A beam engine utilizes 2 main mechanisms: Four-bar and slider-crank. A schematic showing the four-bar linkage in a typical beam engine is shown in the following figure. Given: • Link lengths: Link O₂A = 5 cm, O4B = 15 cm, 0204 = 25 cm, AB = 20cm Positions: 0 145°, 8=35°. a) Draw the vector loop and write down the vector loop equation b) Calculate the local angular position of the crank O2A. c) Calculate the local angular position of the rocker O4B. d) Calculate the global angular position of the coupler AB. e) Deduce the configuration (opened or crossed). Y 02 B 04 Position, Velocity and Accleration Analysis: Pin-jointed Fourbar linkage 002 041,2 = 2 arctan • A • • VB VBA VBA VB VA (b) R3 b R4 A 03 x C 0 a R2 02 R1 Position Analysis Ол 004 - X -B±√B2 4AC -E±√E² 4DF 031.2 =2 arctan 2A 2D • D= cos 2-K₁ + K4cos02 + K5 E = -2sin02 FK₁(K41) cos02 + K5 cose₂-K₁- K₂cosе₂ + K3 • B = -2sin02 CK₁(K₂+1)cos0₂ + K3 • K₁₁ = • K₂ = a²-b²+c²+d² . K3 = 2ac K₁ = • K₁₁ = b c²-d²-a²-b2 K5 = 2ab PS: if is calculated before you can use one of the equations below to solve for 03 bcos03=-acos02 + ccos04 + d bsin03 = -asin02 + csin04 aw2 sin(02-03) 004 = c sin(04-03) Velocity Analysis aw2 sin(04-02) 003 = b sin(03-04)
A beam engine utilizes 2 main mechanisms: Four-bar and slider-crank. A schematic showing the four-bar linkage in a typical beam engine is shown in the following figure. Given: • Link lengths: Link O₂A = 5 cm, O4B = 15 cm, 0204 = 25 cm, AB = 20cm Positions: 0 145°, 8=35°. a) Draw the vector loop and write down the vector loop equation b) Calculate the local angular position of the crank O2A. c) Calculate the local angular position of the rocker O4B. d) Calculate the global angular position of the coupler AB. e) Deduce the configuration (opened or crossed). Y 02 B 04 Position, Velocity and Accleration Analysis: Pin-jointed Fourbar linkage 002 041,2 = 2 arctan • A • • VB VBA VBA VB VA (b) R3 b R4 A 03 x C 0 a R2 02 R1 Position Analysis Ол 004 - X -B±√B2 4AC -E±√E² 4DF 031.2 =2 arctan 2A 2D • D= cos 2-K₁ + K4cos02 + K5 E = -2sin02 FK₁(K41) cos02 + K5 cose₂-K₁- K₂cosе₂ + K3 • B = -2sin02 CK₁(K₂+1)cos0₂ + K3 • K₁₁ = • K₂ = a²-b²+c²+d² . K3 = 2ac K₁ = • K₁₁ = b c²-d²-a²-b2 K5 = 2ab PS: if is calculated before you can use one of the equations below to solve for 03 bcos03=-acos02 + ccos04 + d bsin03 = -asin02 + csin04 aw2 sin(02-03) 004 = c sin(04-03) Velocity Analysis aw2 sin(04-02) 003 = b sin(03-04)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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