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87,000 DWT Bulk Carrier Hull Structure Design Based on CSR.

Author: ZhengXinBin
Tutor: WangDeYu；ZhangHuiPing
School: Shanghai Jiaotong University
Course: Naval Architecture and Ocean Engineering
Keywords: CSR bulk carrier structure strength finite element analysis calculation
CLC: U674.134
Type: Master's thesis
Year: 2012
Downloads: 103
Quote: 0
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Abstract


On June thirteenth 2005, IACS(International Association of Classification Society) members held meetings on Common Structure Rules (CSR) of JBP and JTP, and arrived conclusions that all members would approve the JBP and JTP rules on October first 2005, and the intellectual property rights of the rules belonging to all IACS members. The rules would come into force since the date of April first 2006. Then, the construction contract of bulk carriers over 90 meters and oil tankers over 150 meters signed on and after that day must comply to the IACS Common Structure Rules.Because of the constraint of the Rules and the intensively competition, more big enterprises put a lot manpower and money to study the Rules after it came into force. They cooperated with ship design institutes and class societies to develop new ships which comply with the new rules to take advantage of competition in the shipbuilding market.This paper was finished after the writer took part in the project“87,000 DWT bulk carrier hull structure development”, including learn/study of JBP Common Structure Rule, hull structure scantling calculated based on CSR software-SDP developed by CCS, FE analysis of cargo hold model created based on the scantlings above and structure strengthenings according to the fem analysis results.In order not to make detailed stress assessment with refined meshes to evaluate highly stressed area, we made strengthenings for all structures whose calculated stresses exceed 95% of the allowable stress (235/k, k: material factor). We made strengthenings on structural members which not met the rules requirements according to the results of buckling check and fatigue check of structural details. Finally, all hull structural members met the requirements of CSR; we got all the scantlings of hull structural members and finished the hull structure development of the bulk carrier.

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CLC: > Transportation > Waterway transport > Marine Engineering > Various types of vessels > Carriers > Cargo ship > Bulk carriers
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