EAS207-Lec-12 - w\Nkevx m{“Y€€~boc§k\66\§ucéw\w 6...

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Unformatted text preview: w \Nkevx m {“Y€€~boc§k\66\§ucéw\w 6% cm Objeut has NOTE uthOWW ’901CQJ3 01 (CA/KW ,"Wcm W "(\UW‘AbQfl 6k \Ydfipg‘flézlm ECWUBVNM QWfi\W\/) QUOKMW ,. "hm Obfifitfi "Us fiwdu‘cwxg fiw§fimm§mfi~ F, 5 F1 F / No. 25} S’mdn‘c Bewitch a} @qmb'bxmm :33 N0 ' 5C} Unkwoww» :23 NO' 63’ ankfi N6- 03 WWW:er ‘ Wm, , Wm) \‘ ‘ No- (5} UN Know > NO- a} UfiK‘fioW :2: No. ()3 SW1 Eoi ‘ Non oi} 5Mfc Ecya-J ‘ "HALL PYOHQMV v3 "HA9 Prova {/3 fiafiw‘caflg Mm Wwe filvwhcmmfly (“Mum Eme .214 . :2 Ar :13me 2 3 [3-321 Um known/5 z 5‘ MAW-:3 , 9.1; © Umsfixbb 33CMC9N~<QA (Em ‘(O‘pd SwVPom) ' ”“ Pm Objeci "cm \Acm MENOPQY $M§>Fofi3 mm moi “(emaka in QWMbfiwx/s mehi 4m QCXWM 6% m {QUAD Lax‘efieo‘ cm Us . A, “ WMYI “HA9 VMNBM 2% \MAW/xoww $M§>§>ofi gtoxcm I owxé} mom/61% Kn {Q55 “‘6wa +\/\& “\AMNDQY 6g \mkgqmékmi QWXKMNW newx‘m QMWJ ‘HML 0);;er \Aqg {MFYOBRY ‘Nyspofts OY SM 15: 11> \Ns’mM» ¥ vaN-KvxowW) :2 2 . ( UWK‘AOWM'ZZ lew§W :3 Eqmfifiow) 2—3 FEW s’caksmLy s‘vxmeymwe Pyobkww, Sawfn‘m Com be 6333mm“; by SOs/Hy}ng ewx‘dw) 0’} ecuMMbflx/Am amok QWWW) _ M SJLQm v-fYoM Obrfowmath‘m CoMx'szme ’ Fx‘Oe COWMOME} M SxXbfiW: U) BQM om Sec-WV “WW ,' é Femur KR! K . t ‘ 1 \‘N‘w-x paws 7 "/ / ‘ (C) Figure 5.27 Figure 5 26 (a) A ball and sockat support‘ (b) Hokfing a supponcd ban ’0) The ball and socket suppon can exert three components of force. The human femur is attache d to the pelvis by a ball’and socket support. Figure 5.28 (a) A roller suppott. > (b) The reaction is normal to the supporting surface. Figure 5.29 (a) A hinge. The 2 axis is aligned with the hinge axis. (b) Holding a supported bar. (c) In general. a hinge can exert five reactions: three force components and two couple component's. (d) The reactions when the hinge exerts no couples. (e) The reactions when the hinge exerts neither couples nor a force parallel to the hinge axis. (b) (d) Figure 5.30 (a) A bearing. The 2 axis is aligned with the axis of the shaft. (b) In general, a bearing can exert five reactions: three force components and two couple components. (0) The reactions when the bearing exerts no couples. ‘4 Bearing (a) Figure 5.31 (a) A built~in support. (b) Holding a supponed bar. ’ (C) A bum‘m support can exert six reactions: Table 5.2 lhrex: force components and three couple. components. Suppons used m threadimcnstonai applications. , Supports Reactions R" ' A ,,,, .- ——T _ M‘.\\\] ii Rope or Cable One Collinear Force r J n A ,\' 1 1 . _ i a / Cuntucl with a Smouth Surface One Nonnai Force _. . _ _* \ y A“ ,\’ ' — x A_/ ,4 ’ l '. ~ / ‘ (‘onmd with A Rough Surf'ucc i Three Force Components Liz , ~ h??? l , $.33! Reactions .7 l A}. I ‘MAV Ct; I .\' I- M h \ J A A. MAX \ l _ / 1 Three Force Components. HW?‘ Two Couple Components (The : ileS IN parallel to the hinge axis.) V 5 - HA- _\‘ ‘ (2/ A‘ A / (When no couples arc mutual) l\i , A I J.- " Bearing A “i (The : axis is parallel to the ' l axis of the HUppOl’lCd shall) (When no couples and no axial force 2m: cxcrl‘cd) A I , Three Force Components, ’l‘hrcc Couplc Components 1,31. Q '34) , (339sz 5.113 The plate is supported by hinges at A and B and the cable PYOWM $31: CE, and is loaded by the force at D. The edge of the plate sup- ported by the hinges lies in the y—z plane. The hinges do not exert couples on the phite‘ What is the tension in the cable CE? ‘ ’ / 20i —60j (1h) I‘\ a 5 o I“ I 6H 3-3mm 5 + (OS 2.0 k :2 — 034254094} A (TE ’5 x.» A 5C5 = E) “0-7031 + 0.39;T +0394 k m l’\ i - /\ | 1 Mg: ix 7* +YD>< (Zoneojfligi “WW 1 = 4i ~t’136834r3-759 L? RED: 4? [:39 “95 w} 4x N A >4 /\ + :2 :1 M Q I J an”? Céflflx)” "4‘ 7‘5 1% AG «i{—~39T +3 k 2% fr 1 , _, 1: ~0'Hé 1 “O93 j +0349? UJV+ Cg)\/+C3")"j 75- 7'» R : {11(0sz 1~O~%37?+~o-)§Gk> F : E Q~0~Héf~093§ +03%?) 2/ LJI BY CR§ bcfl 3 3%)th EWQIbXEMW) :; ,qx +0-3129—«o-He 13:0 ~63 5F? :0 V :9 Jay—«>937 F, 4393 F1: 0 '[email protected] 23:0 Q AZ +0336 F, +0-349EWSOC93“ 2’0 ...._ m N * ~53 'Z’Mfl[email protected]>f‘{7<5: :0 I O -—\ F.‘ :9 w: +71“? *ixgm ij Léj>>< ELOBIZmAO-‘BE’ZEHVQDNLQ A 7“ ~13 + C33) >< FLCATHS L——o-93j +0349?) . A Q + 0033 >< (“500% k) 1:: O '1": 15‘ W A TE; , :9 ~I‘%7ZF1L< + 0-936fit +0.92% +Z'79ZFL1 ~50003 £20 a A 9 {09361:} +Z‘79ZE~SOOO%) { + (~\.g7zfi+o.9zga§ :0 ZW\><: 0936?? +2792§~1~§ooogzo SQ ' QWCQ gMZ: 54872?) rko-azgfli:© N S), (\‘x 2;? LIL Rom QCV fig: Z‘OWP' 5 “H (g) W ~- RM ‘3ng 0936 F, +1732 (2-037 E) Z: 5000; :9 F: 27465 N FVWQW'é FL213064 N jfizjééaw A? FL:&§064N \ ...
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