A new method of virtual ship assembly modeling which integrates ship three-dimensional design and ship construction planning was described in this paper. A workflow model of simulation modeling based on the virtual sh...A new method of virtual ship assembly modeling which integrates ship three-dimensional design and ship construction planning was described in this paper. A workflow model of simulation modeling based on the virtual ship assembly process was also established; furthermore, a method of information transformation between the ship three-dimensional design and ship construction plan was formulated. To meet the requirements of information sharing between different systems in the ship virtual assembly, a simulation database was created by using the software engineering design method and the relational data model. With the application of this database, the information of ship three-dimensional design, construction planning, and virtual assembly can be integrated into one system. Subsequently, this new method was applied as a tool to simulate the virtual assembly of a ship, and the results guarantee its rationality and reliability.展开更多
船舶航行姿态反映了船舶在波浪和海况下的运动状态,直接影响到船舶的操纵性能、结构强度和乘客的舒适度,受不同海况的影响,船舶航行的横摆姿态角、升沉姿态位移受到限制,姿态估计效果不显著。因此,文章提出基于三维虚拟技术的船舶航行...船舶航行姿态反映了船舶在波浪和海况下的运动状态,直接影响到船舶的操纵性能、结构强度和乘客的舒适度,受不同海况的影响,船舶航行的横摆姿态角、升沉姿态位移受到限制,姿态估计效果不显著。因此,文章提出基于三维虚拟技术的船舶航行姿态估计方法。运用三维虚拟技术中的3D Studio Max软件经过船舶多角度图像与CAD图纸导入、创建场景、建立船舶基础形状和船体曲面等多个步骤,建立船舶三维虚拟模型,结合Unity3D提供的水资源包,构建船舶航行的海洋场景,通过船舶虚拟现实仿真运动方程实现船舶在不同海况环境中航行虚拟仿真,在虚拟仿真过程中运用船舶摇摆运动数学模型、船舶升沉姿态数学模型,实现船舶航行姿态估计。实验表明:该方法可实现船舶三维虚拟模型构建,并可在不同海况时,实现船舶航行横摆姿态角、升沉姿态位移进行估计,其应用效果较为显著。展开更多
基金Supported by Key National Science & Technology Specific Projects under Grant No. 2008ZX05027-005-002
文摘A new method of virtual ship assembly modeling which integrates ship three-dimensional design and ship construction planning was described in this paper. A workflow model of simulation modeling based on the virtual ship assembly process was also established; furthermore, a method of information transformation between the ship three-dimensional design and ship construction plan was formulated. To meet the requirements of information sharing between different systems in the ship virtual assembly, a simulation database was created by using the software engineering design method and the relational data model. With the application of this database, the information of ship three-dimensional design, construction planning, and virtual assembly can be integrated into one system. Subsequently, this new method was applied as a tool to simulate the virtual assembly of a ship, and the results guarantee its rationality and reliability.
文摘船舶航行姿态反映了船舶在波浪和海况下的运动状态,直接影响到船舶的操纵性能、结构强度和乘客的舒适度,受不同海况的影响,船舶航行的横摆姿态角、升沉姿态位移受到限制,姿态估计效果不显著。因此,文章提出基于三维虚拟技术的船舶航行姿态估计方法。运用三维虚拟技术中的3D Studio Max软件经过船舶多角度图像与CAD图纸导入、创建场景、建立船舶基础形状和船体曲面等多个步骤,建立船舶三维虚拟模型,结合Unity3D提供的水资源包,构建船舶航行的海洋场景,通过船舶虚拟现实仿真运动方程实现船舶在不同海况环境中航行虚拟仿真,在虚拟仿真过程中运用船舶摇摆运动数学模型、船舶升沉姿态数学模型,实现船舶航行姿态估计。实验表明:该方法可实现船舶三维虚拟模型构建,并可在不同海况时,实现船舶航行横摆姿态角、升沉姿态位移进行估计,其应用效果较为显著。
