September 27, 2017 at 11:19 amnselvaraAnsys Employee
How to set sphere of influence?
October 17, 2017 at 7:31 amArunAnsys Employee
The sphere of influence (SI) setup needs a coordinate system. You can select the global coordinate system or define a new coordinate system. If a vertex is used in the SI, its coordinates will be used. The Sphere of Influence option is available in the Type field after you select an entity such as a body, face, edge, or vertex. Although the Behavior option is not available for Sphere of Influence, Sphere of Influence behaves as a Hard setting. That is, in the vicinity of a Sphere of Influence, the Sphere of Influence sizing overrides pre-existing sizing information regardless of whether the pre-existing sizes are larger or smaller than the Sphere of Influence sizing. This is in contrast to the Body of Influence option, which behaves as a Soft setting. For bodies, faces, and edges, Sphere of Influence allows you to apply mesh sizing within the confines of a sphere in space that you define as follows: 1. Create a local coordinate system whose origin you intend to be the center of the sphere. 2. Select this coordinate system in the Sphere Center field. 3. Enter the radius of the sphere in the Sphere Radius field. 4. Enter a value in the Element Size field. The element size will be applied to all topologies within the confines of the sphere. For example, if you are applying the element size to a face, the size will also be applied to the edges of that face, and to the vertices of those edges, but only within the confines of the sphere. More details: help/wbmsh/mshdesclocsizing_options.html
March 23, 2021 at 3:25 pmAnders_SkovlundSubscriberHi Arun,nThank you for the detailed explanation!nI am using a SI on two vertexes and it seems to me that it only affects element size on the surface and not inside the body?nIs this normal behaviour, and if so, is there a way to change it so that elements inside the body and inside the SI is sized accordingly?nnn
March 24, 2021 at 10:05 amRobAnsys EmployeeIt should also effect inside the body. Have you got any hard sizing set? n
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