Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Cam reshaped again - higher factor of safety but higher potential for asymmetry
Mathematical model of relationship of weight at bottom and angle of displacement
energy analysis and force analysis both establish that weight and angular displacement are inversely proportional
unable to determine current weight and buoy (currently waiting on sponsors to get back to us)
Fatigue analysis of follower - proved inconclusive, but a basic math analysis would suffice
Accomplishments from Previous Week
Established mathematical relationship between weight and angular displacement
Improved factor of safety on cam and follower
Fixed cam shape
Report is about 80% complete
Goals for Next Week (list names after each item). Use specific and measurable objectives.
successful preliminary design review presentation
90% design report completion
select proper values for weight and buoy
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
5/22, Zoom - when the mass of the weight increases, the mass of the buoy must also increase to provide more buoyant force
Reevaluated assumptions and relationship to verify that the model is still true (it is)
5/22, Zoom - redesign the follower so that the following is true
no action occurs until the follower goes past the halfway point of the cam rails
the travel distance twice the travel of the push rod
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
5/18, Zoom - We need to mathematically confirm that an increase in mass will help reduce the angle of displacement
Free-body diagram and force/energy analysis both confirmed the model
5/21, Zoom - You can do simple mathematical analysis in lieu of fatigue analysis for the follower
Confirmed limitations with sponsors
Verified that some changes may still be necessary
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Risks and Areas of Concern
We've asked 3 members of the MOD lab for the current weight and buoy used, but no one has replied
Resources or Information Required but not Available
current weight, buoy, and stopper in system
Schedule
Preliminary Design Reviews - 5/28, 4pm
Budget (list amount spent and amount remaining)
Progress on Report and Webpage
Report - roughly 80% complete, not counting formatting (that has to happen last anyways)
Webpage - filled out weekly report, worked on following pages:
Front page - added current follower mechanism
Final Design - added the races since those are finalized, added weight-buoy changes
Files - added free-body diagram and math of weight-buoy system