Don Bradfield Josh Brown Royce Kranz Shawn Mooney Ashlee Palm

Team Charter  Objectives: Present an explanation of chapter 11 Produce a physical model of a problem and successfully solve  Time Frame: Assigned: Week 4 Due: Week 14  Scope of operation outlined in the project handout Tutorial Physical Model Virtual Model and solution

Voice of Customer  Three main learning styles Visual Auditory Kinesthetic  Most effective tutorial would appeal to the masses Survey of present engineering class

Student Surveys

Benchmarking  Survey had 1-4 scale  Compile data in table and rate against known success Kahn Academy tutorials  Determine the best tutorial option

Benchmarking *Khan AcadamyVideoAudioOutlineOutline/Audio Student Student Student Student Student Student Student Student Student Student Student Net Score Rank1543 * Reference

Problem Statement

Solution  Method of Virtual Work will be used  Procedure for Analysis 1. Free Body Diagram 2. Virtual Displacements 3. Virtual Work Equation

Solution

Cos = 0 = 90 0

Solution  The problem has two conceptual answers 13.9° and 90°  13.9° is the only realistic answer  At = 90°, the moment arm will interfere with the rest of the assembly

Physical Model  Built model has different dimensions than the book problem and thus a different solution

Physical Model

Physical Materials 1. 5 pound weight 2. Wood obtained from a barn 3. Cabinet handles 4. Spring 5. Rope 6. Steel pipe 7. Ball bearing pulley

Angle Measurement - TRIZ  Needed a way to measure the equilibrium angle  Principle of “Add another dimension”  Added a protractor and measurement device

Physical Solution

Video of Physical Model

Virtual Model

Video of Virtual Model

Mechanism Analysis  Pro/ Engineer has countless applications  Our team decided to use the Mechanism Application to conduct a Static Analysis to solve our problem

Virtual Solution  First, the a snapshot of the initial condition was taken

Virtual Solution Continued…  Next, a Spring with a Spring Constant of lbf/ft is defined. The Unstretched length of the spring is to be defined as the length when the moment arm is parallel with the base

Virtual Solution Continued…  A force of 5 lb is then defined at the weight

Virtual Solution Continued…  The virtual model will under go a static analysis

The Solution found using Pro/ Engineer :  After running a static analysis we will measure the angle. We received an angle of 8.53°