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高性能爆薬の水中爆ごうにより発生した水中衝撃波の基本特性 Fundamental Characteristics of Underwater Shock Wave due to Underwater Explosion of High Explosives コウセイノウ バクヤク ノ スイチュウ バクゴウ ニヨリ ハッセイシタ スイチュウ ショウゲキハ ノ キホン トクセイ Itoh, Shigeru Nadamitsu, You Kira, Akio 長野, 司郎 ナガノ, シロウ Nagano, Shiro 長野 ナガノ Nagano 司郎 シロウ Shiro 藤田, 昌大 フジタ, マサヒロ Fujita, Masahiro 藤田 フジタ Fujita 昌大 マサヒロ Masahiro 本田, 隆志 ホンダ, タカシ Honda, Takashi 本田 ホンダ Honda 隆志 タカシ Takashi 伊東, 繁 灘光, 陽 吉良, 章夫 長野, 司郎 藤田, 昌大 本田, 隆志 社団法人 日本機械学会 530 Shock Wave Method of Characteristics Detonation Numerical Analysis Expansion Wave Shock Attenuation application/pdf 論文(Article) Fundamental characteristics of underwater shock waves generated by underwater explosion of high explosives are investigated by both experimentally and by numerical simulation. The attenuation process of the underwater shock wave is also investigated theoretically using a method of characteristics. Slab explosives are used in the experiments. Streak photographs are taken by a high speed camera using a conventional shadowgraph system. When the detonation wave propagates into the explosive, the underwater shock wave is generated at the boundary between the slab explosives and the water. The incident angle of the underwater shock wave is the same as that obtained by the impedance matching method between the explosives and water. The angle then changes due to the effects of interaction with the expansion wave occurring due to the expanded product gas. The attenuation process of the underwater shock wave is well explained by the method of characteristics. http://ci.nii.ac.jp/naid/110002395027@@@http://www.jsme.or.jp/ 社団法人 日本機械学会 The Japan Society of Mechanical Engineers 1996-09-25 jpn journal article VoR http://hdl.handle.net/2298/13552 https://kumadai.repo.nii.ac.jp/records/23167 03875016 AN00187441 日本機械学會論文集. B編 62 601 3278 3283 https://kumadai.repo.nii.ac.jp/record/23167/files/110002395027.pdf application/pdf 504.7 kB 2020-03-02