Cantilever Children Swing The space saving device Roberto Aviles Ileana Perez Radaí Mendoza

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 Ultimate and yield strength Density Hardness Cost/unit weight Variables we considerate for selecting the Material

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 BD C

Safety Factor The safety factor at A is The safety factor at B is 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 –MathCAD –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 ?