Rigging Follow-On (2015-401)
- General Dynamics NASSCO
- San Diego State University
September 2014 - September 2015
NSRP ASE Investment: $750K
Industry Investment: $438K
This project expands upon the series of successfully completed NSRP projects which focused on rigging operations and associated padeye attachments. The project team will perform basic research related to lifting attachment devices used for ship construction, with the emphasis on performing full-scale or near full-scale structural tests of lifting components with several application methods that utilize similar structure, as well as actual ship structure. Of particular interest is to capture the effects of different loading scenarios, for various padeye shapes and alignment configurations.
There are three distinct phases of this project:
- Phase 1 will consist of testing stiffened and unstiffened elements, as well as weak axis loading.
- Phase 2 investigates the response of padeyes with different plate thickness to internal structure thickness, internal stiffened brackets, internal connection under padeye, double plate padeye and padeyes of different shapes.
- Phase 3 involves structural testing of padeyes made from different materials than steel, including aluminum, bronze and nickel. All three phases will involve prediction analyses, structural testing and post-test analyses
The primary objective of the research will be the creation of design aids for developing lifting attachments and supporting structure, thus enabling rigging engineers and others responsible for the development of rigging lifting arrangements to safely and more effectively accomplish these vital shipyard operations. Design aids will consist of results of laboratory testing, including static loading to failure and dynamic loading, hand calculations and finite element modeling. Design methods will also be provided, giving a shipyard-neutral, standard approach available across the industry.
Point of Contact:
Joshua Reece, General Dynamics NASSCO