Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Discussion of group's approach to comments received during the Risk Reduction Presentation
concern: Lip removal may jeopardize structural integrity of the ATC
must further analyze and evaluate the FEA results and significance there of
Accomplishments from Previous Week
successful "risk reduction" presentation
Goals for Next Week (list names after each item). Use specific and measurable objectives.
CAD team (Andrew, Seungmin, Jonathan): lip removal hazard? If yes, alternate design necessary?
Daniel: material/manufacturing quotes for current ATC; also get quote if ATC were alumnium (if this material, how thick? how heavy? Feasible?)
Laura: contact sponsor to receive feedback on our "risk reduction" presentation
update gantt chart. Continue with current discussion within group regarding most effective scheduling of tasks and goals. Maintain a running discussion of most effective scheduling choices, also taking into account possible obstacles and having a contingency plan.
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
FEA analysis needs to be analyzed and interpreted for significance
no price points found (get quotes)
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
student commented during "risk reduction" presentation, inquiring about the value of the dolphins
Risks and Areas of Concern
Effect of lip removal, and possible alternate designs: will expand of FEA with various loading scenarios (Need definitive answer, if lip removal is possible)
determine feasibility of proposed material options
determination of most effective topic selections for the "individual component analysis"
Resources or Information Required but not Available
Schedule
week 3: be completed with initial draft of final design, with design modifications, alternate materials, etc.
interact with sponsor to get feedback on "risk reduction" presentation
Budget (list amount spent and amount remaining)
Progress on Report and Webpage
Objective: create a space on the webpage where all members have a designated section in which they can update the group on current progress, provide links and explanations for any resources found, short summary of information received and contacts made during technical outreach calls, etc. In essence, create a discussion space which is organized and segregated by the topic of focus.
Review of team meeting before the meeting with Professor Delson + Pedro:
-Set up meeting with Pedro to help us with CAD. Sample questions: What constraints does the model need? What are the pros/cons of Inventor/Solidworks? Verify the forces and moments are in the right place? How-to know that our model is indeed the "worst-case scenario" ?
-Laura's request:
To keep everyone up to date on what new information we have found (and just to keep all information organized and easily accessible to everyone), please write a summary (at least once per week) of what work you did on the ATC project. This would include... 1) What work you. 2) The reason for doing this work. 2) The results of this work. What questions were answered? What new questions/concerns were brought up? What impact does this new information have on our future decisions, etc.
CAD: Please write summary of the CAD and what numbers/math was used, and what the results were.
Interviews: Please write summary of who was spoken to, what they said, what their name was (if you know), the name of the company, etc.
Design Ideas: Anyone who has a design idea, please put a pic of the idea on the website somewhere, and an explanation of the pros/cons of that idea.
Current Gantt Chart:
-Beginning of 3rd week: Have 1st draft of final ATC design due
-End of 3rd week: Have final ATC design due
-End of 4rth week: Finish researching manufacturers and find their approximate time of fabrication for the new ATC.
Assigning Roles: There is an interest in assigning leaders of certain roles:
-liaison: Laura
-website updater: ???
-CAD expert: Andrew
-Materials expert: Daniel
-Scheduler (IE someone who reminds us of what stuff is due and when): ???
-Treasurer: ???
Individual Component Analysis:
Chris: Tie-Down Hook
Daniel: Materials and Manufacturing of fiberglass and carbon fiber.
Laura: Steel-beam support at ATC base. Or buckling. leaning towards buckling. dunno what to do for the steel beam supports.
Andrew: FEA analysis on fiber-glass and foam.
Jonathan: ???
Summary of meeting with Professor Delson and Pedro on 3/31:
On making our designs easy to explain to noobs:
-create a small scaled 3D model of the ATC , both the original version and possible design solutions.
-In the risk reduction presentation, it wasn't obvious from the images on the slides that the lip was what prevented the ATC from being placed onto the airplane.
On CAD Analysis:
-How-To Finite Element Analysis: 1) CAD the existing ATC using fiberglass and/or aluminum. Relevant issues include: Does making the ATC a shell make the model stronger or weaker? Is it better to make the CAD model hollow or solid? Which is the worst-case scenario? 2) Perform fatigue and buckling analysis on the CAD models using the correct forces and moments. 3) Validate these results using some "closed-form" equations from a book, showing the results are similar.
-If the FEA analysis is too short and easy you are probably doing it wrong.
-If the modelling program asks you to shell the model, then perhaps alter the mesh size to get more accuracy (not sure what this meant but hopefully you know Andrew, lol)
On Materials:
-Research how others have analyzed the strength of foam filled fiberglass. If there is an article on this, print it out, highlight the relevant sections, and bring to class.
-There may be books existing that describe how to do FEA analysis on fiberglass. If they exist, find them.
On Manufacturing Time: !!! important !!!
-It is very important to find out the estimated manufacturing time for the ATC. Don't worry too much that the manufacturer has the exact model, just make sure you get the approximate time of manufacture ASAP.