Altair RISE

A program to recognize and reward our most engaged community members

Nominate Yourself Now!

export seperate meshed-components

Hi professionals

i have an geometry, that consists of 3 parts. This parts are devided in 3 components. My goal is to export each meshes component seperately. Does ist consequently mean, that i have to mesh each component seperately? I look for an efficient way to mesh the whole geometry (all 3 components) and export then the seperate components.
How do you handle this?

Second question is:
How i have to combine the mesh of component #1 with mesh of component #2? Its necessary to meet both elements (1. and 2.component) in a node, this is what i suppose. Even then i can geht sure, the elements are combined.
So how exactly do i realize this kind of combination and how i can appear all the nodes of interest, to get sure the combination succeeded ?

Thanks a lot

Find more posts tagged with

English

HyperMesh

Accepted answers

All comments

Rahul_P1

hotsauce,

All elements in your model should be connected to each other generally, the meshed model should be as close to the model in reality as possible.

The mesh is crucial to the finite element analysis as the quality of the mesh directly reflects on the quality of the results generated.

If these are surface components and if you are using automesh, You can ensure that the element generated for each component is placed in the respective components and also ensure that there is connectivity between these elements across components easily using the keep connectivity and the elem to surface comp options.

see http://www.altairhyperworks.com/hwhelp/Altair/hw11.0/help/hwd/hwd.htm?help164.htm

see 2d meshing tutorials HyperWorks Desktop > HyperMesh > Meshing > 2d elements

you can then export only the required components using the custom option in the export tab Custom - Allows users to select which entities will be exported from the current database. To define which entities to export, click the Select Entities button. The Entity State Browser opens. In the Entity State Browser, activate check boxes as desired in the export column to set the export state of any HyperMesh entity. Only those entities which have a checkbox activated (i.e. export) will be exported to the template. When finished setting the export state for all entities, click the Export tab to return to the Export dialog.

If you need solid elements or you need to use any other method to mesh, then right click on each component in the model browser one at a time and then click on make current , this is now the current component which will collect all changes that are now made, you can then mesh this component and all elements of this component will be placed in this component. do this for each component and then export using custom.

element connectivity can be checked after such operations or generally after meshing using the tool > edges or the tool > faces options for shell and solid elements respectively.

see tutorial HyperWorks Desktop > HyperMesh > Quality > HM-3300: Checking and Editing Mesh > step 2

Rahul_P1

thank you.

the export-issue is solved now!

i hope to make you better understand the second issue with following picture:

I would like to drag from each plane of the blue 2d-mesh into the cube with a certain bias itensity. How i can realize it, 1. without having overlapped elements and 2. kept connect between all elements while dragging?

Another option is easier i have to admit: start 2d-meshing from image plane and drag then. But problem here is, that the drag-end must be connected with bigger elements in a mesh of another surface... so how do i solve it?

Is there any option to select two shell-meshed planes to realize a solid mesh out of it?

Rahul_P1

HotSauce,

If I understand your problem correctly you need to create a solid mesh for your geometry with a particular bias from the existing angled surface mesh.

This can easily be done using 3d > solid map > line drag

Just mesh the opposite ends, then select the angled elements to drag and the flat elements to match.you can input a bias intensity here to get a result like above. Make sure that the node count is the same in the elements to match and drag

Rahul_P1

thanks!

is it also realizable, when the node-count is different? this is actually my goal, to save time

Rahul_P1

HotSauce,

When the node count is different you can use ends only with just elements to drag and the destination surface.

As a side note, A cube for instance with say 5 elements in one side and 10 elements in its opposite side, cannot be mapped with solid elements generally, this is physically impossible while maintaining connectivity.

Rahul_P1

ok, problem solved! thanks a lot