虚拟手术系统中的软组织切割模拟

Soft Tissue Cutting in Virtual Surgery System

本研究提出了一个基于有限元形变计算的利用最小子集法进行切割模拟的优化方法,该方法解决了切割过程中刚度矩阵不断扩充更新对形变计算带来的影响,便于进行切割模拟。实验结果表明,该方法能够有效地动态模拟软组织的整个切割过程。

An optimized method of soft tissue cutting based on minimal element subdivision and Finite Element Model （FEM） deformation computing was presented. The adverse effect of deformation computation derived by the stiff matrix expansion during cutting process was solved by the method. The experiment result shows that the method can simulate the soft tissue dynamic cutting process effectively.