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A New Damage Model of Microvoids
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Jie DONG1, 2, Yong-Chi LI2, Xue-Dong CHEN1
Chinese Journal of High Pressure Physics | 2007, 21(4) : 414 - 418
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收藏切换
Chinese Journal of High Pressure Physics | 2007, 21(4): 414-418
A New Damage Model of Microvoids
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Jie DONG1, 2, Yong-Chi LI2, Xue-Dong CHEN1
Affiliations
  • 1.National Technology Research Center on Pressure Vessel and Pipe Line Safety Engineering, Hefei 230031, China
  • 2.Department of Mechanics and Mechanical Engineering of USTC, Hefei 230027, China
Published: 2007-12-05
Outline
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With introducing the concept of the number of micro-damage in unit volume, macro damage parameter and microvoids volume are unified together, and a new kind of quadratic micro-voids damage evolution equation is acquired. The effect of inertia is considered during the expansion of voids. The expansion of surface and inertia will play a dominant role during the different stage of expansion of voids respectively. After taking the impact experiment of 921 steel as reference and comparing the curves of free surface velocity, the model is proved to be correct since their results are matched well.

number of micro-damage inertia  /  unification of macro and micro scale  /  microvoids damage
董杰, 李永池, 陈学东. 一种新型微孔洞损伤模型. 高压物理学报, 2007 , 21 (4) : 414 -418 .
Jie DONG, Yong-Chi LI, Xue-Dong CHEN. A New Damage Model of Microvoids[J]. Chinese Journal of High Pressure Physics, 2007 , 21 (4) : 414 -418 .
Year 2007 volume 21 Issue 4
24
8
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Article Info
  • Receive Date:2007-01-26
  • Online Date:2026-11-01
  • Published:2007-12-05
Article Data
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History
  • Received:2007-01-26
  • Revised:2007-04-24
Funding
Affiliations
    1.National Technology Research Center on Pressure Vessel and Pipe Line Safety Engineering, Hefei 230031, China
    2.Department of Mechanics and Mechanical Engineering of USTC, Hefei 230027, China
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表12种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
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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