Cantilever Children Swing Roberto Aviles Ileana Perez Rada
Cantilever Children Swing Roberto Aviles Ileana Perez Radaí Mendoza The space saving device
Agenda • • Why do we made this design? Applications Engineering Considerations Uniqness Challenges Weakness What was learned?
Why do we made this design? • • Is a new type of swing design Is a constructive idea It is space saving Entertain and have fun
Applications • For children from 6 to 13 years • It supports a weight up to 300 pounds
Engineering Considerations • • The safety Factor The material used Durability Cost Effective
Material Selection Variables we considerate for selecting the Material • • Ultimate and yield strength Density Hardness Cost/unit weight
Material Selection • Strength/weight ratio • Epoxy , Ultra high strength steel , Titanium , Low-carbon steel • Wear resistance • Ultra high strength Steel , Titanium , Gray cast iron , Low carbon steel • Cost/unit weight • Gray cast iron , Low carbon steel , Ultra high strength Steel
Assembly
Beam Dimensions
Deflection Analysis
Forces that are acting on the four principal surfaces of the Cantilever Base Beam A B D C
Safety Factor • • The safety factor at A is 1. 657 The safety factor at B is 1. 732 The critical point is at point A The safety factors are reasonable for the design
Safety Factor Analysis
Uniqness • • Space saving Light weight Easy to install Durable
Challenges • Obtain the appropriate safety factors • Determine the design dimensions • Consider the effects of the forces on the design • It was a custom made design • Infinite Life
Weakness • It is static • Appearance
Improved Design Assembly • Pivotal Movable Design
What was learned? • Computer Programs – – Math. CAD Solid Works MD Solids Cosmos • Even simple Mechanisms need hardworking design • Small changes in the dimensions of the design and changes in the materials produce a huge effect in the safety of our material • Team Organization
Questions ?
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