156B Week 5

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

• • Completing Analysis for Large Scale Design

  • Creating CAD + Simulations of Design

  • Entering Small Scale Design Phase

Accomplishments from Previous Week

Rotterdam Research: (the dry dock that uses chains although with no calculations)

How much work do you punt into preparation of the dry dock?

Depends on the vessel, but approximately 3 to 4  hours.

How many people are required in preparation to dry dock?

We have 2 (two) colleagues on each dry dock.

How many people are required during the operation?

The same two colleagues.

How do you attach the chains to the ship? Does the chain have a pad eye? Can you provide a picture?

There are hooks on chains, which are fastened to the buoy, or slings are secured to the hooks, and the

slings are then fastened to the bollard of the ship.

How is the chain attached to the dock?

The chains are secured to handwinches. The handwinches are fixed to the dock.

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

• • Finalize Large Scale Design 

  • Figure out what we're going to build for scale model

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

• • Talked about cost analysis (he gave us some critical values)

  • We talked about new feedback from Rotterdam (posted above)

  • Talked about the minimum tension requirements (we are still looking into this)

  • We talked about our presentation for next week (expectations etx)

  • We talked about what we will need to build as a demonstration (a physical demonstration of vibrations is on the table)

  • We talked about some other requirements (possible systems for utilizing rubber blocks, an in-haul system, adjustment-ability for alternate sized ships, and automation of systems)

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

• • Use cable in wire (in case of chain failure) as substitution of chain sleaves

  • How the catenary equation effects the Vibrations analysis 

    • unlinearizes the k

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

• • Tension System

  • Small Scale Component to Demonstrate

  • Other Possible Secondary Design Components 

  • (Pulley, Automation, In-Haul)

Resources or Information Required but not Available

• • N/A

Schedule

• • Finalize Large Scale Design (2/10)

  • Pick Out Parts for Large Scale Design (2/17)

  • Design Small Scale/Dimensional Scaling Analysis (2/17)

  • Purchase/Build Small Scale Model (3/3)

  • Cost Analysis/Failure Mode Analysis (FMECA) (3/10)

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.