topic Re: Creating a "swinging" motion to model momentum in Robot Structural Analysis Forum

Creating a "swinging" motion to model momentum

Anonymous — Tue, 18 Feb 2014 12:05:29 GMT

Hi,

I am modelling a structure that will be hanging from the ceiling of a cruise ship. In the static case the structure is vertical. However with the roll of the ship it will have an applied momentum force.

Below is the screenshot of my model at 25 degree angle, the maximum amplitude of the roll.

With the period is there a way of modelling the momentum in the structure or will I have to just work out the force and then apply it statically?

Re: Creating a "swinging" motion to model momentum

Pawel.Pulak — Tue, 18 Feb 2014 12:28:24 GMT

Inertia forces resulting from translation accelerations or rotation accelerations (centrifugal ones) can be modeled using the options shown below. It wil result in automatic generation of such loads - as static forces.

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Re: Creating a "swinging" motion to model momentum

Anonymous — Tue, 18 Feb 2014 12:36:53 GMT

excellent thank you. So I just need to imput point of rotation, velocity and acceleration calculated from my amplitude and period?

Re: Creating a "swinging" motion to model momentum

Pawel.Pulak — Tue, 18 Feb 2014 13:11:34 GMT

If you want to consider only centrifugal force that it is enough to input radial velocity v related to it. There is no need to input radial acceleration a.

Best regards,