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A novel virtual cutting method for deformable objects using high-order elements combined with mesh optimisation
Monan Wang1, Yuzheng Ma1, Fengjie Liu1
1School of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin, China.
Background:
Virtual cutting of deformable objects plays an important role in many applications, especially in digital medicine, such as soft tissue cutting in virtual surgery training system.
Methods:
We developed a novel virtual cutting algorithm, combined with mesh optimisation. A new local mesh processing method is used to control the number and quality of the elements created during the cutting process. At the same time, high-order tetrahedral elements are used to fit the cutting surface and reduce the mesh size.
Results:
In this paper, single cut, multiple cut and intersecting cut are performed on the mesh model, combined with a force feedback device, and the result obtained is that the visual feedback is higher than 30 Hz, and the tactile feedback is 800∼1000 Hz.
Conclusions:
Experimental results show that the method proposed in this paper can effectively eliminate low-quality elements and control the mesh size, thereby ensuring real-time simulation.
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