156B Week 4

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • came up with a better idea for container to be more easily and safely stacked

    • less overhanging parts

    • greater reduction in volume

  • FEA of the inner support

  • CAD the modified design for scaled model.

Accomplishments from Previous Week

• • research on materials for support columns (aluminum, steel, plywood) (Paul)

  • FEA of the inner support (Steven)

  • CADed new design for the scaled model (Robbie)

  • CADed and modified the integrated full scale design (Joey)

  • Research latches, hinges, quick release pin/plunges, supporting brackets. (Joey, Robbie, Alexis)

  • FEA attempts of the integrated design (Joey).

  • Selected part of final report (Alexis, Paul)

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • start ordering components (Paul, Joey, Robbie, Alexis)

    • support columns, wall panels (acrylic), flat head screws, latches or lock pins, t-slots

  • finish FEA of the integrated design (Robbie, Joey, Steven)

  • Finish CADing the scaled model (Robbie, Joey).

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • weight of current container = 2800 lbs

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • use metric units for presentations and put American units in parenthesis (April 18, in person)

  • look for different types of tubes (square tubing) for the supporting columns (April 18, in person)

  • reinforcements on the bottom (possibly pallet?) (April 18, in person)

  • what kind of plywood and what thickness is the company currently using? (April 18, in person)

    • 0.5'' thickness would be weak

  • see if there is a way to minimize the use of bolts -- people tend to lose them -- make it as "toolless" as possible (April 18, in person)

    • look for metal inserts (threaded inserts)

    • look for latches / lock pins

  • how to put wall and support columns together (April 18, in person)

    • liquid nails are not reliable

      • need very clean surface

    • put a bigger hole on the other side to have an access to the bolts

  • use see-through but not clear acrylic for the final model if decided to use acrylic (April 18, in person)

  • write correct pinching points (April 18, in person)

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • FEA the collapsed container. (April 11, in person)

Risks and Areas of Concern

• • Overhang of the ceiling might cause fracture when stacking the container. Coming up with a new design to fold the ceiling.

  • Too much labor needed for tooling/bolting when collapse. Researching for tool-less mechanism.

Resources or Information Required but not Available

Schedule

• • Finish material strength analysis (4/29)

  • Finish FEA the integrated design (pushed back to 4/27 from 4/24)

  • Start ordering parts (4/28)

Budget (list amount spent and amount remaining)

• • $ 114.52 Spent

  • $ 4885.48 Remaining

Progress on Report and Webpage

• • Up to date according to the 156B website schedule