共查询到17条相似文献,搜索用时 687 毫秒
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通过对船舶尾总组分段盆舾装工艺的研究,结合虚拟装配技术和遗传算法,提出了一种针对盆舾装装配过程的仿真及优化方法。在使用CATIA完成船体及舾装件三维建模的基础上,利用DELMIA-DPM与Matlab遗传算法工具包进行仿真及优化研究。仿真结果表明该方法能够有效解决复杂舾装单元的吊装序列、路径问题,进而提高了现场盆舾装过程的装配效率。 相似文献
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在船舶的生产与制造过程中,分段装配工艺耗费时间与成本最多,为了提高船舶分段与装配的工艺设计水平,降低船舶装配成本,本文引入了一种基于案例推理CBR的装配工艺知识管理系统,该系统具有船舶装配案例的检索、整理等功能,能够从大量船舶装配案例中提取重要的装配工艺数据,并应用于船舶的分段装配过程中,在工程实际的应用中表明,该基于案例推理CBR的船舶分段装配工艺管理系统具有改善分段效率,提高装配质量等功能。 相似文献
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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. 相似文献
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To implement efficient production control, this paper provides a timed colored Petri net (timed CPN) approach to performance modeling, real-timed dispatching and simulation of Panel hull block assembly system (PHBAS). The definition of Petri net is extended to accord with the real-world PHBAS’s organization, and the modeling method for hull flow production is provided in order to simplify modeling program. Using modeling and analyzing method, the dynamic characteristics of the system can be emulated and quantitatively calculated and work control tactics can be optimized. For the double bottom hull block shipbuilding system in a recently built shipyard in China, the simulation model with timed CPN was described and the system parameters and optimal task sequence which has the minimum operation time were obtained for a scheduling case. 相似文献
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Dimensional control is one of the most important challenges in the shipbuilding industry.In order to predict assembly dimensional variation in hull flat block construction,a variation stream model based on state space was presented in this paper which can be further applied to accuracy control in shipbuilding.Part accumulative error,locating error,and welding deformation were taken into consideration in this model,and variation propagation mechanisms and the accumulative rule in the assembly process were analyzed.Then,a model was developed to describe the variation propagation throughout the assembly process.Finally,an example of flat block construction from an actual shipyard was given.The result shows that this method is effective and useful. 相似文献
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基于船体分道作业深入推进和管理精细化的需求,围绕分段作业分解、产品信息模型建模、船体零件编码、船体零件套料和分段装配图设计,研究和总结提出船体组立设计。按此设计模式开展船体生产设计,有助于推进船体分道作业。 相似文献
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介绍万m3级耙吸挖泥船总段吊装中的有限元方法应用。该挖泥船将机舱区域至艉部合成一个巨型总段建造,设备搭载后总重2300余t。为确保该总段的吊装安全,应用有限元方法分析整体吊装时的结构响应,为总段吊装及排装方案的制定提供理论依据,保证吊装工作的顺利完成。 相似文献