传递损失

运用ANSYS分析软件对某消声器进行模拟，通过模拟计算出消声器的插入损失和传递损失。

With software ANSYS , a muffler is simulated and insertion loss ( IL ) and transmission loss ( TL ) are calculated .

并以此为基础，采用SYSNOISE软件，对消声器进行声学分析，求得传递损失；

Used the software of SYSNOISE , transmission loss of the vested mufflers was analyzed and studied .

研究了连接管长度、截面积和主管截面积对Helmholtz消声器传递损失的影响规律；穿孔孔径、共振腔尺寸和内径尺寸对直通穿孔管消声器传递损失的影响规律。

Study on the influence of connecting pipe length , cross-sectional area and administrative area on the transmission loss of Helmholtz muffler . Study on hole diameter , perforated pipe diameter , diameter of resonant cavity of straight-flow perforated tuber muffler transmission loss of influence .

传递损失测量的理论与实验研究：四传声器法

Measurement Theory and Experiment Investigation of Transmission Loss : Four Microphones Method

汽车排气消声器传递损失试验方法的研究

Study on Test Method of Transmission Loss of Vehicle Muffler

排气消声器传递损失的实验测量与分析

Experimental Measurement and Analysis of Transmission Loss of Exhaust Silencers

在消声器壳体内设置穿孔板，可以显著提高消声器的传递损失，增加降噪效果。

Micro perforated plate in the cylindrical muffler also increased the noise reduction .

应用人工透射边界法计算水消声器传递损失

Application of local artificial transmitting boundary in calculating transmission loss of water muffler

带催化转化器消声器传递损失数值分析

Numerical Analysis of Transmission Loss of Mufflers with Complex Shape and Catalytic Converter

实验方法是采用传递损失法，即验证水雾的存在与否对声波是否具有吸收作用。

The method used in this experiment is to measure the transfer loss .

并对含有穿孔管声学元件的消声器进行传递损失计算和消声性能分析。

Their transmission losses are calculated , and their silencing of noise properties analyzed .

存在气流时轴对称抗性消声器传递损失的有限元法求解

Galerkin Finite Element Approach for Evaluating Transmission Loss of Axisymmetrical Reactive Silencer with Air-flow

消声器两个主要指标是传递损失（声学性能）和压力损失。

Two main targets of muffler are transmission loss ( acoustic performance ) and pressure loss .

本文建立了有限单元法计算轴对称抗性消声器四端子参数数学模型，编制出包括计算传递损失在内的电算程序。

Mathematical model is established for calculating the parameters , and program compiled for predicting transmission loss .

利用三维边界元数学模型对消声结构传递损失进行了仿真计算。

With the three dimensional boundary element mathematical model . simulation of transmission loss of the muffling structure is carried out .

使用有限元法计算穿孔管消声器的传递损失，并与实验测量结果进行了比较，二者吻合良好。

The predicted transmission loss of perforated tube silencers using the finite element method and experimental results are compared and showed good agreement .

由边界元法计算出消声器的四极参数，从而预测传递损失等消声量。

The four-pole parameters of muffler can be obtained using BEM , therefore the acoustic characteristics such as transmission loss can be predicted .

通过对消声单元进行声学仿真分析，找出了传递损失随消声单元参数变化的规律，为设计排气消声器提供了依据。

It was found that the transmission loss of muffler units with parameters changes in the law , by acoustic simulation analysis for muffler units .

为考察消声器的性能，先用三维有限元法求出消声器两端的四端子参数，然后再根据四端子参数求出消声器的传递损失。

The3-D finite element method is used to obtain the four-pole parameters of a muffler which are in turn used to calculate the transmission loss .

在声学方面改进了传递损失的计算方法，着重分析了穿孔结构参数对消声器声学性能影响。

In acoustics aspect , the paper improves the method of calculating transmission loss and analyses emphatically the influence of structure parameters of perforated structure to acoustic performance .

计算发现，无论是否附加阻振质量双转角结构的结构声传递损失随频率都有较大的波动，且其极大与极小值对应于有限长中间板的共振及反向共振频率。

It is found that transmission losses in double-corner structure fluctuate greatly with frequency , which depends mostly on whether the intermediate plate acts at resonance and anti-resonance .

水消声器的传递损失和阻力损失分别采用边界元法和有限体积法求解。

In this design the boundary finite element and finite volume method were used separately to get solution for transmission loss of muffle and resistance loss of muffle .

宽带噪声激励下穿孔板结构非线性声学特性的研究在消声器壳体内设置穿孔板，可以显著提高消声器的传递损失，增加降噪效果。

A study of the acoustic nonlinearity of a perforated plate construction under broad-band noise excitation Micro perforated plate in the cylindrical muffler also increased the noise reduction .

最后我们对传统传输矩阵法计算速度慢的缺点进行了改进，在保留其计算四端参数优点的同时，提高了计算消声器传递损失速度。

The major advantage of the improved method is that it provides a faster method for computing the TL when the four-pole parameters are involved in the computing .

直通穿孔管阻性消声器传递损失的有限元预测结果与实验测量结果吻合很好，表明了三维有限元法预测穿孔管阻性消声器声学性能的适用性和精度。

Comparisons of transmission loss predictions with experimental results for straight through perforated tube dissipative silencer illustrated that FEM can predict acoustic characteristics of perforated tube silencers accurately .

利用此种矩阵，计算了两种结构的消声器的传递损失，并在双传声器随机激励消声器试验台上进行了试验验证。

The sound tranfer loss of 2 kind of muffler structures are calculated , then tested and verified on the double sound transferrer random exciting exhaust muffler testing rig .

搭建了消声器传递损失实验台，并利用该台架采用两负载法对消声器的传递损失测量进行探索性研究。

A transmission loss test bed of muffler is successfully built and some explorative research on the transmission loss measurement of muffler is completed by using two load way .

文中计算了直管段的四极参数及膨胀腔的传递损失，并与一维理论结果进行了比较。

The four-pole parameters of a straight duct and transmission loss of an expansion chamber have been calculated and compared with the results obtained by means of one-dimensional theory .

将子结构法和双倒易边界元法联合应用于预测具有三维复杂流存在时管道和消声器的四极参数与传递损失，阐述其基本原理与数值过程。

A substructure method and a dual reciprocity boundary element method ( DRBEM ) are applied to calculate four-pole parameters and transmission loss of ducts and silencers with complex flow .

在声学性能方面，采用结构化网格分别对这三种消声器进行数值模拟，分别考查它们的传递损失，分析其内部声场分布情况。

On acoustic performance , we examine their transmission loss and analyze the inner distribution of the sound fields by using structured grids for simulating the three different mufflers separately .