Integration of Acceleration to Displacment

[vib]

This is one of the projects assigned to me by my senior and I gotta solve it. He has collected acceleration readings of a vibrating body every 1/409th of a second. He wants me to integrate this to give corresponding displacement values at each time instance.

Please let me know of a way to achieve this.

 

[IRstuff]

How long is the data series?

I've tried this type of analysis and have gotten odd results in the past, but the general theory should be that you can integrate each successive time step to get the velocity and then integrate again to get the displacement.

What I've found on my data is that the DC position moves, which is not possible for something vibrating around a stationary position, indicating offset errors in the data.

TTFN

 

[timg340]

One easy way is to get the test guys to do it for you if they have the right kit. If you are stuck with analysis I have done this in I-deas. Ncode will probally sort this out as well. Hope this helps.

 

[mishra27]

There is a post processor called lspost ( free download from

http://www.lstc.com)

throw your xy data in there, then you will be able to plot it. Once you have plotted the curve, the software allows you to operate on the curve (like integrate, differenciate etc.). Or you can use excel.

 

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