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Pressure Input from Table

Hi,
I was wondering if there is a way to import & input pressure values on shell elements/surfaces using a tabular format in HM/HW?

I have a tapered pipe where the pressure values varies linearly along the length. Not only the values vary linearly, they also vary circumferential or angle (Theta - across the circular cross-section). Anyways, I have generated the pressure values and they are in the following format

Theta(Angle or Radians)/Distance

0 D1 D2 D3
90 x x x
180 x x x
270 x x x
360 x x x

What I want to do is create a custom cylindrical coord system and if possible use a feature in HW/HM to declare the Theta & Length (Z) as independent variables and import the above type of values and essentially create a field. Next I will apply pressure load referencing the field distribution.

The above can be done in Patran but hoping it can done in HW/HM as well because I'd prefer to do as much as possible in a single environment.

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Adriano Koga_20259

you can also find fields in HyperMesh.

Take a look at the documentation/help.

I think the parametric field can help you in your case. Maybe you need to adjust your input table t the format needed.

Maybe even the basic 'pressure' panel, using an equation in a local system might help you with that.

Burner2k

I saw "Fields" but should have checked out the documentation first. Thanks for pointing it out. I will research & see if I can somehow fit my data to required format.

Burner2k

One more important question...how do I reference my Fields in the pressure load panel? I will check again tomorrow but last time I checked, I was not able to find a way to reference fields or tabular input in the pressure application panel.

Burner2k

So, I was able to how to realize a field and apply pressure values. Firstly, I am hoping for better & expanded documentation on defining Fields. The current documentation is too sparse to be helpful.

Secondly, I think currently what I want do is not available in HM/HW. I tried different approaches in realizing fields but HM is not able to give me the pressure distribution I want. In fact, when I try linear interpolation (BTW what is the search radius or tolerance? What does it do? Documentation does not explain this), only two pressure load values are created. Further, I cannot define what axes HM should treat as independent and dependent variables.

Hoping this is something HM can introduce in future.

Burner2k

I am gonna try one last time about my issue here. Going back to basics here so that perhaps someone can suggest a better way to input the required values using HM.

I have a tapered cylinder as shown below. The dimensions like length have been normalized.

The pressure varies linearly from one end to another (lets say 0 to 1). I have an equation which describes the variation of pressure. The pressure variation is not only linear but also varies along the circumference. So I have 4 equations (A, B, C & D; 0, 90, 180 & 270 Deg) for each angle. We have managed to come up with pressure values for various values of Theta based on existing data and like mentioned in my OP, the format is as follows (not covered the full range but hopefully the idea is conveyed)...

Theta\Distance D1 D2 D3
0 P1 P2 P3
45 P4 P5 P6
90 P7 P8 P9
135 P10 P11 P12
180 P13 P14 P15

Unfortunately, the documentation on Fields is not detailed enough to figure out why the above data is not being accepted. Else, if someone could suggest an alternate approach to map the above pressure distribution to my FEM, I would be really thankful.