Question

Only row b

A general fourbar linkage configuration and its notation are shown in Figure P6-1. The link lengths, coupler point location, and the values of 2 and w, for the same fourbar linkages as used for position analysis in Chapter 4 are redefined in Table P6-1, which is the same as Table P4-1 (p. 215). For the row(s) assigned, draw the linkage to scale and find the velocities of the pin joints A and B and of instant centers 11.3 and 124 using a graphical method. Then calculate w3 and w4 and find the velocity of point P. FIGURE P6-1 Configuration and terminology for the pin-jointed fourbar linkage of Problem RP 04 02 02 04 TABLE P6-1 Data for Problem 83 Row Link 1 6 b7 C 3 Link 2 2 Link 3 7 3 6 Link 4 02 02 9 30 10 885-12 8 45 -15 Rpa 6 10 10

Answer 1

Links - 3.5am, Link2= 4.5cm, Linka 1.5cm, 454cm Scale: 0.5cm= 1 unit (tomzunits I 13 123 A SVA NON 112 685 O 04 13 com be found by intersection of 1,2122 and 114.143 I 24 com be found by intersectionof 1121 14-omd 13134 VA-W2x02A = 12*9=108 units Point A cambe assumed on Links also, VA= 113 AxW3 113 A=0.3 cm (on measuring 3= 108 =0.9x2 units og= 61. Srad/ (Posit we as sense of rotation is cow lohich com be guessed from vector TÀ Vp= W38 IBP = 67.5(4.3x2) = 648 umits [Vp- 648 units Verwax TBB = 67542-1x29= 223. 5 units ponto com be assumed on eink 4 as well, VB = War t4 B 4= 282.5 = 35.44 rad/s 8 4 - 35.4 4 radis 1 (negative since senseof rotation is cw)