舰船科学技术
艦船科學技術
함선과학기술
SHIP SCIENCE AND TECHNOLOGY
2015年
1期
45-49
,共5页
谈微中%张聪%田哲%严新平%胡木水
談微中%張聰%田哲%嚴新平%鬍木水
담미중%장총%전철%엄신평%호목수
多体动力学%扭振特性%推进轴系%船体变形
多體動力學%扭振特性%推進軸繫%船體變形
다체동역학%뉴진특성%추진축계%선체변형
multi-body dynamics%torsional vibration characteristic%propulsion shafting%ship hull deformation
基于多体动力学耦合理论结合有限元理论,以1艘大型船舶为研究对象,建立其推进轴系的刚柔耦合多体动力学仿真模型,对大型低转速推进轴系在工作中的扭振特性进行研究。在仿真计算的基础上,利用扭振测试系统对实船的扭振进行测量,并从多个谐次将轴系扭振的仿真计算值与试验测量值进行对比和分析。分析结果表明,通过仿真计算得到的轴系扭转振动变化趋势与实际测量值基本相符,验证了仿真模型的正确性和可行性。同时,通过Adams/Virbration模块分析了船体变形对轴系扭振的影响,证明了船体变形会导致轴系扭转振动增大。
基于多體動力學耦閤理論結閤有限元理論,以1艘大型船舶為研究對象,建立其推進軸繫的剛柔耦閤多體動力學倣真模型,對大型低轉速推進軸繫在工作中的扭振特性進行研究。在倣真計算的基礎上,利用扭振測試繫統對實船的扭振進行測量,併從多箇諧次將軸繫扭振的倣真計算值與試驗測量值進行對比和分析。分析結果錶明,通過倣真計算得到的軸繫扭轉振動變化趨勢與實際測量值基本相符,驗證瞭倣真模型的正確性和可行性。同時,通過Adams/Virbration模塊分析瞭船體變形對軸繫扭振的影響,證明瞭船體變形會導緻軸繫扭轉振動增大。
기우다체동역학우합이론결합유한원이론,이1소대형선박위연구대상,건립기추진축계적강유우합다체동역학방진모형,대대형저전속추진축계재공작중적뉴진특성진행연구。재방진계산적기출상,이용뉴진측시계통대실선적뉴진진행측량,병종다개해차장축계뉴진적방진계산치여시험측량치진행대비화분석。분석결과표명,통과방진계산득도적축계뉴전진동변화추세여실제측량치기본상부,험증료방진모형적정학성화가행성。동시,통과Adams/Virbration모괴분석료선체변형대축계뉴진적영향,증명료선체변형회도치축계뉴전진동증대。
This paper is based on the multi-body dynamic coupling theory and finite element theory. It builds a multi-body dynamic coupling model of the large-scale vessel and analyses the torsion vibration characteristics of slow-speed ship propulsion shafting. The torsion vibration of shafting measured under its working condition is compared with the results from the simulation model. Then, the differences between the experimental results and the simulation results are analyzed in multi-orders. The analysis result indicates that the simulation results are almost the same with the experimental results which verify the correctness and feasibility of the model. At the same time, the influence of ship hull deformation on the torsion vibration of ship propulsion shafting is discussed by Adams/Vibration. The analysis shows that the ship hull deformation could cause the increase of torsional vibration of ship propulsion shafting.