附加质量

一种基于CFD理论船舶附加质量与阻尼的计算方法

A Computational Method for Evaluation of Added Mass and Damping of Ship Based on CFD Theory

垂荡阻尼板是一种增加Trussspar阻尼的结构形式，它可以通过增加平台的阻尼和附加质量，从而达到减小其垂向运动的目的。

Heave damping plates are structures used to increase the added mass and damping of truss spar . Thus the heave motion of spar can be reduced .

本文借用频率域方法，求得浮体运动附加质量和阻尼系数关于频率ω从0到∞的变化特性，通过Fourier变换将频域解转化为时域解。

In this paper , the time domain solution is obtained by Fourier transform of frequency domain results .

重点研究了在ANSYS中考虑动水压力的两种方法，即有限域内附加质量法和顺序弱耦合算法。

Two methods considering dynamic water pressure in ANSYS were studied , which were finite field addition mass method and sequence weak coupling solving method .

文中运用Fluent商用计算软件得到了数值计算复杂外形物体附加质量的新方法。

A new numerical method for obtaining added masses of the complicated object is developed by using the Fluent commercial computational Codes in this paper .

编制了三套程序，可分别用于波浪力、附加质量与附加阻尼、TLP的动力响应计算。

The writer made three computation programs for wave force , added mass and added damping , TLP 's kinetic respondence .

文中还运用此方法计算了带尾翼LOTTE飞艇的附加质量，用以在数值分析其运动时使用。

The added mass of the airship LOTTE is also computed for its numerical moving analysis .

尽管附加质量对于减小Spar平台垂荡运动起着十分重要的作用，阻尼的效果也不容忽视。

Though the added mass plays a significant role in reducing spar heave response , the damping in the platform system could not be ignored .

分别对简单断面和混合断面的算例进行了数值分析，并将本文方法所得结果与ANSYS耦合场分析方法以及刘易斯附加质量法所得结果进行比较。

Numerical analysis is performed for examples of thin-walled beams with simple section and mixed sections . Results from present method are compared with those from three-dimensional coupled analysis using ANSYS and the Lewis 's added mass method .

Skyrme模型中新的附加质量项对重子及其共振态的影响

The Influence on the Baryon and its Resonances From a New Additional Mass Term in the Skyrme Model

动力消震是利用共振原理在结构上附加质量调谐阻尼器（TMD），使TMD共振消耗地震能量来减弱结构的动力反应。

Dynamic absorption applies the principle of common vibration to adding TMD to structures , makes TMD common vibration to absorb the earthquake energy to reduce the dynamic responses of structure .

纸浆纤维粒子作为圆柱状颗粒在流场中的运动主要受到Stokes力、附加质量力和Basset力的作用。

The pulp fiber particles as cylinder particles in the flow field , can be acted upon by Stokes force , additional mass force , Basset force .

采用Morison方程的基本理论，将水视为附加质量，利用有限元方法来分析动水压力对深水桥墩地震响应的影响。

With the famous Morison Equation , the water is considered as the added pseudo mass , and the finite method is used to analyze the seismic responses of bridge pier .

基于工程实例，分别研究了TLP波浪力、附加质量与附加阻尼、TLP的动力响应的一般规律，得到了一些富有工程意义的结论（详见正文）。

It also studied general variation regularities of wave force , added mass and added damping , TLP 's kinetic respondence based on engineering examples and got some valuable conclusions ( see text ) .

在对圆柱形预应力LNG储罐混凝土外墙模态分析中，采用将动液压力等效为与储罐外墙具有相同加速度的附加质量，求得储罐外墙的自振频率。

In the LNG storage tank cylindrical prestressed modal analysis of concrete walls , using the dynamic liquid pressure equivalent to the external walls and the tank with the same acceleration of the added mass to obtain the external walls of the tank natural frequency .

在Morison方程的基础上，用附加质量考虑水的影响，采用有限元方法来分析深水桥墩的地震响应。

Based on the Morison equation , the finite element method is used to analyze the seismic responses of bridge pier in deep water , and the water is considered as the added mass .

基于Rayleigh法给出了考虑弹性支承和附加质量等复杂边界条件的吊杆张力计算显式表达式，采用不同的振型函数给出了多种吊杆横向振动频率与吊杆张力之间的显示关系式。

For convenience in engineering application the explicit expressions are proposed under the complex boundary conditions of elastic support , additional quality and others based on Rayleigh theory . And different vibration mode function is used to derive the relationships between the suspender tension and the vibration frequency .

最后，对用Westergaard方法、有限域内附加质量方法和基于ANSYS的直接耦合分析方法求解的U型结构振动特性进行了比较分析，得出一组具有实用价值的研究成果。

Finally , a set of research findings which have applied value were elicited , basing on comparing oscillation characteristic of U-type structure by different method , which are Westergaard method , finite field addition mass method and direct coupling method basing on ANSYS .

计算结果表明，新型S-Spar平台的附加质量和阻尼都达到了良好的量级，具有良好的运动性能，所得的频域计算结果将进一步用于平台的时域耦合分析计算。

The calculation results show that added mass and damping of S-Spar platform has reach good level , and S-Spar is considered to have good motion characteristics .

对比三种方法，总体上Morison附加质量法得到的结果略偏大，从曲线趋势上看，流固耦合法相对其它两种方法更为精确，也更有规律性。

Compared the three methods , Morison added mass method gets the results a bit more in general , judging from the curve trend , fluid-structure interaction relative to the other two methods are more accurate , but also more regularity .

采用dSPACEDS1103为控制器硬件，建立以压电陶瓷为致动器的单输入单输出薄板振动主动控制实验系统，且附加质量被粘贴到薄板上以测试系统鲁棒性能。

A SISO active vibration control system for a plate with a PZT actuator is built using dSPACE DS 1103 platform . Then , experimental tests are performed . A small mass is added to the structure to simulate parameter variations for the system robustness investigation .

建立了气穴瞬变流基本方程，并重点讨论了下述三种情况的基本方程的特征根问题：a.p－pi≠0且计入附加质量力；

The basic equations for the transient two phase cavitation flow are formulated and three conditions of the characteristic roots of the basic equations are discussed , namely , a. p-p I ≠ 0 and with the virtual mass force taken into account ;

作为算例，本文计算了球体的附加质量系数、迟滞函数，最后利用Cummins时间域上的运动方程求解了一个自由浮漂半球在得一位移脉冲之后的升沉运动。

The variation of free-surface shape at each time-step after impulsive motion are computed . At the end of this paper , the Cummins ' equation of motion in time-domain is used to solve the motion in vertical direction of a hemisphere floating freely on free surface .

轴对称势流有限元分析及附加质量计算

Finite Element Analysis of Axisymmetric Potential Flow and Calculation of Added-Mass

附加质量块对机床结构动态特性的影响研究

The Influence Additional Mass on Dynamic Characteristic of Machine Tool Structure

附加质量法在储液罐动力分析中的应用研究

Studying of Added Mass Method for Dynamic Analysis of Cylindrical Tank

对于水，它约为4×10~3大气压.浅水中二元柱体的横移附加质量系数

Sway Added - mass Coefficients for Two-dimensional Cylinders in Shallow Water

堆石体密度测定的附加质量法

Quality the density measurement of rockfill object by additive mass method

有附加质量时纵振动超声变幅杆的长度估算

Estimating the Length of Longitudinal Sonic Amplitude Transformer with Additional Mass

振动台在无限流体域中台面附加质量研究

Research on additional mass when vibration table vibrates in infinite liquid