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ÀÛ¼ºÀÚ Uploader : pmsix ÀÛ¼ºÀÏ Upload Date: 2017-12-05º¯°æÀÏ Update Date: 2023-07-14Á¶È¸¼ö View : 7564

Type1 Type2
±×¸²°ú °°ÀÌ ÁöÁ¡ BÀÇ ÇÏÁßÀÌ P(kN)ÀÎ »ï°¢ºÐÆ÷ÇÏÁßÀÌ ÀÛ¿ëÇÏ´Â ±æÀÌ L(m)ÀÎ ´Ü¼øº¸ÀÇ ¹Ý·ÂÀº ´ÙÀ½°ú °°ÀÌ °è»êÇÒ ¼ö ÀÖ´Ù. No Image
¹Ý·Â RA¸¦ ±¸Çϱâ À§Çؼ­ ¸ÕÀú, ÁöÁ¡ B¿¡¼­ÀÇ ¸ð¸àÆ® ÇÕÀÌ 0 ÀÓÀ» ÀÌ¿ëÇÑ´Ù.

¢²MB = RA*L - (1/2)PL*L/3 = 0


¼öÁ÷¹æÇâ ÈûÀÇ ÇÕ·ÂÀÌ 0 ÀÓÀ» ÀÌ¿ëÇϸé, ¢²PV = RA + RB - (1/2)PL = 0 À̹ǷÎ,


ÇÑÆí, ÁöÁ¡ A·Î ºÎÅÍ x (m)¸¸Å­ ¶³¾îÁø ÁöÁ¡ÀÇ ¸ð¸àÆ®´Â ´ÙÀ½°ú °°ÀÌ ±¸ÇÒ ¼ö ÀÖ´Ù.
(½Ã°è¹æÇâ + )
Mx = RA*x - (P/L)*x*(x/2)*(x/3) = (1/6)*(P*L*x - (P/L)*x^3)


¸ð¸àÆ®°¡ ÃÖ´ë°¡ µÇ´Â À§Ä¡ xm (m)´Â Mx¸¦ ¹ÌºÐÇÏ¿© °è»êÇÒ ¼ö ÀÖ´Ù.

Mx¡Ç = (1/6)*(PL - 3(P/L)*x^2) = 0 À¸·Î ºÎÅÍ, (PL/6)(1-3(x/L)^2) = 0, x/L = (1/3)^(1/2)


xm À» ½Ä 3¿¡ ´ëÀÔÇÏ¿© Á¤¸®Çϸé, ÃÖ´ë ¸ð¸àÆ® Mmax ¸¦ ±¸ÇÒ ¼ö ÀÖ´Ù.
Mmax = (1/6)*(P*L*L*(1/3)^(1/2) - (P/L)*(L*(1/3)^(1/2))^3)
          = (P*L^2/6)(1/3)^(1/2)(2/3)
          = (P*L^2/9)(1/3)^(1/2)


ÃÖ´ë ¸ð¸àÆ® Mmax ´Â óÀ½¿¡ ¼¼¿î ¸ð¸àÆ®½ÄÀ¸·Îµµ °è»êÀÌ °¡´ÉÇÏ´Ù.


¡Ø ÀÌ »çÀÌÆ®´Â ±¤°í¼öÀÍÀ¸·Î ¿î¿µµË´Ï´Ù.

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  • ¸ð¸àÆ®°¡ ÃÖ´ë°¡ µÇ´Â À§Ä¡¿Í ÃÖ´ë ¸ð¸àÆ® °è»ê½Ä Ãß°¡¿ä.

    pmsix
    [2017-12-09 02:51:16]
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