Fracture Assessment of Notched Bainitic Functionally Graded Steels under Mixed Mode (I + II) Loading

被引：0
作者：
H. Salavati
Y. Alizadeh
F. Berto
机构：
[1] Shahid Bahonar University of Kerman,
[2] Amirkabir University of Technology,undefined
[3] University of Padova,undefined
来源：
Physical Mesomechanics | 2015年 / 18卷
关键词：
functionally graded steel; strain energy density; critical fracture load; notch radius; notch depth; notch opening angle;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The averaged value of the strain-energy density over a well-defined volume is one of the powerful criteria to assess the static strength of U- and V-notched specimens. This contribution is the first to investigate the effect of notch parameters (notch radius, notch depth and notch opening angle) for fracture assessment of specimens weakened by blunt V-notches made of bainitic functionally graded steels under mixed mode loading (I + II). A numerical method has been used to evaluate the boundary of the control volume, the mean value of the strain-energy density and the critical fracture load. Different values of the notch radius (0.5, 1.0, 1.5 and 2.0 mm), notch depth (5.5, 6.0 and 6.5 mm), notch opening angle (30°, 60° and 90°) and distance of the applied load from the notch bisector line (5 and 10 mm) have been considered. Moreover, this contribution shows that the mean value of the strain-energy density over the control volume can also be accurately determined from a coarse mesh for functionally graded steels.
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页码：307 / 325
页数：18
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共 165 条
  • [21] Marsavina L.(2013)A Review on Coupled Modes in V-Notched Plates of Finite Thickness: A Generalized Approach to the Problem Phys. Mesomech. 16 378-390
  • [22] Linul E.(2012)The Effect of the Boundary Conditions on In-Plane and Out-of-Plane Stress Field in Three Dimensional Plates Weakened by Free-Clamped V-Notches Phys. Mesomech. 15 26-36
  • [23] Voiconi T.(1974)Fracture Mechanics Applied to Engineering Problems—Strain Energy Density Fracture Criterion Eng. Fract. Mech. 6 361-386
  • [24] Sadowski T.(2001)A Finite-Volume-Energy Based Approach to Predict the Static and Fatigue Behaviour of Components with Sharp V-Shaped Notches Int. J. Fract. 112 275-298
  • [25] Marsavina L.(2005)Some Expressions for the Strain Energy in a Finite Volume Surrounding the Root of Blunt V-Notches Int. J. Fract. 135 161-185
  • [26] Constantinescu D.M.(2007)Fracture Assessment of U-Notches under Mixed Mode Loading: Two Procedures Based on the “Equivalent Local Mode I” Concept Int. J. Fract. 148 415-433
  • [27] Linul E.(2013)Brittle Failure of Inclined Key-Hole Notches in Isostatic Graphite under In-Plane Mixed Mode Loading Fatigue Fract. Eng. Mater. Struct. 36 942-955
  • [28] Voiconi T.(2013)Fracture Behaviour of Notched Round Bars Made of PMMA Subjected to Torsion at -60°C Eng. Fract. Mech. 102 271-287
  • [29] Apostol D.A.(2012)Brittle Fracture of U-Notched Graphite Plates under Mixed Mode Loading Mater. Des. 41 421-432
  • [30] Sadowski T.(2011)Fracture Assessment of U-Notches under Three Point Bending by Means of Local Energy Density Mater. Des. 32 822-830
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