Homework 3

Homework 3 - 1.25 A gnu—diameter steel rod AB is fitted...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1.25 A gnu—diameter steel rod AB is fitted to a round hole near end C of the wooden member CD. For the loading shown, determine (a) the maxi— mum average normal stress in the wood, (19) the distance b for which the av- erage shearing stress is 100 psi on the surfaces indicated by the dashed lines, (c) the average bearing stress on the wood. A “’ “i w yawfi gem {its / - w an e» 1- w wwmw Wm ejm anij {ml} fgwwé 53 M‘\ ) bx £53” ‘1 1,3 m. ":1 ii 2‘“ Mite"; “‘1’” 3 v “Wig; 52W wwmwt , w W C! W mg 15*“ Fab M/ q fig) _ {egg 5 "t [g (x@ L ;: gawgtflfi} L»; J; Martha» MM cf g} fag} ti fifxaggtgiéé “g k 3’ 1.39 Knowing that the ultimate load for cable ED is 100 kN and that a factor of safety of 3.2 with respect to cable faiiure is required, determine the magnitude of the largest force F that can be safely applied as shown to mem— ber ABC, 8}} g a: fl“? , {jug M}: r? “" \fiagy %§>§5w+s$xot§m) +Pul~x .“Q X ti??? )3 ; [Ogaxmgié‘i I e e Viffow-W ’ {:«W’mwww Five?” W 1.5% In the steel structure shown, a 6—mm-diameter pin is used at C and —mrn-diameter pins are used at B and D The ultimate shearing stress is 150 MPa at all connections, and the ultimate normal stress is 400 MPa in link _ BDi Knowing that a factor of safety of 3.0 is desired, determine the largest Frontwew load P that can be applied at A. Note that link ED is not reinforced around the pin holes. 18 mm M‘me w ‘J {3} j fi‘ k3 & 3'? WWEWV +7 $9 é: i i / “V‘gwwww g i3¥,§44§“~ damn-WW M ‘9 v} g the P’ m- e . s f «i WWW—ea an Egg?“ S 33$“? K 3 $3; éeéewtfikfi 53“ 'j l; t2 «e ggeeefewizw?) to} ‘ trig: wt teats: 5 {W 53%: ‘ Design («0 H WWMW W “2.33 F W ’9‘“ E I ,2“; g Sf "’3 ‘ I WAWZI 7’ {3’ g: C, 5 g , .4; $4 w «fww‘wmgmm "5; is; *1 $5? «I»... $29 H “gm egf'wa Sonata {fizzle mekefi r—J avg : 1,17 Two wooden planks, each i in. thick and 9 in, wide, are joined by [ha dry mortise joint shown. Knowing that the wood used shears off along its grain when the average shearing stress reaches 1.20 ksi, determine the magni- tude P of the axial load that will cause the joint to fail. g “5/3! 9”} x I ‘ 3W}; ’ 5 ,«vr ‘“ Nam: 52%: aware we " mg g a“; S-Qiy‘biiim ; . 6 load P applied to a steel rod 18 distributed to a timber support ‘ by an annular washer. The diameter of the rod is 22 mm and the inner diame- ter of the washer is 25 mm, which is slightly larger than the diameter of the hole. Determine the smallest allowable outer diameter d of the washer, know- ing that the axial normal stress in the steel rod is 35 MPa and that the average bearing stress between the washer and the timber must not exceed 5 MP3. Fig. PLZO ix v c ...
View Full Document

Page1 / 6

Homework 3 - 1.25 A gnu—diameter steel rod AB is fitted...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online