|Table of Contents|

Numerical Simulation Analysis of Circular Concrete-filled Steel Tube Specimen Under Lateral Impact(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2010年01期
Page:
89-96
Research Field:
Publishing date:
2010-03-20

Info

Title:
Numerical Simulation Analysis of Circular Concrete-filled Steel Tube Specimen Under Lateral Impact
Author(s):
QU Hai-yan1; 2;  LI Guo-qiang1; 3;  SUN Jian-yun4;  CHEN Su-wen1; 3
1. School of Civil Engineering, Tongji University, Shanghai 200092, China; 2. School of Engineering, Purdue University, West Lafayette IN47907, Indiana, USA; 3. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai
Keywords:
circular concrete-filled steel tube;  lateral impact function;  dynamic response;  numeric-al simulation;  LS-DYNA program
PACS:
TU375
DOI:
-
Abstract:
Firstly, the numerical simulation of a circular concrete-filled steel tube specimen under drop impact was carried out by using LS-DYNA program. Then, the dynamic response of a fixed-end concrete-filled steel tube specimen under lateral impact was analyzed. In the analysis, the material model, CONCRETE_DAMAGE_REL3, which could give a robust description of complex concrete laboratory response, was chosen to make concrete model. Steel was simulated by kinematical hardening model and the influence of strain rate was also taken into account for both concrete and steel. Common node was taken to simulate the interaction of the outer steel tube with the core concrete and the surface to surface contact model was used to model the contact function between impact body and the specimen. Finally, the dynamic response of a fixed-end concrete-filled steel tube specimen was compared and analyzed under different conditions. The influence of the impulse and kinetic energy of the impact body on the deformation of the specimen, the internal forces of the end cross section, the mid-span cross section of the specimen were obtained. The results show that the test results agree well with the numerical simulation results, and the simulation method used in the paper can simulate the dynamic response of a circular concrete-filled steel tube specimen under lateral impact load function.

References:

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Memo

Memo:
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Last Update: 2010-03-20