EXPERIMENTAL STUDY OF STRAIN RATES EFFECTS ON STRAIN LOCALIZATION CHARACTERISTICS OF SOFT ROCKS

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概要

• 論文の詳細を見る

• The effects of strain rates on the strain localization characteristics of soft rocks in plane strain compression tests were studied. Using digital image correlation method based on image analysis technique, digital photographs of the specimen taken by CCD camera mounted in a microscope at different stages of loading were analyzed and displacement and strain fields were obtained. The accuracy of displacement and strain measurements are found to be 2.625μm and 0.0525% (for 5mm×5mm grid), respectively. By analyzing the strain fields, important information regarding strain localization characteristics at three different strain rates were obtained. The results of the study indicate that strain rate has significant influence on the localization modes. Strain localization was observed before the peak stress. The switching of localization mode from highly concentrated strain accumulation mode for higher strain rate to diffuse and complex strain accumulation mode for lower strain rate were observed. The evolutions of strain fields during creep tests at different loads were also studied.

• 社団法人地盤工学会の論文
• 2005-02-15

著者

• 井上 純哉

  Department Of Civil Engineering The University Of Tokyo

• BHANDARI ATHMA

  Department of Civil Engineering, The University of Tokyo

• Bhandari Athma

  Department Of Civil Engineering The University Of Tokyo

• Inoue Junya

  Department Of Civil Engineering The University Of Tokyo

関連論文

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