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Alexandrite

## Setting up an integral ...

to all

I am doing a sanity check on something and would like to set an integral - see attached mcad 15 file but cannot remember for the life of me how to set up the integral calc (integration variable, etc!)

Can anyone help me on this one?

Thanks

Regards

1 ACCEPTED SOLUTION

Accepted Solutions

## Re: Setting up an integral ...

Thanks Fred. Suspected you'll be 1st one to response. I was muddling all the variables it seems !

I am using zeta = 0 as a 1st pass check. I realised that the equation can be simplified but I want to use the general equation for multiple plot (different zeta value) later

8 REPLIES 8

## Re: Setting up an integral ...

and a pdf for the prime user...

## Re: Setting up an integral ...

See attached pdf (from Prime express)

## Re: Setting up an integral ...

Thanks Fred. Suspected you'll be 1st one to response. I was muddling all the variables it seems !

I am using zeta = 0 as a 1st pass check. I realised that the equation can be simplified but I want to use the general equation for multiple plot (different zeta value) later

## Re: Setting up an integral ...

Hi JXB,

My interpretation of your problem is this:

## Re: Setting up an integral ...

Hi MF

I believe the interpretation is correct. It's the response of a 1 DoF subjected to an acceleration (ab(t)). I am using a half sine pulse as I am checking something  (trying to !) with a back to basic kind of approach. I want to plot different pulse duration ultimately.

Attached an update based on Fred's correction. Still dealing with your suggestion/check

## Re: Setting up an integral ...

Hi,

my analytical solution:

## Re: Setting up an integral ...

Add zeta as a function argument

## Re: Setting up an integral ...

MF

Unfortunately I can only clicked one 'accept solution'. I would have accepted your effort too If I could. I have looked at the kindly provided step-by-step example and learnt a lot. Thanks a lot