衝撃圧縮開始時刻と計測応力波の立上り開始時刻との関係 : 数値計算による分割ホプキンソン棒圧縮法の標準化に関する研究 1 Relationship between Commencement Time of Impact Compression and Commencement Time of Observed Stress Pulses : Study of Standardization of Impact Compression Test by Split Hopkinson Pressure Bar Technique with the Aid of Numerical Simulation 1

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The split Hopkinson pressure bar test is numerically simulated, in which the assumed mechanical property of the specimen is compared with that calculated from the stress waves in incident and transmitted bars. The method of processing the stress waves in the bars is investigated to improve the accuracy of the stress-strain curve. The stress-strain curve of the specimen depends on how one determines the commencement time of stress pulse in the elastic bars. When the commencement time of stress pulse is determined using an appropriate threshold value of stress, both the elastic and plastic properties are close to the assumed ones. On the other hand, when the commencement time of stress pulse is determined by the speed of elastic wave propagation, the elastic modulus is considerably underestimated. Considering that both the elastic and plastic behaviors are well described quantitatively, the method using the threshold value of stress in determining the commencement time of stress pulse could be suitable for obtaining more accurate stress-strain curve.

収録刊行物

  • 塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY  

    塑性と加工 = JOURNAL OF THE JAPAN SOCIETY FOR TECHNOLOGY OF PLASTICITY 48(558), 635-639, 2007-07-25 

    The Japan Society for Technology of Plasticity

参考文献:  11件

被引用文献:  4件

各種コード

  • NII論文ID(NAID)
    10018927111
  • NII書誌ID(NCID)
    AN00135062
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    00381586
  • NDL 記事登録ID
    8899889
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-218
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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