ME2114 Solution 0405-1

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nry bGu!cd.

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u=tI1a. 'ozEA

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u=?!f-a 62f;l L12

U= J-:-&(

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Corrfitrllvr rdrdor ftr Lotrolac&rdc lttttb: -rg..) "-=|G--'-, _,o_) ",=iG,---'--)

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l , fr=dt, G t E

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Or6tior I A strair glrgc fu mourt d oi s tiirFwal€d cylidricel pr.s$rc vcsscloflhickr.ss 5 mm .td dirm.b 600 mm rs So*! in Figue l.Iflbc drrin gat3c hls t gaugaLttgth of 5 mm std clqgrtcs 0,0(Dmm wlrcoo bEorl plwrc P is applic4 drtrmirc: (a)

lhc intcmrl prrsnrc P, (10t totb)

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usingthc trffir's cirElc for -*!it! detEiE rhr sr.xiEun ittsplte $€.ring strsin rnd dlc lerins d |t| |oSlc I t lnticlclwilc to thcr-ark. (15 n&b)

Asru € E = 200cPr, rad v= 0.3.

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Ou6tior 2 A forcr P is appliedto the handleAB of. contol levef,BC asshownin Figurc2a.The lcv6 is pinncdat bothendsandhasa crosssectionasshownin Figu.e2b. It is madeof stcelwhich hasa yield stessin comprEssion of250 MPa-For a safetyftc'torof I .5, (a)

det€rminelhe maximumforceP thafcanbeappliedsothatthe leve.doesnot buckle, (l7

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arks)

dctcrminethe maximuD forc€ P that cs bc appliedif the length of levcr BC is shorl€ned to ,100mmAssumcE=200GPa18nar*s)

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NATIONAL L]NIVERSITY OFSINGAPORE Department of Mechanical Engineering

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Session 2003-2004,Semester [l

)roou,"roo,, Module Title :

Solutionto QuestionNo.

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p I 36D = ?6D =..:_

The ubove question hddsnot been as*ed in onf preyious test ot exminatiofi

saev, Checked By :

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Date: Date:

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NA1IONALT]NIVERSITY OFSINGA?ORE Depaxtment of MechanicalEngineering Session 2003-2004. Semester I1 ModuleCode: ModuleTitlel Solutionlo Qu€stionNo.

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