中小型LNG动力船舶燃料系统配置

基于某型液化天然气（Liquefied Natural Gas，LNG）动力拖船实践经验，从燃料储存系统、燃料供应系统、燃料加热系统、燃料透气管路系统、燃料监控系统和燃料安全系统等方面对中小型LNG动力船舶燃料系统进行分析，实现中小型LNG动力船舶燃料系统的灵活配置，可为中小型LNG动力船舶设计提供参考。     

Multi-objective optimization study on dimensions of medium-sized cruise ship in concept phase北大核心CSCD

［Objective］Aiming at the problem of too many influencing factors and too little reference data for determining the dimensions of medium-sized cruise ships in the concept phase, a simplified multi-objective optimization method based on the fitting of dimensions and performance is proposed. ［Method］First, the dimension relations of medium-sized cruise ships are analyzed and the influence of the latest SOLAS requirements used to determine the optimization range. Second, the influence of cruise ship dimensions on space, resistance, stability and seakeeping are analyzed. Next, based on the principles of genetic algorithms, a multiobjective optimization algorithm with high robustness and high engineering adaptability is determined to establish a multi-objective optimization model for the concept design of medium-sized cruise ships. Finally, the Pareto solution obtained by multi-objective optimization is analyzed to provide initial references for determining the dimensions of the target cruise ship. ［Results］Implemented via a genetic algorithm, the optimization program proposed herein is applied in the concept design of a medium-sized cruise ship in order to optimize the initial dimensions, thereby achieving the expected outcome of providing reasonable initial dimensions for cruise ship design. ［Conclusion ］ The proposed simplified multi-objective optimization model can provide feasible initial dimensions for medium-sized cruise ships in the concept phase. As the Pareto solution obtained by multi-objective optimization has different focuses such as resistance and stability, the most suitable solution needs to be selected according to the design object. © 2023 Chinese Journal of Ship Research. All rights reserved.     

中型邮船甲板薄板分段吊装方案

以中型邮船的3种典型甲板薄板分段为例，设计相应吊装方案，探讨起吊设备在整个吊运过程中影响建造效率的因素。采用有限元分析方法，计算3种薄板分段在不同工况条件下的强度和变形，并对发生超大变形的分段提出临时加强方案。结果表明，该吊装方案适用于甲板薄板分段结构强度弱的特点，满足中国船级社（CCS）吊装规范要求，可使中型邮船甲板薄板分段的吊装作业更加便捷和高效。