The nonlinear deformation analysis of shiphull under heating bending procedure

• Main Authors: Chen, Yu-Ling, 陳淯鈴
• Other Authors: Guan, Pai-Chen
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/14007794242169686311

碩士 === 國立臺灣海洋大學 === 系統工程暨造船學系 === 103 === In Taiwan, shipyards use the heating bending process to manufacture up to 50 to 60 percent of ship hull plate with three-dimensional curved surface. Due to the lack of systematic procedure and database, the manufacturing quality highly rely on experience of technicians and workers, who will decide the heating path, time, temperature of the torch, etc. Therefore, plates with highly curved surface or complex geometry usually lead to unstable quality and longer working hour. It is also difficult to train new workers and engineers without documentations and data. In this paper, we start to develop a standard experimental and numerical analyses procedures specifically for the heat-bending procedure. The paper includes the description of the following main tasks: (1) Experimental design: the heat-bending experiment uses automatic flame cutting machine to study the effect of heating speed, temperature; (2) Surveying method: two total-stations are used to measure the accuracy of the plate deformation during the heat-bending process; (3) Numerical modeling: a blind prediction is performed with the ABAQUS program. The experimental results will be used to identify the temperature distribution, steel deformation data, which will be later used for the numerical study and for the heat-bending date base.