Number of iteration for Pdelta

Raymund — Mon, 15 Apr 2019 07:15:43 GMT

Hi,

Good day.

I just want to know how to get the number of iterations for pdelta analysis. (or a good number to use)

Every increase in the number of iteration also increase the displacement and stress by a large percent after a certain iteration (say, 14 to 15)

Thanks.

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Tue, 09 Oct 2018 00:12:02 GMT

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Large increase in plate stresses due to Temperature loading

Raymund — Tue, 09 Oct 2018 00:12:00 GMT

Hi All,

I have been analyzing a slab using plate elements and using the plate summary to design it. But the owner asked to consider temperature loads in the design. I have read posts regarding the temperature loads here in this forum and followed it. But when I finished running the file, this caused sudden increase in the stresses even if there is only small difference in temperature.

Could someone please check my STAAD file for verification?

* Slab is inside a concrete silo. Thickness = 2000mm

* Top temperature is 40 deg. C and bottom temperature is 30 deg. C.

*Ambient temperature is also 30 deg. C

* This slab is supported by a corbel around the silo.

I appreciate your replies on this.

Thank you.

communities.bentley.com/.../RC_2D00_SILO_5F00_MSL_2B00_16.3_5F00_SLAB_5F00_40_2D00_30.std communities.bentley.com/.../slab_5F00_support.pdf

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Number of iteration for Pdelta

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Large increase in plate stresses due to Temperature loading