佐々木 和正

吉田 敏雄

柴原 正雄

Hitherto, some experimental studies to explain the stress wave propagations and the dynamic stress distributions have been tried on the base of photoelasticity with the aid of high speed camera or stroboflash, and on the other hand, by using the strain gages. But, they have not been discussed from a point of view of characteristics of the incident stress wave. Therefore, in this paper, the dynamic photoelastic method by repeating with the use of strobo flash light was adopted, and the shapes of the incident stress waves in rectangular specimens of two kinds of materials and the dynamic stress concentration phenomena at the circular holes and both sides semi-circular notched portions were studied in giving striker three kinds of steel plates as the dropped body. As the result of experiments, it may be concluded that the shapes of the incident stress waves vary with the profile of the contact surface of the striker and the dynamic stress concentration factors are larger than the static factors for the flat end striker, especia11y during the primary period of the impact. And the other hand, for the pointed- head striker, the dynamic stress concentration factors are sma1ler than the stastical that

Shibahara Masao

Sasaki Kazumasa

Yoshida Toshio

Kanazawa University Repository for Academic Resources

動光弾性実験装置と動的応力集中について

https://kanazawa-u.repo.nii.ac.jp/?action=repository_action_common_download&item_id=11802&item_no=1&attribute_id=26&file_no=1

動光弾性実験装置と動的応力集中について

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