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Çѱ¹¼öÀÚ¿øÇÐȸ / v.26, no.1, 1993³â, pp.71-79
¾ÐÃà°ø±âÁÖÀÔ ±¸Á¶¹°¿¡ ÀÇÇÑ ºñ¼±Çü ÆÄ¶ûº¯Çü ¹× °ø±â¾ÐÀÇ º¯È­¿¡ °üÇÑ ¿¬±¸
( Nonlinear Wave Transformation and Air Pressure Variation of Air-Chamber Structure )
±èµµ»ï;¾ÏÀüÈ£À϶û;¾çÀ±¸ð; ¸í°í¿Á´ëÇÐ °øÇкΠÅä¸ñ°øÇаú;¸í°í¿Á´ëÇÐ °øÇкΠÅä¸ñ°øÇаú ¹Ú»ç°úÁ¤, (ÁÖ)»ïÈ­±â¼ú´Ü °í¹®;;
 
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°ø±âÁÖÀÔ ºÎÀ¯±¸Á¶¹°¿¡ ´ëÇÑ ¾Ð·Âº¯È­ÀÇ ºñ¼±Çü Ư¼º°ú ÆÄ¶ûº¯ÇüÀ» ÀÌ·ÐÀû ¹× ½ÇÇèÀûÀ¸·Î °ËÅäÇÑ´Ù. ¼·µ¿¹ý°ú Green °ø½Ä¿¡ ÀÇÇÑ µÎ°¡Áö ÀÌ·ÐÀû ¹æ¹ý(¹æ¹ýI, II)ÀÌ Àá¼ö, ¹ÝÀá¼ö ºÎÀ¯±¸Á¶¹°¿¡ ÀÇÇÑ ÆÄÀÇ ºñ¼±Çü¼ºÀ» Æò°¡Çϱâ À§Çؼ­ Àû¿ëµÈ´Ù. ´õ¿ì±â ºÎÀ¯ ±¸Á¶¹° ³»ÀÇ °ø±â¾Ð º¯È­¸¦ °í·ÁÇϱâ À§ÇÏ¿© Boyle-Charles ¹ýÄ¢¿¡ µû¸¥ ´Ü¿­º¯È­¸¦ °¡Á¤ÇÏ¿© À¯µµµÈ °ø±â¾ÐÃà¸ðµ¨ÀÌ »õ·ÎÀÌ °³¹ßµÇ¾ú´Ù. °¡»ó°æ°è¿¡¼­ °¨¼èÁ¤»óÆÄ¸¦ °í·ÁÇÑ ¹æ¹ý IÀÇ ÀÌ·ÐÄ¡´Â °¨½ÃÁ¤»óÆÄÀÇ ¿µÇâÀÌ ¹ÌÄ¡Áö ¾Ê´Â °¡»ó ¿¬Á÷°æ°è¸éÀ» °°´Â ¹æ¹ý IIÀÇ °ª°ú Àß ÀÏÄ¡ÇÑ´Ù. µÎ À̷п¡ ÀÇÇÑ ÀÌ·ÐÄ¡´Â ½ÇÇèÄ¡¿Í Àß ÀÏÄ¡ÇÔÀ» º¸¿©ÁØ´Ù.
Nonlinear characteristics of air pressure variation and wave transformation of a fixed air-chamber structure are discussed theoretically and experimentally. Two analytical methods(method I and II) based on the perturbation method and Green's formula are employed in order to evaluate nonlinearities by the submerged and semi-submerged air-chamber structure. Moreover, an air compression model is newly developed to estimate the dynamic air pressure in the air-chamber inside the structure, assuming the Boyle-Charles's law with adiabatic process in the air pressure variation. Theoretical values of the method I considering evanescent mode waves at an fictious boundary, are in good agreement with those of method II employing the fictious boundary which is not affected by evanescent mode waves. Both theoretical values are shown to agree well with experimental values.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.26, no.1, 1993³â, pp.71-79
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311920094344)
¾ð¾î : Çѱ¹¾î
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