刹车盘的工作变形测量 Measuring Operational Deflection Shapes of a Brake Rotor


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汽车在行驶过程中会受到多种力的作用,发动机或路面上的振动会通过车辆底盘和悬架传递到车辆最重要的机械部件——制动系统。在这个例子中,使用锤击法来测量重型卡车直径14“的制动盘,以获得盘片的振型信息。
 
Automobiles are subject to many forces during operation.  Vibrations from the engine or the road-surface transmit through the vehicle’s chassis and suspension to the most essential mechanical component of the vehicle, the brake system. In this example, a 14” diameter brake disc from a heavy-duty truck was excited using a small hammer to measure the vibration shapes of the rotor.
 

使用VIC-3D™HS FFT振动分析系统可轻松识别和测量三维工作变形,即使频率高达约2000Hz,而振幅小至40纳米的测量。三阶固有频率的振型可以很容易地在120, 932和2087Hz处被识别。下图中软件的截屏(左)显示平均离面振幅A(w)与对应的频率函数的图形。而932Hz下的工作变形如右下方生成的动画。

The three-dimensional operational deflection shapes were easily identified and measured using the VIC-3D™ HS Vibration Analysis System. Amplitudes as small as 40 nanometers were measured for frequencies up to approximately 2,000 Hz. Three unique shapes can easily be identified at 120, 932 and 2,087 Hz. The screen shot of the software below (left) shows a graph of the average out-of-plane amplitude A(w) as a function of frequency. The operational deflection shape at 932 Hz is animated below (right).

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CSI公司提供的交钥匙系统,使用户能够在任何负载条件下快速准确地对任何物体表面的形貌、三维运动、变形和应变进行非常详细的测量。 全场3D数据可以图表、等高线图、动画和其他各种格式的形式提取,以便于FEA验证。

Correlated Solutions, Inc. provides turn-key systems that allow users to quickly and accurately make extremely detailed measurements of shape, 3D motion, deformation, and strain over the entire surface of any object under any load condition.  Full-field 3D data can be extracted in the form of graphs, contour plots, animations, and other various formats for easy FEA validation.