Study of Accurate Assembly of Hull Structures using CAE

(1)焊接变形模拟引入了通用热分析有限元程序ANSYS，建立了模拟焊接热变形和残余应力的方法。(没有。（1、2、3、6、10、11、12、13、14、16、17）校直仿真应用ANSYS软件，通过非线性有限元分析，建立了直线加热和点加热对焊接变形板进行校直的仿真方法。在此基础上，分析了采用压辊进行修正的方法，并对机床系统提出了修正所需的压载荷。(没有。2、6、12、15、19)(3)精确测量系统的开发利用市场上的数码相机，结合三维形状分析软件对船体块体进行了形状测量，并验证了测量精度。据了解，为了获得实际的准确性，需要进一步的研究。(4)砌块定位仿真应用神经网络、遗传算法等“AI”方法优化船体砌块安装阶段的定位。在此基础上，采用有限元方法模拟了船舶船坞船体结构的变形。(没有。4、7、9、14)(5)介绍了通用的人体模型计算机仿真软件“JACK”的人体模型工作仿真，并对船舶工程进行了分析，重点分析了工人的身体负荷。(没有。5、8、14和18)

(1) Simulation of Welding Deformation"ANSYS", general-purpose FEM program of thermal analysis, was introduced for a EWS and the method to simulate the heat deformation and residual stress due to welding has been established. (Paper no.1,2,3,6,10,11,12,13,14,16, and 17)(2) Simulation of StraighteningThe simulation method to straighten the deformed plate due to welding has been established by non-linear finite element analysis using "ANSYS", for both line heating and point heating. Furthermore, the correction method using a press roller has been analyzed and the necessary press load for the correction has been proposed for the machine system. (Paper no. 2,6,12,15, and 19)(3) Development of Accurate Measurement SystemShape measurements of a hull block using a digital camera on the market were carried out, combined with 3 dimensional shape analysis software, and the measurement accuracy has been confirmed. It was understood that a further study is necessary to obtain a practical accuracy. (not published)(4) Positioning Simulation of Blocks"AI" methods such as neural network and genetic algorithm were applied to optimize the positioning of the hull blocks at the erection stage. Furthermore, the deformation of hull structure on the building dock has been simulated using a finite element analysis. (Paper no. 4,7,9, and 14)(5) Work Simulation using Human Model"JACK", general-purpose computer simulation software of a human model, was introduced, and shipbuilding works are analyzed, focused on the body loads of the workers. (Paper no. 5,8,14, and 18)