved an ideal yield state with minimal stress concentration, where the ADAS had an optimal energy dissipation performance and the brittle shear fracture on the neck was avoided. The theoretical values of the ADAS yield loads were in good agreement with the test values. While the theoretical value of the elastic stiffness was lower than the test value, the discrepancy could be reduced with the proposed modified coefficient.

Keywords

Acknowledgement

Supported by : Natural Science Foundation of China

The research described in this paper was financially supported by the Natural Science Foundation of China (grant nos 51778149).

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