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Çѱ¹Áö¹Ý°øÇÐȸ / v.23, no.3, 2007³â, pp.89-100
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Á÷±³ À̹æÀû »çÁúÅäÀÇ ¹Ì½Ã¿ªÇÐÀû ź¼Ò¼º ¸ðµ¨¸µ: II. ¹Ì½Ã¿ªÇÐÀû ÇØ¼®
( Elastic-plastic Micromechanics Modeling of Cross-anisotropic Granular Soils: II. Micromechanics Analysis ) |
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| º» ³í¹®°ú ÇÔ²² Á¦ÃâÇÑ ³í¹®¿¡¼´Â ¹Ì½Ã¿ªÇÐ ±â¹ÝÀÇ »õ·Î¿î ź¼Ò¼º ¸ðµ¨ÀÇ Á¤½ÄÈ¿¡ ´ëÇØ ¼³¸íÇÏ¿´´Ù. º» ³í¹®¿¡¼´Â »çÁúÅä º¯ÇüÀÇ Åº¼º ¹× ź¼Ò¼º °Åµ¿À» ¹Ì½Ã¿ªÇп¡ ±Ù°ÅÇÏ¿© ÀÚ¼¼È÷ ºÐ¼®ÇÏ¿´´Ù. ¸ðµ¨¿¡ ÇÊ¿äÇÑ º¯¼ö Æò°¡¸¦ À§ÇÑ °úÁ¤À» Á¦½ÃÇÏ¿´´Ù. µî¹æ ¹× »ïÃà ¾ÐÃà ½ÃÇè¿¡¼ ³ªÅ¸³ »çÁúÅäÀÇ Åº¼º °Åµ¿À» ºÐ¼®ÇÑ °á°ú, Á÷±³ À̹æ ź¼º°è¼öÀÇ ÀÀ·Â Á¾¼Ó¼ºÀº ¹Ì½ÃÀû ¼öÁ÷ °¼º¿¡¼ ³ªÅ¸³ ¼öÁ÷ Á¢ÃË·ÂÀÇ °ÅµìÁ¦°ö ÇÔ¼ö ÇüŰ¡ ¹Ý¿µµÇ¾î ³ªÅ¸³ª¸ç, »ïÃà ¾ÐÃà ÀÀ·Â »óÅ¿¡¼´Â Á¶Á÷ À̹漺ÀÇ º¯È°¡ ÀÀ·Â Á¾¼Ó¼º¿¡ ¿µÇâÀ» ¹ÌħÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ¹Ì½Ã¿ªÇÐÀû ÇØ¼®À» ÅëÇØ ¼Ò¼º º¯ÇüÀÌ ¸Å¿ì ³·Àº º¯Çü·ü ¼öÁØ¿¡¼µµ ¹ßÇöµÇ¸ç, º¯Çü Áß »çÁúÅä °¼ºÀÇ ºñ¼±ÇüÀû °¨¼Ò´Â Á¢ÃËÁ¡¿¡¼ÀÇ Á¢¼± ¹æÇâ ¼Ò¼º º¯Çü¿¡ ÀÇÇØ ³ªÅ¸³²À» ¹àÇû´Ù. |
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| In the companion paper, we provided the novel elastic-plastic constitutive model based on the micromechanics theory. Herein, the elastic and elastic-plastic deformation of granular soils is meticulously analyzed. To guarantee high accuracy of the microscopic parameter, the systematic procedure to evaluate the parameters is provided. The analysis of the elastic response during the isotropic and triaxial compression shows that the stress-level dependency of cross-anisotropic elastic moduli is induced by the power relationship of the contact force in the normal contact stiffness, while the evolution of fabric anisotropy is more pronounced during triaxial compression. The micromechanical analysis indicates that the plastic strains are likely to occur at very small strains. The plastic deformation of tangential contacts has an important role in the reduction of soil stiffness during axial loading. |
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| Ű¿öµå |
| Constitutive modeling;Elastic-plastic behavior;Granular soils;Micromechanics; |
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Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.23, no.3, 2007³â, pp.89-100
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200714539254320)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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