船舶
船舶
선박
SHIP & BOAT
2014年
3期
42-47
,共6页
LS-DYNA 软件%二维楔形体%拉格朗日 - 欧拉算法%砰击压力系数
LS-DYNA 軟件%二維楔形體%拉格朗日 - 歐拉算法%砰擊壓力繫數
LS-DYNA 연건%이유설형체%랍격랑일 - 구랍산법%팽격압력계수
LS-DYNA software%2D wedge body%Arbitrary Lagrangian-Eulerian (ALE) algorithm%slamming pressure coefcient
利用 LS-DYNA 软件对二维楔形体入水问题进行研究。基于显式有限元方法，选用任意拉格朗日-欧拉算法，建立了包含空气、水和楔形体的完全耦合的二维有限元模型，研究流场的射流现象与压力变化情况，预报了二维楔形体砰击压力系数，并与已公开发表的模型试验结果吻合较好，从而为后续砰击载荷计算提供可靠的方法。
利用 LS-DYNA 軟件對二維楔形體入水問題進行研究。基于顯式有限元方法，選用任意拉格朗日-歐拉算法，建立瞭包含空氣、水和楔形體的完全耦閤的二維有限元模型，研究流場的射流現象與壓力變化情況，預報瞭二維楔形體砰擊壓力繫數，併與已公開髮錶的模型試驗結果吻閤較好，從而為後續砰擊載荷計算提供可靠的方法。
이용 LS-DYNA 연건대이유설형체입수문제진행연구。기우현식유한원방법，선용임의랍격랑일-구랍산법，건립료포함공기、수화설형체적완전우합적이유유한원모형，연구류장적사류현상여압력변화정황，예보료이유설형체팽격압력계수，병여이공개발표적모형시험결과문합교호，종이위후속팽격재하계산제공가고적방법。
The water entry of a two-dimension wedge body has been studied by LS-DYNA software. Based on the explicit finite element and Arbitrary Lagrangian-Eulerian (ALE) algorithm, it builds up a two-dimension coupling finite element model including air, water and wedge, studies jet flow and pressure change, and predicts the slamming pressure coefcient of the two-dimension wedge body.The results are consistent with the published model test results, which can provide the reliable method for calculating of the slamming pressure coefcient.
