Ductile Fracture Analysis of Steel Reinforcing Bar by Void Growth Model
YIN Yue
LI Fukang
GU Yimei
Abstract：Tension coupon tests were conducted on HRB400E steel reinforcing bars.Mechanical properties and constitutive relationship of the material were determined.Notched round bar specimens were designed according to general stress state of steel reinforcing bars.Monotonic tensile tests were conducted on the notched round bar specimens.The void growth model(VGM)was calibrated for the HRB400E steel reinforcing bars based on the test results and complementary finite element analysis.The material parameter of the VGM was determined to be η=2.03.Monotonic tensile tests were conducted on HRB400E steel reinforcing bars.Ductile fracture of the steel reinforcing bars was observed.The entire fracture processes of the steel reinforcing bars were numerically simulated with the VGM.The fracture processes obtained by the simulation are consistent with the test results.The fracture displacements predicted by the VGM agree well with the test results,with a maximum error within 10%.The applicability and accuracy of the VGM in ductile fracture analysis of steel reinforcing bars are thus verified.
Keywords：steel reinforcing barductile fracturevoid growth modelmechanical propertyfracture process
Publication Date：2025-12-30
Online Publishing Date：2026-01-08(First online date of this platform, not the publication date of the document)
Pages：10( 1291-1300 )