Question

5.7-3 A tapered cantilever beam AB gular cross sections is subjected to load P 220 N and a couple Mo 90 N at the free end (see figure part a). The width beam is constant and equal to 25 mm, but the varies linearly from h -50 mm at the loaded endro hB 75 mm at the support. (a) At what distance x from the free end does the maximum bending stress ơmax occur? What is the magnitude ơmax of the maximum bending stress? What is the ratio of the maximum strew to the largest stress ơB at the support llC location of maximum moment? P = 220 N Mo=90 N·m B 4 2 75 mm 50 mm に25 mm b = 25 mm L = 500 mm

Answer 1

2tude BM the The ditace Crorsseeo af eud is Mre Put Mo Sx-Lh Sedoon moduliu 1 th4t(he-hA MM tress Oxlo 220 X 50+ F5-50) Soo 25

Mox 220 +90000 bx 25 22F900O 25 2+ to be mel 22 と9000 3 SUNDAY 4 4 00o 2

22 442ナ18000 2 2 44 (800d 7144+22人 4-418000 4 4 L+22'% 4 4 t1800o 44L WITGOAS || 4-4X S00 Igooo 22Y 2 2 ン181-8mm A 0 90000 メ6 54 DO00 15615*4 ( 25) 2 8-64 MPa

At 5po +9000oxe 10 25 X 11 8533 MPa 12 6max= 220x188 +90000O 1 77 1976 at 2Ł181S (25) 2 *A&1gmm 3 8-735 MPa man N>181-8mm 5 Ratio 8-925 8-533 04