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标准数据库的开发及其在自顶向下船体设计系统的应用,便于船体设计人员的船体建模过程,提高船体设计的效率。 相似文献
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本文就如何使用TRIBON系统Hull模块当中的painting area功能来计算船体结构的涂装面积方面进行探索,采用本方法可以大大缩减涂装设计人员计算船体结构涂装面积的时间、工作强度与工作量,提高船体结构涂装面积的计算精度与准确性。 相似文献
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本文对工厂中常用的几个船级社的规范进行了深入的比较与剖析,并结合笔者长期从事船体设计工作对无损探伤技术的积累,提出了船体设计人员正确理解与运用无损探伤规范的原则方法,同时还大胆设计了沟通设计部门与无损探伤室,船级社合作关系的协调程序。 相似文献
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穿浪双体快速救助船是为中国救助局设计的救助公务船,主要用于承担我国近海海上人员救助任务。船体材料的选用对本船在执行救助任务中具有很大影响。通过几种材料性能对比对船体结构强度、抗海水腐蚀性、使用寿命、经济性等诸方面进行充分论证分析后,认为采用钢质主船体、铝合金上层建筑是本船船体材料的最佳选择。 相似文献
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船体强度对船舶安全影响很大,但往往又易被船上人员忽视或者存在认识上的误解,本文提出关于船体强度应注意的几个问题,以引起船上人员的足够重视,并在实际工作中采取相应措施确保船体强度满足要求。 相似文献
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关于船体强度应注意的若干问题 总被引:2,自引:0,他引:2
船体强度以船舶安全影响很大,但往往又易被船上人员忽视或者存在认识上的误解,此文提出于船体强度应注意的几个问题,以引起船上人员的足够重视。 相似文献
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本文采用挖泥船三维动画的设计实例介绍了在3DMAX环境下的三维船体建模、抓斗机建模及动作设计、大海动画效果的制作过程,以及整个挖泥船动画的设计过程,可供专业人员在设计船舶演示动画时参考。 相似文献
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介绍了我国港口资源的整合现状,指出港口整合可以提升港口的形象和地位,也为区域经济和城市的发展注入强大的动力。最后指出在港口资源整合中要避免的几个问题。 相似文献
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广州集装箱码头的轮胎式场桥小车制动器使用10多年后,出现了许多问题,故进行了改造.分析了轮胎式集装箱龙门起重机小车制动器的主要故障现象,提出了改造方案,并加以实施. 相似文献
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本文对现有的选定球面轴承的三种工程方法进行了分析比较.引入了“合力系数”,并给出了合力方向上投影面积的精确解. 相似文献
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分析柴油机故障中常见的机体裂纹故障原因,认为由于设计缺陷和管理及操作不当,易造成船舶柴油机缸体上的裂纹多发生在气缸套凸肩处。如不及时处理这些裂纹和故障,就会造成缸套的裂纹直至出现缸套漏水等严重后果,针对NANTAIQUEEN轮柴油机对该类型故障的检修提出具体措施。 相似文献
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The hydrophysical and hydrochemical structure of the Sea of Azov, with developed bottom anoxia, was studied during the RV “Akvanavt” cruise from July 31 to August 03, 2001. The anoxic zone with a thickness from 0.5 to 4 m above the bottom was found in all deep regions of the Sea. Concentrations of hydrochemical parameters were similar to the pronounced anoxic conditions (about 90 mmol m− 3 of hydrogen sulfide, 17 mmol m− 3 of ammonia, 6 mmol m− 3 of phosphate, 7 mmol m− 3 of total manganese). The hydrophysical structure was characterized by the uniform distribution of temperature in the upper 6–7 m mixed layer (UML). Below this a thin (0.4–0.8 m) thermocline layer was observed, just above the anoxic waters. Formation of this phenomenon was connected with that summer weather conditions. Intensive rains led to increased influx of river waters in June. That resulted in large input of allochtonous organic matter (OM) and inorganic nutrients; the latter were consumed on the additional autochthonous organic matter production. In July the weather was characterized by a significant rise in the daily averaged air temperature and large oscillations of temperature during the day. In this period a wind of constant direction was absent, but wind bursts were observed. The completed analyses showed that the formation of such a structure could be connected with the following factors: (i) positive growth trends of the daily averaged temperature and the daily oscillations of temperature, (ii) presence of wind bursts. The joint action of these factors resulted in the formation of the UML. The amplitude of wind bursts determined the depth of UML, and the value of trend determined the value of the temperature change in the thermocline. An initial presence of bottom halocline (caused by the Black Sea water influx to the bottom of the Sea of Azov) prevented the heating of the bottom layer and therefore led to an increase of vertical gradient of temperature in the thermocline. The spatial distribution of the turbulent exchange coefficient confirmed the existence of a “stagnation” area located above the anoxia zone, which is also, apparently, the reason for its occurrence. 相似文献
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