Research on an Integrated Modeling Method of Virtual Ship Assembly

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.

基于Java多线程技术的测井仪三维仿真

实现了测井仪零件的装配动画和液体流动的模拟,重点讲述了仿真的实现过程。提出了一种基于Java多线程技术的模型运动控制方式,为每个运动模型分配一个线程,负责控制模型的运动状态,线程并发或按指定顺序执行,通过"等待/通知"模式与控制线程进行通信。同时对装配体的划分与装配约束问题进行了研究。把测井仪工作过程中叶轮高速转动的复杂模型做了简化与抽象,用一种生长的三维流线动画方式,对被测液体流经测井仪叶轮时的状态进行了表示。通过实际应用和与其他研究的比较,证明基于多线程的动画方式在占用系统资源和显示效果上均有较好的表现。