How to calculate FEMA hinge parameters?

Creation date: 5/20/2021 3:55 PM Updated: 5/21/2021 8:58 AM fema fema hinge values fema-type hinge hinge rotation pushover pushover hinge yield rotation yield strength

Question:

Hi,

Do you have more information on how FEMA hinge values on Civil? manual for example? below you can see about 3.99 rad of DY rotation, it looks a lot, how is it calculated? and how to calculate point C?

thanks

regards

Answer:

Hi,

I think you are asking how CP is calculated for the FEMA-type hinge.

FEMA specifies 0.02 of PLASTIC ROTATION for CP as shown below.

In Civil, the hinge rotation is described as D/DY ( = total rotation / Yield Rotation).

Total rotation = Yield rotation + plastic rotation.

Yield Rotation = 3.994e-5

Plastic Rotation for CP = 0.02

Therefore, CP = (3.994e-5 + 0.02)/3.994e-5 = 501.7

We can see the exact value of DY by selecting "User Input".

Also, we can give user-defined values by selecting the "User-input"

Regards,
MIDAS TECH SUPPORT

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How to calculate FEMA hinge parameters?

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