mec411_termW07

# mec411_termW07 - draw a velocity diagram F in Scale 1:20 F...

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Name: ID: Section: Ryerson University, Department of Mechanical and Industrial Engineering MEC 411 Midterm, W2007; Instructor: S. Yu; Duration: 1 hr 50 minutes This examination is OPEN BOOK. All types of but non-communicating calculators are permitted. Question 1 [25] For the mechanism shown below, determine the mobility, value of one transmission angle, range of motion of the first follower in degrees. [15] Input link Scale 1:5

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Question 2 [25] For the six bar mechanism shown below, identify all instant centres on the diagram, and compute the angular velocity of the output link using I 2,6 if the input link rotates at 1800 rpm. Scale 1:5 Input link Output link Page 2 of 6
Question 3 [25] A mechanical press is designed to exert large forces to insert a small part into a larger part. Determine the force produced at the press head if a force of 1000 N magnitudes is applied to the handle. Suggestion: assume a unit input angular velocity (1 rad/s) and use the available space to

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Unformatted text preview: draw a velocity diagram. F in Scale 1:20 F out Page 3 of 6 Question 4 [25] A crank-slider mechanism is shown below. The crank length is 30 mm. The length of the connecting rod is 110 mm. The off-set between the centerline of the piston and the crankshaft is 15 mm. The crank rotates counterclockwise at a constant speed of 180 rpm. Part 1 (19) For an arbitrary crank position, determine (a) the (linear and angular) positions of the piston and the connecting rod, (b) the angular velocity of the connecting rod and the linear velocity of the piston, (c) the angular acceleration of the connecting rod and linear acceleration of the piston. Part 2 (6) Determine values of all quantities in (a), (b) and (c) for θ 2 = 60 ° . Not to scale. B A θ 3 r 3 ω 2 r 2 θ 2 r 1 s Page 4 of 6 Page 5 of 6 Page 6 of 6...
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## This note was uploaded on 02/20/2011 for the course MEC 411 taught by Professor Shudong during the Winter '11 term at Ryerson.

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mec411_termW07 - draw a velocity diagram F in Scale 1:20 F...

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