RUBBERMAID ON WHEELS

Aero E 423Jace Indrelie, Ben Mac Murray, Alex Smith

Design ConstraintsPurpose: replace Larry Genalo’s Materials

Engineering demonstration kit

Want to hold and transport around 50 lbs of materials

Integrate into demo by standing on completed container

Design Edges & corners will see

the largest stress concentrationDouble layer of plies at

these points

Risk of sides buckling while standing on top for demoUsed foam core to increase

bending stiffness

-0.16 -0.14 -0.12 -0.1 -0.08 -0.06 -0.04 -0.02 0

-35

-30

-25

-20

-15

-10

-5

0f(x) = 219.880744178182 x − 0.264396262661039R² = 0.963740749454467

Stroke (in)

Dow

nfor

ce (l

bf)

Mold

Apply First layer

Blueboard foam core

*Inserts not shown

Second layer

Completed with inserts

Complete with wheels and lid attached

Problems Encountered Thin layer of plaster is infused with interior surface.

Complete removal will damage inner wallUse release agent or release film

Difficult to create smooth fiber layer around complex geometryCut plies to exact shapeUse different manufacturing method

Ran out of epoxy - top edge of container was unfinished

Questions?