Contents
What is P refinement?
The p-refinement increases accuracy by using higher-degree shape functions. In this method, the number of nodes and the degree of shape functions are unaltered and the positions of nodes are subjected to change depending upon the required degree of accuracy.
What is HP adaptivity?
What is hp-adaptivity? Some FEM sites describe hp-adaptivity as a combination of h-adaptivity (splitting elements in space while keeping their polynomial degree fixed) and p-adaptivity (only increasing their polynomial degree).
What is P-method in FEA?
P-method. The p-method improves results by using the same mesh but increasing the displacement field accuracy in each element. This method refers to increasing the degree of the highest complete polynomial (p) within an element without changing the number of elements used.
What is H-method and P-method?
h-method: This method increases the number of elements and hence decreases the element size while keeping the polynomial order of the constant. p-method: This method increases the polynomial order of the interpolation function while keeping the number of elements constant.
What is H method and P method in Ansys?
How do you do mesh refinement?
The easiest way to refine a mesh is to use the “Refine” button at the bottom of the Mesh Tool. This will give you the option of refining the mesh locally at the selected elements, nodes, keypoints, lines, or areas, or to globally refine all of the elements in the model.
What is the difference between the P-adaptive and H-adaptive methods?
H-adaptive meshing physically adjusts the size of the mesh cell in areas of the model where smaller mesh is needed, while p-adaptive meshing adjusts the polynomial order of the mesh to improve accuracy. This is all done automatically by the software based on a desired accuracy defined by the user.
How does the p method improve the results?
p-method –> The p-method improves results by using the same mesh but increasing the displacement field accuracy in each element. This method refers to increasing the degree of the highest complete polynomial (p) within an element without changing the number of elements used.
How are H-method and p-method used?
Currently, two types method are used to demonstrate the numerical convergence of the solution : The h- and p- versions of the finite element method are different ways of adding degrees of freedom (dof) to the model (Figure 1). h-method –> The h-method improves results by using a finer mesh of the same type of element.
What does the p stand for in p method?
If there is a large difference between the two solutions, then the mesh must be made even finer and then solve the solution again. This process is repeated until the solution is not changing much from run to run. The p in p-method stands for polynomial. Large elements and complex shape functions are used in p-method problems.
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