Paper Title:
A Study of the Dynamic Plane Strain Fracture Toughness of Concrete by SHPB
  Abstract

Concrete is a type of engineering composites which is widely used in military and civil structures. The static performance of concrete can not be used to estimate the variation of concrete under high strain rates under dynamic loads. By introducing the three point bending test under static and dynamic loads, the plane strain fracture toughness KIC and KId were measured. Using the application of experimental-numerical method a three-dimensional model has been established by FEM software Ansys/LS-DYNA, to carryout transient analysis, and the response curves of stress intensity factor-time through the opening displacement of fracture. Thus, with obtaining the cracking time by the method of strain-gauge, the dynamic plane strain fracture toughness KId can be determined. By comparing KIc and KId we could conclude the result which meant concrete was more liable to crack under dynamic load.

  Info
Periodical
Key Engineering Materials (Volumes 385-387)
Edited by
H.S. Lee, I.S. Yoon and M.H. Aliabadi
Pages
21-24
DOI
10.4028/www.scientific.net/KEM.385-387.21
Citation
J. Qu, G. P. Zou, "A Study of the Dynamic Plane Strain Fracture Toughness of Concrete by SHPB", Key Engineering Materials, Vols. 385-387, pp. 21-24, 2008
Online since
July 2008
Export
Price
$32.00
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