汽车NVH（ Noise、Vibration、Harshness ）在行业里素有“汽车玄学”之称，的确如此，不管是仿真分析、NVH性能开发以及NVH试验等等。 NVH确实是衡量汽车制造质量的一个综合性问题，它给汽车用户的感受是最直接的。

Building fast and accurate full vehicle models using data from FE, Test, 1D, or others... Orders, Octave, Sound Power, Mount force validation, radiated noise quantification, ... How to meet functional performance? Running mode, torsional vibration, angle analysis & combustion analysis, dynamic balancing, ... How to meet acoustic performance?

This technology brief illustrates typical mode-based noise, vibration, and harshness (NVH) analyses of a full automobile model using the Abaqus product suite.

2024年12月22日 · NVH，其实NVH就是噪声（Noise）、振动（Vibration）和声振粗糙度（Harshness）的英文缩写，简单来说，NVH就是衡量汽车坐起来安不安静、会不会抖动、地板会不会发麻的综合性问题。

2025年1月15日 · NVH是噪声（Noise）、振动（Vibration）和声振粗糙度（Harshness）的缩写，它涵盖了物体的听觉和触觉反馈。 在汽车中，NVH分析帮助工程师确定声音的来源和产生原因，进而通过仿真和物理测试方法减少或消除不必要的噪声，增强有益的声音。

Modal participation represents the complex contribution of a structure or fluid mode to a response. These modes can be systems modes in a modal frequency response analysis, or component modes from CMS superelement subsystems.

Identifies global modes from an OptiStruct or Nastran modal analysis. Identifying modes is the most basic part of an NVH analysis. Understanding modal content helps identify the physical phenomenon that is causing the NVH issue.

Figure 3 displays the modal analysis results from Mechanical software, showing that the 0 th mode and the sixth mode occur at 4711.7 Hz and 4456.3 Hz, respectively. As shown in Figure 3b, there is a significant difference in the natural frequency value for the sixth mode, and the Motor-CAD NVH model can be tuned to align with the natural frequency value calculated from Mechanical software.

NVH. From the HyperGraph 2D NVH menu, the following options are available. Load the NVH Utilities Preferences File. Integrated Diagnostics. Calculate a response, perform contribution analysis, plot results, and perform diagnostic studies …

2024年12月29日 · Noise, Vibration, and Harshness (NVH) is a field in mechanical engineering that focuses on the study, measurement, and control of sound and vibrations in mechanical systems. NVH is critical in industries such as automotive, aerospace, and industrial machinery, where reducing noise and vibrations enhances performance, durability, and user comfort.