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Sasa, Narimasa; Yamada, Susumu; Machida, Masahiko; Arakawa, Chuichi*
Nihon Keisan Kogakkai Rombunshu, 7, p.83 - 87, 2005/05
no abstracts in English
Yamada, Susumu; Imamura, Toshiyuki*; Machida, Masahiko; Arakawa, Chuichi*
Nihon Keisan Kogakkai Rombunshu, 7, p.243 - 252, 2005/05
no abstracts in English
Itakura, Mitsuhiro; Kaburaki, Hideo; Arakawa, Chuichi
Physical Review E, 71(5), p.055102_1 - 055102_4, 2005/05
Times Cited Count:8 Percentile:39.34(Physics, Fluids & Plasmas)The process of slow intergranular crack propagation was investigated by the finite element method model and it was found that branching is induced by partial arresting of a crack front owing to the geometrical randomness of grain boundaries. A possible scenario for the branching instability of crack propagation in a disordered continuous medium is also discussed.
Ishikura, Shuichi*; Kogawa, Hiroyuki; Futakawa, Masatoshi; Kikuchi, Kenji; Hino, Ryutaro; Arakawa, Chuichi
Journal of Nuclear Materials, 318, p.113 - 121, 2003/05
Times Cited Count:12 Percentile:62.35(Materials Science, Multidisciplinary)The thermal shock stress in the mercury target vessel was analyzed: the target receives the incident proton beam at the energy of 1 MW with the pulse duration of 1ms. Negative pressure of maximal 61MPa was generated when the initial pressure of 52MPa propagated in mercury. It is expected then that the cavitation may be arisen by the negative pressure. So in order to know the cavitation behavior, the simulation study was carried out by using the equation of motion based on the bubble dynamics for a single bubble, and fundamental parameter analysis was carried out. It is found that a bubble has a potential expansion more than 1000 times with a change of the pressure at the window of the target vessel. Consequently wave propagation will be affected. Theoretical consideration was given to the wave motion of propagation in bubbly liquid. The equation of state in bubbly liquid can be approximated by the polynomial. The diameter of a bubble and the bubble volume fraction inherent in mercury can be decided if the critical pressure, the sound velocity, and resonance frequency is successfully measured by static and dynamic experiment.
Sasa, Narimasa; Machida, Masahiko; Yamada, Susumu; Arakawa, Chuichi
Keisan Kogaku Koenkai Rombunshu, 8(2), p.757 - 758, 2003/05
no abstracts in English
Shimizu, Futoshi; Kimizuka, Hajime*; Kaburaki, Hideo; Arakawa, Chuichi*
Keisan Kogaku Koenkai Rombunshu, 7(1), p.163 - 166, 2002/05
no abstracts in English
Sasa, Narimasa; Machida, Masahiko; Yamada, Susumu; Arakawa, Chuichi
Keisan Kogaku Koenkai Rombunshu, 7(1), p.171 - 172, 2002/05
Algebraic Multi Grid(AMG) is applied to solve the Ginzburg-Landau equations for Superconductors. The method effectively solves large scale linear algebraic equations. AMG is also applicable for systems with complex boundary condition in contrast with usual Geometrical Multi Grid.
Goto, Norikazu*; Imai, Ryuta*; Arakawa, Chuichi
Keisan Kogaku Koenkai Rombunshu, 7(1), p.47 - 48, 2002/05
no abstracts in English
Shimizu, Futoshi; Kimizuka, Hajime*; Kaburaki, Hideo; Arakawa, Chuichi*
Nihon Keisan Kogakkai Rombunshu, 4, p.225 - 230, 2002/04
no abstracts in English
Imai, Ryuta*; Arakawa, Chuichi*; Kobayashi, Kenichi*; Hino, Ryutaro; Ishikura, Shuichi*; Kogawa, Hiroyuki; Terada, Atsuhiko*; Haga, Katsuhiro; Watanabe, Tadashi
Dai-14-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Yoshishu, p.C10_1_1 - C10_1_14, 2000/00
no abstracts in English
Kobayashi, Kenichi*; Arakawa, Chuichi*; Imai, Ryuta*; Hino, Ryutaro; Ishikura, Shuichi*; Kogawa, Hiroyuki; Terada, Atsuhiko*; Haga, Katsuhiro; Watanabe, Tadashi
Dai-14-Kai Suchi Ryutai Rikigaku Shimpojiumu Koen Yoshishu, p.C10_2_1 - C10_2_3, 2000/00
no abstracts in English