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Çѱ¹Áö¹Ý°øÇÐȸ / v.3, no.3, 1987³â, pp.63-74
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( Numerical Calculation of High Pressure Compaction for Porous Materials )
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³ôÀº ¾Ð·ÂÀ» ¹Þ´Â ´Ù°øÁú Àç·áÀÇ ¾ÐÃà¿¡ ´ëÇÑ ÀÌ·ÐÀû ÀÀ·Â-º¯ÇüÀÇ ±¸¼º ¹æÁ¤½ÄÀÌ Á¦¾ÈµÇ¾ú´Ù. º» ±¸¼º ¹æÁ¤½Ä¿¡´Â ¼Ò¼ºÀÌ·ÐÀ» ±Ù°Å·ÎÇÏ¿© ÇϳªÀÇ yield function°ú normality ruleÀÌ Àû¿ëµÇ°í °ø±ØÀ» (porosity)À» strain-hardening parameter·Î »ç¿ëÇϰí ÀÖ´Ù. À§ ±¸¼º ¹æÁ¤½ÄÀº À¯ÇÑ¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÑ 2Â÷¿øÀÇ ÄÞÇ»ÅÍ ÇÁ·Î±×·¥¿¡ »ïÀÔµÇ¾î ´Ù°øÁúÀç·áÀÇ ¾ÐÃàÀ» ¼öÄ¡ÇØ¼®ÀûÀ¸·Î ¿¬±¸Çϴµ¥ Àü¿´´Ù. ƯÈ÷ ´Ù°øÁú Àç·áÀÇ ¾ÐÃà°ú °üÇöµÇ¾î ¹ß»ýµÇ´Â ¿©·¯°¡Áö Çö»óÀ» ±Ô¸íÇϴµ¥ ¼öÄ¡ÇØ¼®Àû ¿¬±¸ÀÇ Áß¿ä ¼ºÀÌ Àνĵǰí ÇÏÁßÁ¦°ÅÈÄ¿¡ ¾ÐÃàµÈ Àç·á¿¡ ¹ß»ýµÇ´Â ÀÎÀåÀÀ·Â°ú ±Õ¿­¿¡ °üÇÑ Çö»óÀ» °íÂûÇÏ¿´´Ù.
A practical constitutive equation with sufficient generality is proposed for porous materials to deal with plastic pore compaction and pore related strain-hardening. With an application of this proposed model, finite element calculations are executed for the compaction of a porous material. Results show powerful potential of finite element method in a quantitative investigation of the process of the compaction. Special attention is given to the process of unloading during which the development of tensile principal stress may lead to phenomena such as lamination and end-capping.
 
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.3, no.3, 1987³â, pp.63-74
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198711920443041)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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