scholarly journals Numerical Simulation of Fracture Behavior of Brittle Solids under I/III Loading

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Zhitao Zhang ◽  
Haijun Wang ◽  
Shuyang Yu
Keyword(s):  
Mixed Mode ◽  
Fracture Behavior ◽  
Mode I ◽  
Mixed Mode Fracture ◽  
Fracture Path ◽  
Model Calculations ◽  
Material Parameters ◽  
Brittle Solids ◽  
Actual Material ◽  
Good Agreement

This study used numerical analysis to carry out a large number of numerical model calculations based on a new semicircular bend (SCB) model. Instead of existing numerical computation methods (J-integral), the M-integral method was used to calculate the mixed mode fracture parameters (KI, KII, and KIII), investigate the influence of the geometry and material parameters on the fracture behavior under mixed mode I/III loading, and predict the fracture path. The results revealed that the limitations in the scope of the mixity parameter Me in the previous studies can be overcome to a certain extent. The range of Me was established under different Poisson ratios and can be used as a reference for actual material testing. The simulation path is in good agreement with the experimentally obtained fracture path, and the proposed method can be used to simulate the fracture path under mixed mode I/III loading.

NUMERICAL MODELING OF THE FRACTURE BEHAVIOR OF OPEN CELL FOAMS

2012 ◽  
Vol 01 (02) ◽  
pp. 1250019 ◽  
Author(s):  
Y. J. JIN ◽  
T. J. WANG
Keyword(s):  
Cross Section ◽  
Mixed Mode ◽  
Fracture Behavior ◽  
Crack Problem ◽  
Mode I ◽  
Mixed Mode Fracture ◽  
Open Cell ◽  
Crack Problems ◽  
Open Cell Foams ◽  
The Relationship

The objective of this work is to numerically study the individual and mixed mode fracture behavior of open-cell foams. Three-dimensional tetrakaidecahedron model is adopted and finite element method is employed in analysis. The overall elastic properties of open-cell foams are numerically obtained. Then, modes I, II, III and mixed mode I–II fracture behavior of open-cell foams are numerically predicted respectively, in which both solid/hollow and square/circular strut cross-sections are considered. It is seen that the relationship between the overall critical stress intensity factor and the relative density of foam obeys power law for individual crack problems. Effects of the shape and the topology of strut cross-section are discussed in detail. For mixed mode I–II crack problem, the relationship between KI/KIC and KII/KIIC is obtained and the effect of the shape of strut cross-section is discussed.

Mixed mode fracture behavior of short-particle engineered wood

2021 ◽  
pp. 103054
Author(s):  
Ehsan Torabi ◽  
Saeid Ghouli ◽  
Majid R. Ayatollahi ◽  
Liviu Marsavina
Keyword(s):  
Mixed Mode ◽  
Fracture Behavior ◽  
Mixed Mode Fracture ◽  
Mode Fracture ◽  
Engineered Wood

Mixed-mode fracture behavior of 3D-printed PLA with zigzag filling

2020 ◽  
pp. 1-8
Author(s):  
Ahmet Refah Torun ◽  
Ege Can Yıldız ◽  
Şeyma Helin Kaya ◽  
Naghdali Choupani
Keyword(s):  
Mixed Mode ◽  
Fracture Behavior ◽  
Mixed Mode Fracture ◽  
Mode Fracture ◽  
3D Printed

scholarly journals Analysis of Inclined Cracks in Thin-Walled Circular Tube under Mixed-Mode I + II Fracture

Proceedings ◽  
2018 ◽  
Vol 2 (8) ◽  
pp. 517 ◽  
Author(s):  
Boy Raymond Mabuza
Keyword(s):  
Fracture Mechanics ◽  
Mixed Mode ◽  
Crack Tip ◽  
Theoretical Models ◽  
Mode I ◽  
Mixed Mode Fracture ◽  
Shear Stresses ◽  
Inclined Crack ◽  
Mode Fracture ◽  
Thin Walled

This paper provides a study on mixed-mode fracture mechanics in thin-walled tube which is subjected to tension, shear and torsion loading. This type of loading causes an inclined crack to develop and generate a mixture of normal and shear stresses ahead of a crack tip. The stress state ahead of a crack tip is frequently based on mixed-mode type of interactions which designate the amplitude of the crack tip stresses. The analytical expressions for the stress intensity factors for mixed-mode I + II approach are presented. The Paris law for mixed-modes I + II has been discussed. Mixed-mode fracture mechanics is used with theoretical models to predict the path of crack growth when an inclined crack is subjected to a combination of mode I and mode II deformations. The torque at which crack propagation can be expected has been determined. The numerical calculations have been carried out by using MATLAB code. The results are good and could be useful for companies working with thin-walled circular tubes.

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