According to wave motion theory, finite element mesh size satisfying the needs of engineering calculating precision is relevant to the upper limit of frequency range of random (response) problems.

根据波动理论，满足随机响应工程计算精度要求的有限元网格大小与待求高频随机响应问题的频率范围上限有关。

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The inside mesh units have consistent size and ideal quality for the Finite Element Method. This method can establish good foundation for the further steps in virtual surgery system.

用这种方法生成的网格内部单元体的大小一致而且质量以达到了有限元方法所要求的理想网格标准，从而为虚拟手术后期有限元插值计算打下了良好的基础。

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So, it has been an important research direction in the world to study how to simplify the structure exactly, chose a suitable finite element style and mesh size to get a precise hot spot stress value.

因此，选择何种有限元程序，如何简化结构，采用哪种单元类型和网格细化方式进行分析，保证热点应力的精度己成为一个重要的研究方向。

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