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Fracture Mechanics of Periodic Type-Ⅲ Cracks Emanating from a Nano-hole in One-dimensional Hexagonal Quasicrystals
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Ming Tong1, 2, Junhua Xiao1, 2, **
Chinese Journal of Solid Mechanics | 2024, 45(5) : 610 - 621
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Chinese Journal of Solid Mechanics | 2024, 45(5): 610-621
Research Paper
Fracture Mechanics of Periodic Type-Ⅲ Cracks Emanating from a Nano-hole in One-dimensional Hexagonal Quasicrystals
Full
Ming Tong1, 2, Junhua Xiao1, 2, **
Affiliations
  • 1Department of Engineering Mechanics, Yanshan University, Qinhuangdao, 066004
  • 2Hebei Key Laboratory of Mechanical Reliability for Heavy Equipments and Large Structures, Yanshan University, Qinhuangdao, 066004
Published: 2024-10-25 doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.030
Outline
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The material properties of quasicrystals are significantly affected by defects due to high brittleness. Understanding the fracture behavior of quasicrystals is crucial for material applications. In this paper, the fracture mechanics of one-dimensional hexagonal quasicrystals with periodic Type-III multiple cracks emanating from a nanoscale hole is investigated theoretically. Based on complex elasticity theory and the Gurtin-Murdoch surface elasticity theory, stress fields of a nano-hole with periodic multiple cracks, considering surface effects, are obtained using boundary value problems of analytic function theory and the conformal transformation technique. Analytical expressions for stress intensity factors and energy release rates of the phonon field and phase field at the crack tip under the same conditions are further derived. The effects of aperture size, number of periodic cracks, crack-length/aperture ratio, coupling coefficient between phonon field and phase field, and applied loads on dimensionless stress intensity factors and dimensionless energy release rate are discussed. Results indicate that the coupling coefficient, applied loads, and aperture size do not affect dimensionless stress intensity factors without surface effects. Larger aperture sizes show stronger size dependence on dimensionless stress intensity factors and dimensionless energy release rate when considering surface effects. An obvious coupling effect between the phonon field and the phase field is observed. The influence of the number of periodic cracks on dimensionless stress intensity factors and energy release rate is restricted by defect size. The effects of phonon field loads and phase field loads on dimensionless stress intensity factors and energy release rate differ. This work reveals the specific influence of surface effects on the fracture behavior of multi-cracks at the hole edge, offering significant academic insights into quasicrystal fracture mechanics.

surface effect  /  surface elasticity theory  /  one-dimensional hexagonal quasicrystals  /  nanoscale periodic crack  /  stress intensity factor  /  energy release rate
Ming Tong, Junhua Xiao. Fracture Mechanics of Periodic Type-Ⅲ Cracks Emanating from a Nano-hole in One-dimensional Hexagonal Quasicrystals[J]. Chinese Journal of Solid Mechanics, 2024 , 45 (5) : 610 -621 . DOI: 10.19636/j.cnki.cjsm42-1250/o3.2024.030
Year 2024 volume 45 Issue 5
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Article Info
doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.030
  • Receive Date:2024-06-20
  • Online Date:2026-04-01
  • Published:2024-10-25
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  • Received:2024-06-20
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Affiliations
    1Department of Engineering Mechanics, Yanshan University, Qinhuangdao, 066004
    2Hebei Key Laboratory of Mechanical Reliability for Heavy Equipments and Large Structures, Yanshan University, Qinhuangdao, 066004
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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