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Çѱ¹Áö¹Ý°øÇÐȸ / v.12, no.6, 1996³â, pp.87-100
ÀÏ¹Ý µî¹æ°æÈ­ ±¸¼º°ü°è¿¡ ´ëÇÑ ³»ÀçÀûÀÎ À½·ÂÀûºÐ : II. °ËÁõ
( Implicit Stress Integration of the Generalized Isotropic Hardening Constitutive Model : II . Verification )
¿À¼¼ºØ;À̽·¡; Á¤È¸¿ø, ¿µ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Á¤È¸¿ø, Çѱ¹°úÇбâ¼ú¿ø Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â µ¿¹Ý³í¹®(¿À¼¼ºØ & À̽·¡, 1996)¿¡¼­ Á¤½ÄÈ­ÇÑ ºñµî¹æ°æÈ­ ±¸¼º¸ðµ¨¿¡ ´ëÇÑ ³»ÀçÀûÀÎ ÀÀ·ÂÀûºÐ ¾Ë°í¸®ÁòÀÇ Á¤È®¼º°ú È¿À²¼ºÀ» °ËÁõÇÏ¿´´Ù. ºñ¹è¼ö »ïÃà¾ÐÃà½ÃÇè°æ·Î¿¡ ´ëÇÑ ¿ÀÂ÷Æò°¡¸¦ ÅëÇÏ¿© Á¤È®µµÇؼ®À» ¼öÇàÇÏ¿´°í ¼öÄ¡ÀûÀÎ ±¼ÂøÇؼ®¿¹Á¦¸¦ ¼öÇàÇÔÀ¸·Î½á Á¤È®µµ ¹× ¼ö·Åµµ¸¦ ºÐ¼®ÇÏ¿´´Ù. ±× °á°ú Á¦¾ÈµÈ ¾Ë°í¸®ÁòÀÌ ºñµî¹æ°æÈ­ ±¸¼º°ü°è¿¡ ´ëÇÏ¿© À½·ÂÀ» Á¤È­ÇÏ°Ô ÀûºÐÇϰí Newton ¹ýÀ» ÀÌ¿ëÇÑ ºñ¼±Çü ÇØ¼®½Ã¿¡ Á¡±ÙÀûÀÎ 2Â÷ ¼ö·Åµµ¸¦ È®º¸ÇÔÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ±×¸®°í ÀÌ·¯ÇÑ °ËÁõÀ» Åä´ë·Î Áö¹ÝÀÇ ÃʱâÁ¶°Ç ¹× ½Ã°ø´Ü°è¸¦ °í·ÁÇÑ À¯ÇÑ¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÏ¿© ½ÇÁ¦ ±¼Âø¹®Á¦¸¦ ÇØ¼®ÇÏ¿´´Ù. ºñµî¹æ°æÈ­ ±¸¼º°ü°è¸¦ ÀÌ¿ëÇÔÀ¸·Î½á, ÃßÁ¤µÈ º®Ã¼ÀÇ º¯À§´Â Cainflay¸ðµ¨¿¡ ºñÇÏ¿© ½ÇÁ¦¿Í ´õ À¯»çÇÑ ÇØ¼®°á°ú¸¦ ¾òÀ» ¼ö ÀÖ¾ú´Ù.
This paper verifies the accuracy and efficiency of the implicit stress integration algorithm for an anisotropic hardening constitutive model developed in a companion paper[Oh & Lee (1996)3. Simulation of undrained triaxial test results shows the accuracy of the method through an error estimation, and analyses of accuracy and convergence were performed for a numerical excavation problem. As a result, the stress was accurately integrated by the algorithm and the nonlinear solution was converged to be asymptotically quadratic. Furthermore nonlinear FE analysis of a real excavation problem was by performed considering the initial soil conditions and the in-situ construction sequences. The displacements of wall induced by excavation were more accurately estimated by the anisotropic hardening model than by the Cam-clay model.
 
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Implicit stress integration;Consistent tangent modulus;Generalized istropic hardening rule;Nonlinear finite element analysis;Excavation;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.12, no.6, 1996³â, pp.87-100
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920447001)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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