Homework 3

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

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

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

View Full Document

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

View Full Document

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

View Full Document
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 ([email protected] 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

{[ snackBarMessage ]}

### 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
Ask a homework question - tutors are online