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Equation Load

Hi,

I am trying to add an equation load on the face of a drum. I created the cylindrical UCS with r along the axis and added the pressure on the face using an equation. But it keep producing a zero pressure.

The below series of images shows the equation I would like to apply and what I am getting.

Am I specifying the axis correctly in the HW equation? If so, do I need to do a rads to deg conversion anywhere? I also attached the .FEM file.

Thank you in advance.

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HyperMesh

v2021.2

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paulel_22250

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paulel_22250

From HyperMesh Help:

Equations allow you to create force, moment, pressure, temperature or flux loads on your model where the magnitude of the load is a function of the coordinates of the entity to which it is applied. An example of such a load might be an applied temperature whose intensity dissipates as a function of distance from the application point, or a pressure on a container walls due to the level of a fluid inside.

Functions must be of the form magnitude= f(x,y,z). The only variables allowed are x, y and z, (lower case) which are substituted with the coordinate values of the entity to which the load is applied. In the case of grid point loads (force, moment or temperature) the grid point coordinates are used. For elemental loads (pressure or flux) the element centroid coordinates are used. In the event that a cylindrical or spherical coordinate system is used, x, y and z are still used to reference the corresponding direction. Standard mathematical operators and functions can be used; however, any functions requiring external data will not be valid.

Note: If your equation contains a syntax error, no warning message will be displayed, but any loads created will have a zero magnitude.

paulel_22250

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