Abstract
This paper presents a new method for fast visualization of finite element analysis results using multiresolution meshes. The original mesh of a finite element model is coarsened and simplified to quickly visualize finite element results, and the simplified coarse mesh is overlaid with the original mesh in local regions of high stress gradients. Local regions of high stress gradients are efficiently detected by using pre-computed weights for shape function derivatives of finite elements. A parallelization scheme is applied to further accelerate the visualization speed of finite element analysis results. Numerical results show that the present method can be appliable to fast visualization of finite element analysis results in real-time simulations.
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Abbreviations
- x :
-
Element x coordinate of the hexahedral element
- y :
-
Element y coordinate of the hexahedral element
- z :
-
Element z coordinate of the hexahedral element
- ξ :
-
Reference ξ coordinate of the master element
- η :
-
Reference η coordinate of the master element
- ζ :
-
Reference ζ coordinate of the master element
- σ :
-
Element von-Mises stress of the hexahedral element
- N I :
-
Shape function of node I of the hexahedral element
- x I :
-
Nodal x coordinate at node I of the hexahedral element
- y I :
-
Nodal y coordinate at node I of the hexahedral element
- z I :
-
Nodal z coordinate at node I of the hexahedral element
- ξ I :
-
Nodal ξ coordinate at node I of the master element
- η I :
-
Nodal η coordinate at node I of the master element
- ζ I :
-
Nodal ζ coordinate at node I of the master element
- σ I :
-
Nodal von-Mises stress at node I of the hexahedral element
- \(W_x^I\) :
-
Weight for the x direction at node I of the hexahedral element
- \(W_y^I\) :
-
Weight for the y direction at node I of the hexahedral element
- \(W_z^I\) :
-
Weight for the z direction at node I of the hexahedral element
- ∣∇ σ∣e :
-
Magnitude of the element von-Mises stress gradient at the center of the hexahedral element
- ∣∇ σ∣FEM :
-
Magnitude of the element von-Mises stress gradient of FEM at the center of the hexahedral element
- ∣∇ σ∣Weight :
-
Magnitude of the element von-Mises stress gradient of weight at the center of the hexahedral element
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Acknowledgments
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1A4A2000791).
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Jin-Hoo Kim is a master student of the School of Mechanical Engineering, Seoul National University of Science and Technology Graduate School, Seoul, Korea. He received his B.S. in Mechanical & Automotive Engineering from Seoul National University of Science and Technology. His research interests include finite element method, model order reduction and hyper-reduction method.
Hyun-Gyu Kim is a Professor in Department of Mechanical and Automotive Engineering at Seoul National University of Science and Technology. He received his Ph.D. degree from Korea Advanced Institute of Science and Technology in 1998. His research interests are in the area of computational solid mechanics with a particular emphasis on the development of novel numerical methods, fracture mechanics, shape and topology optimization, real-time finite element analysis and multi-scale analysis.
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Kim, JH., Kim, HG. Fast visualization of finite element analysis results using multiresolution meshes. J Mech Sci Technol 36, 4625–4633 (2022). https://doi.org/10.1007/s12206-022-0824-0
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DOI: https://doi.org/10.1007/s12206-022-0824-0