武汉理工大学学报（交通科学与工程版）
武漢理工大學學報（交通科學與工程版）
무한리공대학학보（교통과학여공정판）
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY(TRANSPORTATION SCIENCE & ENGINEERING)
2015年
4期
862-866
,共5页
锚链%碰撞%质量-弹簧模型%有限元
錨鏈%踫撞%質量-彈簧模型%有限元
묘련%팽당%질량-탄황모형%유한원
anchor chain%collision%mass-spring model%FEM
锚链脱落坠入海底的事故时有发生，分析锚链坠落后的完整性对打捞工作有实际的工程意义。基于O rcaFlex海洋工程软件，应用质量‐弹簧模型数值模拟锚链坠落问题，结合冲击函数法，分析坠落过程中链环间的碰撞。研究结果表明，链环间碰撞应力大小主要取决于锚链初始姿态，锚链与海床倾角越大，链环间发生危险碰撞概率越大，碰撞应力也越大。同时采用有限元软件模拟2环碰撞，相比于锚链整体模型，2环相撞是多环锚链坠落碰撞的一种简化模型。通过比较2环碰撞与多环碰撞应力大小，验证了多环碰撞计算结果的可靠性。
錨鏈脫落墜入海底的事故時有髮生，分析錨鏈墜落後的完整性對打撈工作有實際的工程意義。基于O rcaFlex海洋工程軟件，應用質量‐彈簧模型數值模擬錨鏈墜落問題，結閤遲擊函數法，分析墜落過程中鏈環間的踫撞。研究結果錶明，鏈環間踫撞應力大小主要取決于錨鏈初始姿態，錨鏈與海床傾角越大，鏈環間髮生危險踫撞概率越大，踫撞應力也越大。同時採用有限元軟件模擬2環踫撞，相比于錨鏈整體模型，2環相撞是多環錨鏈墜落踫撞的一種簡化模型。通過比較2環踫撞與多環踫撞應力大小，驗證瞭多環踫撞計算結果的可靠性。
묘련탈락추입해저적사고시유발생，분석묘련추락후적완정성대타로공작유실제적공정의의。기우O rcaFlex해양공정연건，응용질량‐탄황모형수치모의묘련추락문제，결합충격함수법，분석추락과정중련배간적팽당。연구결과표명，련배간팽당응력대소주요취결우묘련초시자태，묘련여해상경각월대，련배간발생위험팽당개솔월대，팽당응력야월대。동시채용유한원연건모의2배팽당，상비우묘련정체모형，2배상당시다배묘련추락팽당적일충간화모형。통과비교2배팽당여다배팽당응력대소，험증료다배팽당계산결과적가고성。
Accidents of anchor chain dropping into the sea occur from time to time ,and it has a practi‐cal significance to analyse the integrity of the chain for salvage work .Based on mass‐spring model , line clash model in OrcaFlex software ,this paper analyses the falling process with focuses on the colli‐sion between links .It turns out that there is a strong correlation between collision stress and initial configuration of the chain .The greater the angle between the chain and seabed ,the greater probabili‐ty of dangerous collision between links ,and the lager stress of collision .Additionally ,FEM software is used to simulate collision between two links ,which is a simplification of entire chain .By comparing the stress of two links’ collision with those of multi‐link collision ,the reliability of the results of multi‐link collision is verified .
