检索结果-南通市图书馆

ANALYSIS OF nonlinear sloshing IN SPHERICAL CONTAINER

在线全文

学校读者我要写书评

暂无评论

ANALYSIS OF NONLINEAR SLOSHING IN SPHERICAL CONTAINER

ALE FINITE ELEMENT ANALYSIS OF nonlinear sloshing PROBLEMS BASED ON F LUID VELOCITY POTENTIAL

The Third International Conference on Dynamics, Vibration and Control

作者： J.Lu~1 J.F.Li~2 and T.S.Wang~2 1 School of Aeronautics Science and Engineering Beihang University Beijing100191 China 2 School of Aerospace Tsinghua University Beijing 100081 China

＜正＞A fluid partly occupying a moving tank undergoes *** motions generate severe hydrodynamic loads that might be dangerous for structural integrity and stability of rockets,satellites,ships and *** for recent large vehicles in particular,the fluid contributes a non-negligible portion to the total mass of the vehicle,and therefore the importance of sloshing is accentuated.

关键词： nonlinear sloshing spherical container equivalent mechanical model arbitrary excitation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Transactions of Nanjing University of Aeronautics and Astronautics 2003年第1期20卷 23-29页

作者：陈建平周儒荣万水南京航空航天大学CAD/CAM工程研究中心东南大学交通学院

Base d on fluid velocity potential, an ALE finite element formulation for the analysi s of nonlinear sloshing problems has been developed. The ALE kinemat ical description is introduced to move the computational mesh independently of f luid motion, and the container fixed noninertial coordinate system is employed to establish the governing equations so that the mesh is needed to be updated in this coordinate system only. This leads to a very simple mesh moving algorithm which makes it easy to trace the motion of the moving boundaries and the free su rface without producing undesirable distortion of the computational mesh. The fi nite element method and finite difference method are used spacewise and timewise , respectively. A numerical example involving either forced horizontal oscillati on or forced pitching oscillation of the fluid filled container is presented to illustrate the effectiveness and the robustness of the method. In additi on, this work can be extended for the fluid structure interaction problems.

关键词： nonlinear sloshing ar bitrary Lagrangian Eulerian (ALE) description finite element method (FEM) n umerical simulation moving boundary

nonlinear semi-analytical modeling of liquid sloshing in rectangular container with horizontal baffles

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2023年第11期44卷 1973-2004页

作者： Xun MENG Ying SUN Jiadong WANG Ruili HUO Ding ZHOU College of Civil Engineering Nanjing Tech UniversityNanjing 211816China School of Transportation and Civil Engineering Nantong UniversityNantong 226019Jiangsu ProvinceChina Faculty of Civil Engineering and Mechanics Jiangsu UniversityZhenjiang 212013Jiangsu ProvinceChina

A nonlinear semi-analytical scheme is proposed for investigating the finiteamplitude nonlinear sloshing in a horizontally baffled rectangular liquid container under the seismic *** sub-domain method is developed to analytically derive the modal behaviors of the baffled linear *** viscosity dissipation effects from the interior liquid and boundary layers are *** the introduction of the generalized time-dependent coordinates,the surface wave elevation and velocity potential are represented by a series of linear modal *** infinite-dimensional modal system of the nonlinear sloshing is formulated based on the Bateman-Luke variational principle,which is further reduced to the finite-dimensional modal system by using the NarimanovMoiseev asymptotic *** base force and overturning moment induced by the nonlinear sloshing are derived as the functions of the generalized time-dependent *** present results match well with the available analytical,numerical,and experimental *** paper examines the surface wave elevation,base force,and overturning moment versus the baffle parameters and excitation amplitude in detail.

关键词： rectangular container nonlinear sloshing baffe sub-domain multi-modal method

Stable response of low-gravity liquid non-linear sloshing in a circle cylindrical tank

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2007年第10期28卷 1273-1285页

作者：贺元军马兴瑞王本利 Center of Satellite Technology Harbin Institute of TechnologyHarbin 150001P.R.China R & DSichuan Aerospace Industry CorporationChengdu 610100 P.R.China China Aerospace Science and Technology Corporation Beijing 100830P.R.China Center of Satellite Technology Harbin Institute of TechnologyHarbin 150001P.R.China

Under pitch excitation, the sloshing of liquid in circular cylindrical tank includes planar motion, rotary motion and rotary motion inside planar motion. The boundaries between stable motion and unstable motion depend on the radius of the tank, the liquid height, the gravitational intension, the surface tensor and the sloshing damping. In this article, the differential equations of nonlinear sloshing are built first. And by variational principle, the Lagrange function of liquid pressure is constructed in volume intergration form. Then the velocity potential function is expanded in series by wave height function at the free surface. The nonlinear equations with kinematics and dynamics free surface boundary conditions through variation are derived. At last, these equations are solved by multiple-scales method. The influence of Bond number on the global stable response of nonlinear liquid sloshing in circular cylinder tank is analyzed in detail. The result indicates that variation of amplitude frequency response characteristics of the system with Bond, jump, lag and other nonlinear phenomena of liquid sloshing are investigated.

关键词： circle cylindrical tank nonlinear sloshing low-gravity multiple scales method stable response