156B Week 1
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Fabrication and testing will be done by a future team; the scope of this project will focus only on design and analysis of the centrifuge
Timeline of testing and final deliverables TBD
Accomplishments from Previous Week
CAD was updated further by Peter
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Have an updated Gantt chart by next sponsor meeting (David)
Have some design ideas for a more configurable mounting design that accommodates all box sizes
Establish new project scope and timeline
Assign failure analyses and deliverables
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
From 4/5/20 meeting:
Weekly meeting time tentatively set at 11:30am Tuesdays
Analyses to be included in final deliverables: (also discussed at 4/7/20 internal meeting)
Static on components
Bearings
Shaft
Arm
Experiment/counterweight mounts
Dynamic loading on components
See above
Modal analysis
Effects on acceleration experienced by experiment
Vibrations through the floor?
Rigid vs. passively damped mounting
Effects of imbalances in the system on overall resonance
Acceleration curves
Closed-loop based on “generic profile”
Mounting to the floor
Shear load from vibrations?
Fatigue?
Failure Modes Analysis
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Scope of the project has been redefined as the COVID-19 situation has forced the closure of on-campus machining resources. (3/31/20)
Further literature review is current priority in order to establish the correct equations of motion (3/31/20)
Should try to design for low cost as much as possible (3/31/20)
Manufacturing may be outsourced or may be a future MAE 156B project
Need to show/prove acceleration profile before manufacturing
Need to decide which softwares are appropriate to meet specifications (3/31/20)
Solidworks FEA is not robust enough --> suggested NASTRAN (pending software license to use remotely)
ANSYS is also an option
Matlab/Simulink for controller design and dynamic behavior of the system
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Should try to design for low cost as much as possible
Need to make sure dynamic system behavior will not introduce significant error in acceleration profile
Literature review
Resources or Information Required but not Available
Need further literature on centrifuge design
Schedule
Meet to discuss failure analysis/design schedule.
Update Gantt chart.
Budget (list amount spent and amount remaining)
N/A
Progress on Report and Webpage
Weekly Progress Reports