中国舰船研究
中國艦船研究
중국함선연구
CHINESE JOURNAL OF SHIP RESEARCH
2014年
2期
37-41,54
,共6页
周于程%郑绍文%刘均%郑杰%程远胜
週于程%鄭紹文%劉均%鄭傑%程遠勝
주우정%정소문%류균%정걸%정원성
大开口舱段结构%甲板纵骨稳定性%纵骨轴向应力分布%有限元法
大開口艙段結構%甲闆縱骨穩定性%縱骨軸嚮應力分佈%有限元法
대개구창단결구%갑판종골은정성%종골축향응력분포%유한원법
cabin structure with large opening%stability of deck longitudinal%axial stress distribution of deck longitudinal%Finite Element Method(FEM)
针对某大开口舱段结构,采用有限元方法(FEM)对比分析3种计算模型位移载荷作用下第1层甲板纵骨轴向应力的分布。计算结果表明,该应力分布存在较大程度的不均匀性,采用双层板架模型或立体舱段模型能获得较准确的纵骨轴向应力分布。同时,分析2种基于稳定性要求的大开口甲板纵骨设计理念的优劣。为合理利用结构材料,均衡各区域纵骨的稳定性储备,建议在设计甲板纵骨时要考虑大开口甲板纵骨轴向应力分布的不均匀性。
針對某大開口艙段結構,採用有限元方法(FEM)對比分析3種計算模型位移載荷作用下第1層甲闆縱骨軸嚮應力的分佈。計算結果錶明,該應力分佈存在較大程度的不均勻性,採用雙層闆架模型或立體艙段模型能穫得較準確的縱骨軸嚮應力分佈。同時,分析2種基于穩定性要求的大開口甲闆縱骨設計理唸的優劣。為閤理利用結構材料,均衡各區域縱骨的穩定性儲備,建議在設計甲闆縱骨時要攷慮大開口甲闆縱骨軸嚮應力分佈的不均勻性。
침대모대개구창단결구,채용유한원방법(FEM)대비분석3충계산모형위이재하작용하제1층갑판종골축향응력적분포。계산결과표명,해응력분포존재교대정도적불균균성,채용쌍층판가모형혹입체창단모형능획득교준학적종골축향응력분포。동시,분석2충기우은정성요구적대개구갑판종골설계이념적우렬。위합리이용결구재료,균형각구역종골적은정성저비,건의재설계갑판종골시요고필대개구갑판종골축향응력분포적불균균성。
By examining the cabin structure with large opening,the longitudinal axial stress distribution under displacement load on the first deck is investigated with three different computational models,using the Finite Element Method(FEM). Numerical results show that the axial stress distribution displays a het-erogeneity of large degree,and such distribution could be obtained with acceptable accuracy via either the double grillage structure model or the cabin structure model. Also,the advantages and disadvantages of two methodologies that can be applied on the longitudinal design of the first deck with large opening are an-alyzed based on their stability. In order to improve the material utilization and balance the stability require-ment for different regions of longitudinal,the non-uniformity of deck longitudinal axial stress distribution is advised to be considered for the design of deck longitudinal.