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1、第9卷第1期中國艦船研究V01.9No.11Q!堡生蘭旦旦墜i里!!!!竺堅望!!旦!墨壘i衛(wèi)墾!!!!!!壘!!墜:蘭Q!蘭doi:10.3969/j.issn.1673—3185.2014.01.015期千q網(wǎng)址:WWW。ship—research.com網(wǎng)絡(luò)出版地址:http://www.cnki.net/kcms/doi/10.3969/j.issn.1673—3185.2014.01.015.html潛艇水下碰撞特性數(shù)值研究孫登成,郭君,吳銘,姬秀濱,祝祥剛,陳舸哈爾濱工程大學(xué)船舶工程
2、學(xué)院,黑龍江哈爾濱150001摘要:為分析碰撞中潛艇結(jié)構(gòu)的損傷特性,選取2500t級雙殼體潛艇作為研究對象,對潛艇結(jié)構(gòu)進(jìn)行等比例實體建模,并采取潛艇船艏與舷側(cè)部位的撞擊形式。利用大型非線性有限元軟件Ls—Dyna,從能量、碰撞力和沖擊環(huán)境3個角度研究碰撞的影響,得出以下結(jié)論:潛艇外殼及中間結(jié)構(gòu)是吸能的主要結(jié)構(gòu),岡4度較弱的潛艇艏部會產(chǎn)生大的塑性變形區(qū),而剛度較強的舷側(cè)結(jié)構(gòu)的響應(yīng)則以動能為主,且伴隨著小范圍的塑性變形區(qū);撞擊力在艏部臨界速度附近,產(chǎn)生單峰值及雙峰值現(xiàn)象,并確定臨界速度值約為15—1
3、6kn;船長方向的沖擊環(huán)境成對數(shù)函數(shù)分布,按中級損傷程度,對艇員的影響區(qū)域為距離船艏撞擊區(qū)約0.11倍艇長范圍。關(guān)鍵詞:碰撞;吸能;塑性變形;臨界速度;沖擊環(huán)境中圖分類號:U663.2文獻(xiàn)標(biāo)志碼:A文章編號:1673—3185(2014)Ol一105一06NumericalStudyontheUnderwaterCollisionCharacteristicsofaDoubleHullSubmarineSUNDengcheng,GUOJun,形UMing,jlXiubin,ZHUXianggan
4、g,CHENGeSchoolofShipbuildingEngineering,HarbinEngineeringUniversity,Harbin150001,ChinaAbstract:Toinvestigatethedamagecharacteristicsofsubmarinestructuresincollision,adoublehullsubmarinewith2500tondisplacementischosenasaresearchobject,anditsequallypro
5、portionalsolidmodelisconstructedtorealizethecollisionbetweenthestrikingbowandshipboard.Fromtheperspectivesofenergyabsorption,collisionforceandshockenvironment,theinfluencesofthecollisionarestudiedvianon—linearcodeLs—Dyna.wherethemajorconclusionsareas
6、follows:thecollisionenergyismainlyab—sorbedbvtheoutershellandintermediatestructures,renderingthelowerstiffnessbowtosuffersignificantplasticdeformation;thestrongershipboardreactsmainlywithkineticenergy,andarelativelysmallerplas-ticzoneisresulted.Singl
7、eanddoublepeakofcollisionforcetendtoappearwhenthevelocityisaroundthecriticalmagnitude(15—16ku).Theshockenvironmentalongthelongitudinaldirectionresemblestheloga—rithmicfunctiontrend,whichsuggeststhattheaffectedregionforcrewmembers,measuredwiththeinter
8、。mediatedamageddegree.iswithin0.11shiplengthfromthebowimpingementzone·Keywords:collision;energyabsorption;plasticdeformation;criticalvelocity;shockenvironmento引言等≥磊囂姜鬈需箍字麓摹磬,’塞籮嘉篙潛艇自1900年誕生以來,發(fā)生水下碰撞的事“塞拉”級核潛艇與美國的“洛杉磯”號發(fā)生碰撞,故達(dá)百起之多?,在潛艇總事故中占非常大的比俄潛艇的艏部