Alliance applies FEA to shipbuilding processes
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NEi Software product story
Edited by the Engineeringtalk editorial team
Jun 1, 2006
Noran Engineering is working with ShipConstructor Software to develop a program that will enable safe, damage free lifting and handling of ship components during construction.
Noran Engineering is working with ShipConstructor Software to develop a program that will solve a major production problem in shipyards with safe, damage free lifting and handling of ship components during construction.
The US Navy will fund this effort through the Small Business Innovative Research program (SBIR).
In shipyard construction, significant costs are incurred and valuable production time is lost in repairing components that are distorted when moving material and interim products within the yard.
Lifting and handling procedures typically are the result of acquired knowledge by long time employees.
This valuable information and expertise is acquired mainly through trial and error and is subject to loss through attrition or reassignment in the workforce.
The new software, code-named ShipLift, will automatically calculate the proper pick up points and maintain a digital knowledge base that will always be available.
A streamlined 3D product data model of the structure will be created in ShipConstructor's design software.
NEi Nastran FEA will analyse the model for stresses and strains on the plates, subassemblies and full assemblies.
Pick up points will then be identified that provide safe, distortion free lifting and handling.
The lifting calculation results and operator handling instructions are then written back to the ShipConstructor product data model database utilising the new ShipConstructor API with time stamps.
Thus the product data model is the central repository for this information and changes to the model will trigger requests for redoing the NEi Nastran FEA calculations.
Patrick Cahill, President and CEO of ShipConstructor Software USA, remarked on the project: "We are excited to have the opportunity to bring this tool to the shipbuilding industry".
"Shipyards can become more efficient, eliminate the high cost of rework, avoid expensive disruptions in their production cycles, and provide more timely delivery to customers".
Dave Weinberg, CEO of Noran Engineering, added: "This project is a good illustration of how our NEiNastran FEA software can easily and economically be modified to accomplish value added tasks for the entire shipbuilding industry".
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