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中文带有此标签的案例中包含中文 PDF 文档。


球形压电声学换能器

本案例显示如何模拟中空球形压电材料在空气中产生的声波。设备沿球的径向极化,需要定义一个新的局部坐标系。因为极化方向与材料响应是各向异性,这对于正确模拟是相当重要的。

Radially Polarized Piezoelectric Transducer

This tutorial model shows how a user-defined coordinate system can be used to create any type of directional polarization of a piezoelectric material. ...

Photoacoustic Resonator

This is a model of a simple photoacoustic (or optoacoustic) resonator. A pulsating laser heats a gas causing expansion and contraction and thus ...

Shape Optimization of a Tweeter Waveguide

This application illustrates how to use COMSOL’s optimization capabilities to automatically develop novel designs satisfying critical design ...

Acoustic Muffler with Thermoacoustic Impedance Lumping

This model utilizes the thermoacoustic interface in a submodel to obtain a detailed (and more precise) measure for the transfer impedance of a perforated plate. The impedance is in turn used as an internal impedance in a pressure acoustic model of a muffler. Results are compared to classic impedance models.

Acoustic-Structure Interaction and Air Flow in Violins

These models are featured in the blog post [Analyze Violin Tone and Volume with Multiphysics Modeling](http://www.comsol.com/blogs/analyze-violin-tone ...

Noise Radiation by a Compound Gear Train

This example illustrates the modeling of noise radiation from the housing of a gear train. First, a multibody analysis is performed in the time domain ...

轴对称电容麦克风

本案例模型是一个简化的轴对称电容麦克风,包含相关的物理场,特定几何和材料参数的敏感性分析。它求解的是全耦合声-电-力学有限元模型,在频域中使用了线性扰动求解器。本案例是轴对称电容麦克风和电集总模型的扩展模型。

本案例需要声学模块和准静态电磁模块。

Apartment Acoustics Analyzed using the Acoustic Diffusion Equation

The sound distribution from a TV in a two-room apartment is computed. The simulation demonstrates the use of the Acoustic Diffusion Equation interface to get a quick and simple estimate of the local sound pressure level. For increased accuracy, an analytical expression for the direct sound is added in the living room.

预应力螺栓蘑菇形压电换能器

这个模型基于蘑菇形压电换能器模型,显示如何在换能器的中心螺栓上施加预应力,以及对设备的结构和声学响应的影响。预应力换能器的性能与无应力情况进行了比较。

这个模型需要声学模块和结构力学模块。