BV: Warping Analysis Cures Fatigue Cracking

Tuesday, December 07, 2004
Bureau Veritas says detailed warping analysis is the key to a crack-free new generation of containerships. "Some large containerships appear to be suffering cracking of longitudinals caused by fatigue and warping stress," says Pierre de Livois, technical director of Bureau Veritas Marine Division. "We are pleased that the many Panamax and post-Panamax containerships built with Bureau Veritas class show that extensive Finite Element Model analysis and attention to fatigue and structural details at the building stage have paid off. They are not showing this typical cracking in the side longitudinals."

De Livois says, "We have been able to incorporate all our positive experience into different series of containerships built this year in various shipyards. We were able to check the designs against the most recent developments of sophisticated fatigue analysis during the very preliminary design stage, and during the engineering detailed development. Our latest software tools for structural and fatigue analysis allow us to meet all class requirements in terms of scantling and connection details, and also help to achieve the best compromise in term of cost/benefit for both owner and shipyard." Ludovic Gerard, CMA CGM Newbuilding says, "This early stage approach, working closely with the class society on a new project, is without any doubt a safety and cost benefit scheme. In partnership, we for instance managed to decrease the fatigue restraints of our 5,770 TEU containerships built by Samsung in 2004, without any additional structural requirement."

Fatigue is a complex phenomena which requires careful feed-back experience analysis and continuous development of dedicated calculation methods and tools. Bureau Veritas has invested accordingly for a long time to achieve leadership in this field, and its experience in practice highlights the undeniable effects of design optimization and safety benefits shared by the shipowners and shipyards.

Maritime Today


The Maritime Industry's original and most viewed E-News Service

Maritime Reporter June 2016 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Legal

ECDIS Related Detentions on the Rise

ClassNK has been informed by Australian Maritime Safety Authority (AMSA) that during PSC inspections it has been increasingly reported that vessels have been detained

CMA CGM Crosses 90% Ownership Threshold in NOL

Container shipper CMA CGM S.A. has crossed the 90 percent ownership threshold in Neptune Orient Lines Limited (NOL), enabling it to bring the Singapore company private.

UAE Top Court: Physical Bunkers Suppliers Have No Right to Recourse against Owners/Charterers

The OW saga - UAE Federal Supreme Court decides that physical suppliers of bunkers have no right to recourse against Owners/Charterers. In the first decision

Container Ships

Essberger Fleet Moves to Marlink’s Sealink VSAT Service

The Hamburg headquartered John T. Essberger (JTE) Group will migrate the primary communication systems of its entire fleet to Sealink, Marlink’s global maritime broadband VSAT service.

EU to Accept Antitrust Offer from Maersk, MSC, 13 Others

World No.1 container liner Maersk, Swiss peer MSC and 13 other shipping firms are set to escape possible penalties as EU antitrust regulators plan to accept their offer to end a five-year probe,

EU to Accept Antitrust Offer From Maersk, MSC, 13 Others

World No.1 container liner Maersk, Swiss peer MSC and 13 other shipping firms are set to escape possible penalties as EU antitrust regulators plan to accept their offer to end a five-year probe,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Navigation Offshore Oil Pipelines Port Authority Salvage Ship Electronics Ship Repair
rss | archive | history | articles | privacy | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.0705 sec (14 req/sec)