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This project involves designing a dual gear leverage system to achieve a specific displacement. It includes modeling, analysis, and choosing appropriate materials with a safety factor evaluation.
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EGR 345 Analysis ProjectSystem #5 Lee C. Groeneweg Grand Valley State University Padnos School of Engineering Professor: Dr. Hugh Jack December 10th, 1998
Introduction A dual gear leverage system with an applied torque to the right side gear resulting in vertical displacement of the moment arm.
Design Objective Find a length of R1 for the left side moment arm so that the maximum displacement of X2 approaches a length of R2, 0.4 meters.
Free Body Diagrams Left side FBD Right side FBD
Modeling and Analysis • Draw Free Body Diagrams. • Develop Differential Equations. • Relate the two equations to each other using contact force relationship. • Develop gear relationships. • Solve for output variable, R2, using Runge-Kutta technique in Mathcad.
Design • Observe X2 displacement by varying torque applied. • Observe trend of X2 velocity. • Choose Design material. (stainless steel, alloy 405 - 1 inch square bar ) • Determine Factor of Safety.
Summary • System’s response modeled as differential equation. • Design Value of R2, 0.6 meters obtained. • Design Material chosen. (stainless steel, alloy 405 - 1 inch square bar ) • Factor of Safety acceptable. Additional note: • Torque minimum of 39.235 Nm for positive displacement.