Mechanical Engineers Handbook Episode 3 potx

... Members 171 3. Fatigue 1 73 3.1 Endurance Limit 1 73 3.2 Fluctuating Stresses 178 3. 3 Constant Life Fatigue Diagram 178 3. 4 Fatigue Life for Randomly Varying Loads 181 3. 5 Criteria of Failure 1 83 References ... C 2 2X29 EI y  R 2 2 hx À ai 2 À w 6 hx À ai 3  C 1 2 x 2  C 2 x  C 3 2X30 EIy  R 2 6 hx À ai 3 À w 24 hx À ai 4  C 1 6 x 3  C 2 2 x 2  C 3 x  C 4 X ...

Ngày tải lên: 13/08/2014, 16:21

... is a 11 L 2 3L 2 3EI 4L  3L 3 4EI Y a 22  4L 3 3EI Y a 33  a 11  11L 3 12EI Y a 21  a 12 Y a 13  a 31  7L 3 12EI a 23  a 32  a 12  a 21 X Table 3. 2 Mechanical model a 11  a 3 3EI a 22  l 3 3EI a 12  a 2 2EI 1 ... a 22 2F  a 31 m  q 1  a 32 m  q 2  a 33 m  q 3  q 3  a 31 F  a 32 2F X V ` X For complex geometry the coef®cients...

Ngày tải lên: 13/08/2014, 16:21

... pair, k rd (m 3 aN) Mass (kg) R 1 N 1 l 1 r 1 k  6 Â 10 À 13 m 1 R 2 N 3 l 2  l 1 r 2 k  6 Â 10 À 13 m 2 R 3 N 3 l 3 r 3 k  6 Â 10 À 13 m 3 R 4 N 4 l 4  l 3 r 4 k  6 Â 10 À 13 m 4 Table 4.1 Shaft Characteristics Diameter ... Q 2 Àc 1   Q 1 À  Q 2  J H 2  Q 2 Àk 1 Q 2 À Q 1 Àc 1   Q 2 À  Q 1 Àk 23 Q 2 À Q 3 Àc 23   Q 2 À  Q 3  J H 4  Q 3...

Ngày tải lên: 13/08/2014, 16:21

... reliability or customer care. Although you will be striving Management responsibility 1 03 auto201.qxd 10/04/00 21 :31 Page 1 03 Third party assessment 71 Requirement Implication for the auditor It is permissible ... Customer-focused organization l Leadership l Involvement of people Management responsibility 93 auto201.qxd 10/04/00 21 :31 Page 93 65 4.11 Is measuring equipment selected on...

Ngày tải lên: 13/08/2014, 15:21

... Axes 28 3. Moments and Couples 30 3. 1 Moment of a Bound Vector about a Point 30 3. 2 Moment of a Bound Vector about a Line 31 3. 3 Moments of a System of Bound Vectors 32 3. 4 Couples 34 3. 5 Equivalence ... . . . 38 5 3. 1 Mechanical Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 6 3. 2 Mathematical Models . . . . . . . . . . . . . . . . . . . . . . ....

Ngày tải lên: 13/08/2014, 16:21

... length. Substitution of Eqs. (2 .33 ), (2 .34 ), and (2 .35 ) into Eq. (2 .31 ) results in dn ds À 1 r t  1 T bX 2X37 The derivative of b, db ds  t Á db ds  t  n Á dn ds  n  b Á db ds  bY 2X38 may be obtained ... the magnitude of v. Using Eq. (3. 18) one may write Eq. (3. 17) as F Á dr  1 2 mdv Á v 1 2 mdv 2 X 3X19 Figure 3. 6 80 Dynamics Dynamics If e  0 in Eq. (3. 5...

Ngày tải lên: 13/08/2014, 16:21

... s min 2 3X12 s a  s max À s min 2 X 3X 13 The stress ratios R  s min s max A  s a s m 3X14 are also used to describe the ¯uctuating stresses. 3. 3 Constant Life Fatigue Diagram Figure 3. 3 illustrates ... Acceleration Analysis 211 3. 1 Driver Link 212 3. 2 RRR Dyad 212 3. 3 RRT Dyad 214 3. 4 RTR Dyad 215 3. 5 TRT Dyad 216 4. Kinetostatics 2 23 4.1 Moment of a Force about a Po...

Ngày tải lên: 13/08/2014, 16:21

... r D ÂF 3  M 3  0Y or k x C À x D y C À y D 0 F 23x  F 43x F 23y  F 43y 0                k x C 3 À x D y C 3 À y D 0 F 3x F 3y 0                M 3 k  0X 4X36 For ... gear 3 at F is known: F 34 ÀF 34 ÀF 34 sin f À F 34 cos fkX The unknowns are the reactions of the planets gears 2 and 2 H on the planet arm at C and C H : F 23  F 23r...

Ngày tải lên: 13/08/2014, 16:21

... 1.56 3. 05 1.28 1.66 2.85 17 1 .32 2.70 3. 75 1 .36 2.20 3. 55 2.12 3. 80 4.90 20 2.25 3. 35 5 .30 2.20 3. 05 5.8 3. 30 4.40 6.20 25 2.45 3. 65 5.90 2.65 3. 25 7.20 3. 70 5.50 8.5 30 3. 35 5.40 8.80 3. 60 6.00 ...  pd 4 32 X 3X32 For a solid rectangular section, J  bh 3 12 X 3X 33 For a solid round rod of diameter d, Eqs. (3. 29), (3. 30), and (3. 31) become t  16T pd...

Ngày tải lên: 13/08/2014, 16:21

... is the cubic pro®le m  p 3 Àp 2 a2, which yields D  d T d  0X977 Pr À1a3 3X88 h  0X3 23 k x Pr 1a3 Re 1a2 x 3X89 Nu L  hx k  0X3 23 k x Pr 1a3 Re 1a2 x X 3X90 2. Low-Prandtl-number ... 0X977Pr À1a3 1 À x 0 x  3a4 ! 1a3 X 3X120 For x 0  0 this result coincides with (3. 88). The local Nusselt number is then Nu x  hx k  0X323Pr 1a3 Re 1a2 x 1 À x 0 x  3a4 ! 1a3 X 3X12...

Ngày tải lên: 13/08/2014, 16:21