EMCH 332 University of Nairobi Kinematics & Dynamics Questions

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Engineering

EMCH 332

University of Nairobi.

EMCH

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This assessment is copyrighted by the Univ of South Carolina and Dr. Rocheleau and is not to be uploaded to any website; especially cheating websites such as Chegg, Course Hero, Yahoo Answers, and other such cheating websites. This assessment is to be done individually with no outside help or collaboration. Violating this directive is cheating and when you are caught—and you will be caught—will result in automatic failure of the course. If you have questions, do NOT ask a fellow student, contact Dr. Rocheleau. Assessment One EMCH 332 Kinematics and Dynamics Due: 11:59 p.m. Monday March 01, 2021via Blackboard Open Book/Open Notes 4 pages - 100 points Degrees of freedom analysis Recall for planar 2D Mechanisms; DOF = 3(L−1)−2J1−J2 State L, J1 and J2 for each of the following mechanisms. Note mechanism B has multiple joints. 1) L = __ 2) J1= __ 3) J2 = __ 4) DOF=__ (25 points) 5) L = __ 6) J1= __ 7) J2 = __ 8) DOF=__ Answer these Degree of Freedom analysis problems by inputting integer numbers in questions 1 through 12 on Blackboard 9) L = __ 10) J1= __ 11) J2 = __ 12) DOF=__ 1 This assessment is copyrighted by the Univ of South Carolina and Dr. Rocheleau and is not to be uploaded to any website; especially cheating websites such as Chegg, Course Hero, Yahoo Answers, and other such cheating websites. This assessment is to be done individually with no outside help or collaboration. Violating this directive is cheating and when you are caught—and you will be caught—will result in automatic failure of the course. If you have questions, do NOT ask a fellow student, contact Dr. Rocheleau. 13) Three Position Synthesis with fixed pivot points. Given: Three positions of a coupler, and fixed ground locations. Find: a) Design a 4-bar linkage to achieve the 3 coupler positions shown below. Show 3 separate drawings: i) Construction; ii) Extended and iii) Overlapped (15 points) b) Place a driver dyad on the mechanism. (10 points) O4 O2 Upload your 3 drawings (construction, extended and overlapped) to this synthesis problem as a pdf FILE to question 13 on Blackboard 2 This assessment is copyrighted by the Univ of South Carolina and Dr. Rocheleau and is not to be uploaded to any website; especially cheating websites such as Chegg, Course Hero, Yahoo Answers, and other such cheating websites. This assessment is to be done individually with no outside help or collaboration. Violating this directive is cheating and when you are caught—and you will be caught—will result in automatic failure of the course. If you have questions, do NOT ask a fellow student, contact Dr. Rocheleau. ANALYTICAL Analytical Four bar position analysis ANALYTICAL Given: A four bar mechanism below. All link lengths are in centimeters. Set the input link angle to 40° and analytically calculate 3,open and 4,open; then 3,cross and 4,cross (25 points) 10 cm 7 cm 6 cm O2 O4 9 cm 14) 3,open = ______ (degrees to 3 decimal places) 15) 4,open = ______ (degrees to 3 decimal places) 16) 3,cross = ______ (degrees to 3 decimal places) 17) 4,cross = ______ (degrees to 3 decimal places) Answer this Analytical Four Bar Position analysis problem by inputting real numbers to 3 decimal places to questions 14 through 17 on Blackboard. Do not upload your work but save it in case it is requested after the assessment. 3 This assessment is copyrighted by the Univ of South Carolina and Dr. Rocheleau and is not to be uploaded to any website; especially cheating websites such as Chegg, Course Hero, Yahoo Answers, and other such cheating websites. This assessment is to be done individually with no outside help or collaboration. Violating this directive is cheating and when you are caught—and you will be caught—will result in automatic failure of the course. If you have questions, do NOT ask a fellow student, contact Dr. Rocheleau. ANALYTICAL Analytical Crank Slide Position Analysis ANALYTICAL Given: A crank slide mechanism is shown below. All link lengths are in centimeters. Set the input link angle to 40° and analytically calculate 3,open and d,open ; then 3,cross and d,cross (25 points) 6 cm 11 cm O2 5 cm 18) 3,open = ______ (degrees to 3 decimal places) 19) dopen = _______ (cm to 3 decimal places) 20) 3,cross = ______ (degrees to 3 decimal places) 21) dcross = _______ (cm to 3 decimal places) Answer this Analytical Crank Slide Position analysis problem by inputting real numbers to 3 decimal places to questions 18 through 21 on Blackboard. Do not upload your work but save it in case it is requested after the assessment. 4 X Bb Exam 1 + Х x Content sc.edu/ultra/courses/_1121485_1/cl/outline What is theta_4_crossin degrees to 3 decimar places) Selected Answer: 199.518 Correct Answer: -119.4 Answer range +/- 0.2 (-119.6.-119.2) Question 18 For the analytical crank slide mechanism shown on page 4 of the assessment... What is theta_3_open = ? (in degrees to 3 decimal places) Selected Answer: 53.628 Correct Answer: 126.4 Answer range +/- 0.2 (126.2 - 126.6) Question 19 the analytical crank slide mechanism shown on page 4 of the assessment... What is d open-? (in centimeters to 3 decimal places) Selected Answer: 11.119 Correct Answer: 11.12 Answer range +/- 0.2 (10.92 - 1132) Question 20 For the analytical crank slide mechanism shown on page 4 of the assessment... What is theta 3_cross = ? (in degrees to 3 decimal places) Selected Answer: 126.372 Correct Answer: 53.625 Answer range +/- 0.2 (53.425 - 53.825) Question 21 For the analytical crank slide mechanism shown on page 4 of the assessment... What is d cross? (in centimeters to 3 decimal places) Selected Answer: 1.927 Correct Answer: -1.927 Answer range +/- 0.2 (2.127. 1.727) Monday, March 8, 2021 4:56:31 AM EST HW3 Due_Mart (1).pdf HW3 Due Mar1.pdf
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