Influence of Neutron Irradiation on Energy Accumulation and Dissipation during Plastic Flow and Hardening of Metallic Polycrystals

2010 ◽  
pp. 238-238-14
Author(s):  
D. A. Toktogulova ◽  
M. N. Gusev ◽  
O. P. Maksimkin ◽  
F. A. Garner
Keyword(s):  
Plastic Flow ◽  
Neutron Irradiation ◽  
Energy Accumulation ◽  
Energy Accumulation And Dissipation

Influence of Neutron Irradiation on Energy Accumulation and Dissipation during Plastic Flow and Hardening of Metallic Polycrystals

2010 ◽  
Vol 7 (1) ◽  
pp. 102175 ◽  
Author(s):  
D. A. Toktogulova ◽  
M. N. Gusev ◽  
O. P. Maksimkin ◽  
F. A. Garner ◽  
Jeremy T. Busby ◽  
...  
Keyword(s):  
Plastic Flow ◽  
Neutron Irradiation ◽  
Energy Accumulation ◽  
Energy Accumulation And Dissipation

scholarly journals Energy Accumulation and Dissipation of Coal with Preopening under Uniaxial Loading

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Xin Wei ◽  
Hao Hu ◽  
Yang Li
Keyword(s):  
Simulation Method ◽  
Particle Simulation ◽  
Energy Evolution ◽  
Coal Specimen ◽  
Energy Accumulation ◽  
Evolution Characteristics ◽  
Optimal Value ◽  
Storage Limit ◽  
Particle Simulation Method ◽  
Energy Accumulation And Dissipation

Energy accumulation and dissipation play an important role during the entire process of rock failure. Some flaws, such as preexisting holes, will influence energy accumulation and dissipation. In order to investigate the energy evolution of coal specimen with preexisting holes under uniaxial compression through numerical approaches, the particle simulation method was used in numerical simulations. In this paper, the energy evolution of coal specimen was theoretically analyzed, and the influence of different hole arrangement, such as diameter, spacing, angle, and number, on the evolution characteristics of energy was also discussed. At the same time, the arrangement of the artificial boreholes for preventing the rockburst was explored. The results show that, compared with the intact coal specimen, the change of diameter, spacing, angle, and the number of holes weakened the coal specimen’s capacity to store energy and release strain energy. When the diameter, the vertical distance, and relative angle of preexisting holes were 15 mm, 10∼15 mm, and 60°, respectively, the energy storage limit reached optimal value. For arrangement of the artificial boreholes, the diameter, spacing, and angle can be designed on the basis of those optimal values. This study has a guiding significance in designing the arrangement of the artificial boreholes for mitigation of rockburst.

scholarly journals Analysis of Energy Accumulation and Dissipation of Coal Bursts

Energies ◽  
2018 ◽  
Vol 11 (7) ◽  
pp. 1816 ◽  
Author(s):  
Xiaohan Yang ◽  
Ting Ren ◽  
Alex Remennikov ◽  
Xueqiu He ◽  
Lihai Tan
Keyword(s):  
Energy Accumulation ◽  
Energy Accumulation And Dissipation ◽  
Coal Bursts

Voids in Irradiated Tungsten and Molybdenum

1969 ◽  
Vol 27 ◽  
pp. 190-191
Author(s):  
Robert C. Rau ◽  
Robert L. Ladd
Keyword(s):  
Melting Point ◽  
Fast Neutron ◽  
Neutron Irradiation ◽  
Elevated Temperatures ◽  
Irradiation Temperature ◽  
The Body ◽  
Face Centered Cubic ◽  
Body Centered Cubic ◽  
Cubic Metals ◽  
Face Centered

Recent studies have shown the presence of voids in several face-centered cubic metals after neutron irradiation at elevated temperatures. These voids were found when the irradiation temperature was above 0.3 Tm where Tm is the absolute melting point, and were ascribed to the agglomeration of lattice vacancies resulting from fast neutron generated displacement cascades. The present paper reports the existence of similar voids in the body-centered cubic metals tungsten and molybdenum.

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