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manas_dr
Associate

Join Date: Sep 2008
Posts: 35

Dynamic Loading

09/04/2009 1:08 PM

hi to all i am working on a project in which i have to calculate the dynamic loading. this arrangement has a motor coupled with a pump, through helical gear and all this are resting on a structure made of ISMC channel. for this i need to calculate static loading as well as dynamic loading on the base(foundation). static loading is pretty simple but what about dynamic loading. in short i want to design the foundation for which i need dynamic loading. any formula or guidance will suffice my need. timely help will be highly appreciated.
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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#1

Re: Dynamic Loading

09/04/2009 11:10 PM

"what about dynamic loading"

It will depend on the information you furnish. HP, Pump size, working fluid.

"in short i want to design the foundation"

Good for you. Go for it!
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Jerry New Hampshire
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Join Date: Mar 2009
Location: Northeast corner of the sphere
Posts: 310
Good Answers: 7
#2

Re: Dynamic Loading

09/05/2009 8:23 AM

The designs I have seen show a dynamic load typically about 10X static load at start-up, usually "P" factor (torque) biased, ie; directional. Run, or continuous is generally 3X static biased in the same orientation. This is for direct drive applications.

For applications using gear reductions, torque factors need to be multiplied by the amount of reduction. For a step-up scenario, the torque factor max will be the motor.

Don't forget your safety factor, ie; overbuild 3X + of design.

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