DOI QR코드

DOI QR Code

Research on damage of 3D random aggregate concrete model under ultrasonic dynamic loading

  • Wang, Lixiao (School of Mechanical Engineering, Changshu Institution of Technology) ;
  • Chen, Qidong (School of Mechanical Engineering, Changshu Institution of Technology) ;
  • Liu, Xin (School of Mechanical Engineering, Changshu Institution of Technology) ;
  • Zhang, Bin (School of Mechanical Engineering, Changshu Institution of Technology) ;
  • Shen, Yichen (School of Mechanics, Soochow University)
  • 투고 : 2019.11.26
  • 심사 : 2020.05.18
  • 발행 : 2020.07.25

초록

Concrete are the most widely used manmade materials for infrastructure construction across the world. These constructions gradually aged and damaged due to long-term use. However, there does not exist an efficient concrete recycling method with low energy consumption. In this study, concrete was regarded as a heterogeneous material composed of coarse aggregate and cement mortar. And the failure mode of concrete under ultrasonic dynamic loading was investigated by finite element (FE) analysis. Simultaneously, a 3D random aggregate concrete model was programmed by APDL and imported into ABAQUS software, and the damage plastic constitutive model was applied to each phase to study the damage law of concrete under dynamic loading. Meanwhile, the dynamic damage process of concrete was numerically simulated, which observed ultrasonic propagating and the concrete crushing behavior. Finally, the FE simulation considering the influence of different aggregate volume and aggregate size was carried out to illustrate the damage level of concrete.

키워드

과제정보

The research described in this paper was financially supported by the National Natural Science Foundation of China (51705037).

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