156B Week 3

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

• • Vibrational analysis yielded a big issue with damping. We redesigned approach and added a damping chain to the system

Accomplishments from Previous Week

• • Thermal expansion (completed)

  • Vibrations analysis (In progress): Discussed idea with Professor Murakami

  • More efficient group size

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

• • Rotterdam research (Sponsor)

  • Cost Analysis (Alex)

  • Slip calculations/Fixturing (Jonathan)

  • Complete Vibrational analysis (Alex & Jonathan)

  • Start FMEACA analysis (Alex & Jonathan)

  • Look into creep (Adam)

  • Look into chain sleeves (Adam)

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

Feedback provided in meeting after class Tuesday 1/24/17

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 (using for new analysis)

  • slides need to tell the story (will address next presentation)

  • Only show images you can read (will address next presentation)

  • Define variables (will address next presentation)

  • Min/max angles of chains (in progress)

  • Consider slack

  • Don’t use “cheap”, use “low cost”

  • Thermal expansion, define range (Completed analysis)

  • Vibration, define excitation (first mode outside 20Hz)

  • Prepare for loosing a line for repair or accident (Added a second chain and chain sleeve)

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

Not provided from last presentation

Risks and Areas of Concern

• • Vibration damping

  • Over Constraint (pretension in spring damper system and increased tension due to thermal expansion and creep)

  • Scale model

Resources or Information Required but not Available

• • N/A

Schedule

• • This week, Due 1/27

  • Rotterdam research (Sponsor)

  • Cost Analysis (Alex)

  • Slip calculations/Fixturing (Jonathan)

  • Complete Vibrational analysis (Alex & Jonathan)

  • Start FMEACA analysis (Alex & Jonathan)

  • Look into creep (Adam)

  • Look into chain sleeves (Adam)

  • finish all analysis (1/30/17)

  • Final Design choice CAD designs/simulations (2/6/17)

  • FEM

<model design phase>

• • complete design of model demonstration (2/13/17)

  • Scaling (depends on what model we make: superficial or testing of a component)

<start model production phase>

• • test and optimize components of model demonstration (2/27/17)

  • finish model demonstration (3/17/17)

  • Project presentation (3/22/17)

Budget (list amount spent and amount remaining)

• • Amount spent: $0

  • Lab fee: $1,800

  • Amount Remaining : $8,200

Progress on Report and Webpage

• We will continue to work on the report.

  • We have uploaded a lot of information to the internal side of the webpage.

  • The webpage still requires some work all around.