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How to apply a pressure load distribution function on the surface?

Posted Jul 7, 2022, 2:27 a.m. EDT 9 Replies

Yu Xiao Wu
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Hello everyone: There is a rectangular plate, I need to apply a pressure load distribution function on the surface, the pressure load is related to the spatial coordinates (x, y), how to apply?

9 Replies Last Post Jul 8, 2022, 10:11 a.m. EDT
Edgar J. Kaiser Certified Consultant
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Posted: 2 years ago Jul 7, 2022, 3:57 a.m. EDT

Simply use this function p(x, y) in the pressure load BC on this surface.

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
Simply use this function p(x, y) in the pressure load BC on this surface.
Yu Xiao Wu
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Posted: 2 years ago Jul 7, 2022, 10:43 a.m. EDT

Dear Edgar J. Kaiser: Thank you for your reply! AND I have another question. How to apply a pressure-distributed load on the surface, p(x,y), where x,y are specified discrete spatial coordinates. For example, x is 0 to 1 with a spacing of 0.1

Dear Edgar J. Kaiser: Thank you for your reply! AND I have another question. How to apply a pressure-distributed load on the surface, p(x,y), where x,y are specified discrete spatial coordinates. For example, x is 0 to 1 with a spacing of 0.1
Edgar J. Kaiser Certified Consultant
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Posted: 2 years ago Jul 7, 2022, 10:49 a.m. EDT

You can set up an interpolation function using your discrete values.

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
You can set up an interpolation function using your discrete values.
Yu Xiao Wu
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Posted: 2 years ago Jul 7, 2022, 11:09 a.m. EDT

Dear Edgar J. Kaiser: Thank you for your reply！ I will try it your way Thanks again!

Dear Edgar J. Kaiser: Thank you for your reply！ I will try it your way Thanks again!
Yu Xiao Wu
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Posted: 2 years ago Jul 7, 2022, 11:40 a.m. EDT

Dear Edgar J. Kaiser: Suppose I use the interpolation function to import 3 columns of data, how can I make my first column of data be the independent variable space coordinate x, and the second column is the space coordinate y?

Dear Edgar J. Kaiser: Suppose I use the interpolation function to import 3 columns of data, how can I make my first column of data be the independent variable space coordinate x, and the second column is the space coordinate y?
Edgar J. Kaiser Certified Consultant
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Posted: 2 years ago Jul 8, 2022, 2:23 a.m. EDT

It is all in the documentation for interpolation functions.

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Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com
It is all in the documentation for interpolation functions.
Jeff Hiller COMSOL Employee

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Posted: 2 years ago Jul 8, 2022, 8:59 a.m. EDT

Specifically, please refer to the COMSOL Multiphysics Reference Guide, version 6.0, page 345 and following. All manuals are accessible through File > Help > Documentation.

Best,

Jeff

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Jeff Hiller
Specifically, please refer to the COMSOL Multiphysics Reference Guide, version 6.0, page 345 and following. All manuals are accessible through File > Help > Documentation. Best, Jeff
Yu Xiao Wu
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Posted: 2 years ago Jul 8, 2022, 10:00 a.m. EDT

thank you all！ I already know how to use interpolation functions and understand what the arguments mean. But now I encounter a new problem, the interpolation function cannot import data in complex form. How can this be resolved?

thank you all！ I already know how to use interpolation functions and understand what the arguments mean. But now I encounter a new problem, the interpolation function cannot import data in complex form. How can this be resolved?
Jeff Hiller COMSOL Employee

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Posted: 2 years ago Jul 8, 2022, 10:11 a.m. EDT

See your other thread.

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Jeff Hiller
See [your other thread](https://www.comsol.com/forum/thread/310573/how-to-import-interpolation-functions-for-complex-numbers?last=2022-07-08T13:59:55Z).

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