Analysis of Nonlinear Wave Propagation and Shock Wave Formation in Quasi-Brittle Material

• Saka Masumi

  Department of Mechanical Engineering, Tohoku University

• Ohba Shinichi

  Desktop Printer Products Development, Fuji Xerox Co., Ltd.

• Aizawa Norio

  Atago Ichichome Project Office, Obayashi Corporation

• Abe Hiroyuki

  Department of Mechanical Engineering, Tohoku University

抄録

Fracture of quasi-brittle materials such as concrete and rocks is known to result from the formation and development of microcracks. Microcracks reduce the macroscopic value of Young's modulus and therefore the corresponding wave velocity, so that shock wave formation is expected. The phenomenon was studied for granite as an example of quasi-brittle materials. By using of a constitutive law based on experiment, the nonlinear wave propagation was analyzed numerically for an infinite plate. The plate is subjected to an impact compressive stress at one of its surfaces. The other surface of the plate is assumed to be stress free. It was shown that the shape of the incident wave has a significant effect on the forming shock wave.

収録刊行物

• JSME international journal. Ser. A, Mechanics and material engineering

  JSME international journal. Ser. A, Mechanics and material engineering 37 (4), 421-427, 1994-10-15

  一般社団法人日本機械学会

キーワード

• Nonlinear Problem
• Finite-Element Method
• Computational Mechanics
• Shock Wave
• Quasi-Brittle Material
• Microcrack

詳細情報

• CRID: 1574231876901327616
• NII論文ID: 110002964234
• NII書誌ID: AA10888746
• ISSN: 09148809
• 本文言語コード: en
• データソース種別:
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