1) mode coupler
模态耦合器
2) modal coupling
模态耦合
1.
Using the structure modal superposition method and the quadratic form of radiated sound power,we divide the total sound power into the two parts: the sound power radiated by each individual mode and the sound power contributed from modal coupling.
定量研究了结构振动模态耦合对辐射声功率的影响。
2.
In analysis of wind induced vibration for single-layer reticulated shell structures,it is found that there are some modes in high position of modes order with significant contribution to wind induced response,and the modal coupling effect is also need to be considered owing to the closely located modal frequencies and strong interaction of structural members.
基于网壳结构频谱分布密集、空间相关性强的自身特性,其风致动力响应不仅要考虑多阶模态的贡献,通常还要考虑模态耦合效应。
3.
The concept of modal strain energy is introduced and modal coupling coefficients of background response and resonance response are defined in this paper.
引入模态应变能的概念,定义了背景响应模态耦合系数和共振响应模态耦合系数,依据该系数可以方便地判别背景响应、共振响应不同模态之间耦合效应的强弱,为识别耦合主导模态(强耦合模态)确定了准则。
3) mode coupling
模态耦合
1.
In order to analyze the contribution-significant modes and the mode coupling effects for the wind-induced vibrations,a Ritz-POD method is proposed for identifying the contribution-significant modes,which takes into account the vibration-participating ability of each natural mode,and the similarity between the mode and the spatial distribution of the fluctuating wind load.
为研究网壳结构风振响应的主要贡献模态分布规律及模态耦合效应,有利于提高结构风振响应的计算效率,利用Ritz-POD法,综合考虑各结构振型自身参振能力的强弱及其与脉动风压空间分布模式之间的关系来识别单层球面网壳风振的主要贡献模态;利用模态广义位移协方差矩阵的特性分析其模态耦合效应。
4) modal coupling effect
模态耦合
1.
Analytical approach considering modal coupling effects for buffeting resonant response of large-span roof structures;
大跨度屋盖结构考虑模态耦合的抖振共振响应分析方法
2.
In the equation,the background and resonant components are computed with the LRC method and the equivalent inertia force method considering modal coupling effects,respectively.
本文基于计算共振分量的修正SRSS法,将LRC法和考虑模态耦合系数的惯性风荷载法相组合来表示等效静力风荷载。
5) coupled mode
耦合模态
1.
Dynamic equations were established first for the composite cantilever plates by means of Hamilton principle and the semi-Ritz analytical method and the semi-analytical expressions for the coupled modes of bending and torsion of the composite cantilever plates were derived according to its boundary conditions.
利用哈密尔顿原理和半李兹分析法建立复合材料悬臂板的运动方程,结合边界条件得到其弯扭耦合模态的半解析解。
2.
The oilpan s coupled modes are calculated by applying fluid-structure coupled FEM,when some lubricating oil remains in the oilpan.
本文运用流固耦合有限元法 ,对有润滑油存在的油底壳进行了耦合模态计算 ,发现润滑油的存在对油底壳的模态频率和振型影响较大。
补充资料：模／数和数／模转换器
模／数和数／模转换器
A/D and D/A converters
mo/shu he shu/mo zhuanhuanqi模/数和数/模转换器(AfD。ndD/AconveTters)完成模拟信息与数字信息之间互相转换的设备。 模/数(A/D)转换器能把各种模拟信息(如位移、轴转角、速度、压力、温度、流量、电压等物理量的电信号)经采样、量化和编码转换为数字计算机可以处理的数字信息。它的基本工作原理是把输人的模拟电压与一系列以二进制数为代表的参考信号电压相比较，直到模拟电压与这个参考信号电压在一定精度范围内达到相等为止，然后输出代表此电压的二进制数码。 数/模(D/A)转换器能把数字计算机运算结果的数字信息转换成为模拟信息，用以驱动控制系统或显示设备。数/模转换是模/数转换的逆过程，当得到被转换的数字信息时，先呈现出阶梯形的量化模拟信号，经滤波处理后，输出平滑的模拟信号。 使用、选择、设计转换器时需考虑的主要问题是:①静态精度和分辨力。②动态特性，即在满足系统动态要求的情况下，应尽量选用一个转换器同时传输多路信号。③信号特性，包括转换器中模拟信号应采用的各种形式及信号比例尺、数字信号的传输方式(串行或并行)、转换器的输人阻抗和输出阻抗、以及转换器与计算机的定时和同步等问题。④噪声抑制，作为参考电压用的基准电源精度，工作环境条件等。随着微电子技术的发展，军用计算机中的转换设备将向模块化、标谁化、通用化和集成化方向发展。(王乃泉)
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参考词条