Hello,

It might be easier to help you if you could tell me whether you are using Ansys Workbench or Ansys Mechanical APDL. From my short experience working with Ansys Workbench, it is quite straightforward to create a mesh for the block object. I would recommend you to use the default/automatic mesh settings first. For this you hardly need to do anything. Just need to click on the generate mesh button or right click mesh and Generate. When you would like to do some modifications to this mesh, there are plenty of methods. I would recommend you to refer to the Ansys documentation for further help.

Regarding the Mass21 element, I don't think you can create a mesh for this element. But what you can do is, is that you can select the Geometry(Faces) to which you would like to attach this Mass element to. 

Hope it was of some help.

Regards,

Rahav

I used: Ansys Mechanical APDL

Hi,

MASS21 is a structural point mass element, i.e. zero-dimensional. You cannot mesh volumes or areas using this elements, but only keypoints (zero-dimensional geometry model entities).

Maybe you are looking for a way to define a block-structured 3D grid with MASS21 elements at all grid points? This can be achieved by the following:

i) In /PREP7, define MASS21 element type (ET command) and set keyoptions and real constants (R command) properly.

ii) Place keypoints directly via coordinates (K command) OR create a block volume (BLOCK command), which automatically generates keypoints at all corners.

iii) Select (KSEL command) and mesh (KMESH command) all keypoints. This generates a MASS21 at each keypoint.

iv) If necessary, generate more MASS21 elements from the existing pattern of elements in each coordinate direction (EGEN command).

v) If necessary, merge coincident items like keypoints, elements etc. (NUMMRG command).

Regards