tailieunhanh - Meshing User's Guide ANSYS phần 6

Các chức năng kích thước cố định không tinh chỉnh lưới dựa trên độ cong hoặc gần. Thay vào đó, bạn chỉ định kích thước tối thiểu và tối đa và phân cấp làChức năng cảm ứng Kích thước giới hạnKích thước chức năng cố định | Local Mesh Controls Bias Type and Bias Factor For edges only use Bias Type to adjust the spacing ratio of nodes on an edge. This feature is useful for any engineering problem where nodes need to be clustered on an edge or group of edges or if there is a need to bias the mapped mesh of a face towards a specific direction with respect to the edges of the face. Bias Type can be used with all meshers except Patch Independent and Uniform Quad use Bias Type choose one of the four pre-determined patterned options depicted pictorially from the Bias Type drop down menu Then specify a Bias Factor which is defined as the ratio of the largest edge to the smallest edge. Note If Behavior is set to Hard then the number of divisions and the bias cannot be changed by the mesher. If Behavior is set to Soft then the edge divisions can be changed but the edge will be initially meshed with the specified Bias Factor. Notes on Element Sizing Keep the following notes in mind when using the Sizing control Visual aids are available to assist you. When you pick an edge the edge length is displayed. A circle is displayed adjacent to the cursor whose diameter indicates the current setting in the Element Size field. The scale ruler is displayed below the graphic and provides a good estimate of the scale of the model. Also if you specify a bias and if you set Element Size to a value other than Default the size control will be displayed graphically with the initial mesh density including any specified bias in the Geometry window. When Applying Sizes to Faces Faces adjacent to a face that has a scoped size control applied to it respect the source as part of the size function. Meshes on the adjacent faces will transition smoothly to the size on the scoped face. When size controls that have differing sizes are on adjacent entities the adjacent topology receives the smallest size. When Applying Sizes to Edges If possible the meshing algorithm places the requested number of divisions on the .

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