船舶与海洋工程
船舶與海洋工程
선박여해양공정
Shanghai Shipbuilding
2014年
3期
42-48
,共7页
轴系校中%船体变形%支反力影响数%当量支反力影响数
軸繫校中%船體變形%支反力影響數%噹量支反力影響數
축계교중%선체변형%지반력영향수%당량지반력영향수
shafting alignment%hull deformation%reaction influence number%equivalent reaction influence number
营运船舶因外来原因造成船体变形，导致主机EB2和EB3轴承失去负荷且损坏轴瓦的事故，自20世纪70年代以来，一直受到各船级社和船舶设计和建造的研究部门重视。NK 船级社在传统轴系校中时使用支反力影响数并引入了作用于机舱后舱舱壁处的当量支反力影响数，据此近似计算出在船体变形情况下，主机EB2和EB3轴承失去负荷的机舱后舱舱壁处的相对位移量。该量化指标使设计人员在轴系校中计算中加深了对船体变形的理解。
營運船舶因外來原因造成船體變形，導緻主機EB2和EB3軸承失去負荷且損壞軸瓦的事故，自20世紀70年代以來，一直受到各船級社和船舶設計和建造的研究部門重視。NK 船級社在傳統軸繫校中時使用支反力影響數併引入瞭作用于機艙後艙艙壁處的噹量支反力影響數，據此近似計算齣在船體變形情況下，主機EB2和EB3軸承失去負荷的機艙後艙艙壁處的相對位移量。該量化指標使設計人員在軸繫校中計算中加深瞭對船體變形的理解。
영운선박인외래원인조성선체변형，도치주궤EB2화EB3축승실거부하차손배축와적사고，자20세기70년대이래，일직수도각선급사화선박설계화건조적연구부문중시。NK 선급사재전통축계교중시사용지반력영향수병인입료작용우궤창후창창벽처적당량지반력영향수，거차근사계산출재선체변형정황하，주궤EB2화EB3축승실거부하적궤창후창창벽처적상대위이량。해양화지표사설계인원재축계교중계산중가심료대선체변형적리해。
Hull deformation of operating vessels caused by external reasons may lead to loss of load on EB2 and EB3 main engine bearings, such incidents have always attracted the attention of classification societies and ship design and construction departments since 1970s. Class NK uses the reaction influence number in the conventional alignment of shafting, and introduces the equivalent reaction influence number of the engine room rear bulkhead, to approximately calculate the relative displacement at the engine room rear bulkhead after EB2 and EB3 bearings have lost load under the hull deformation condition. This quantified criterion deepens the designer’s understanding of hull deformation in their calculation of shafting alignment.
