文中详细介绍了如何建立用于求解小尺度封闭空间低频声传递函数的三维有限元素模型。
This paper introduces how to establish Three-dimension finite element model to solute low frequency sound transfer function in small-enclosed room.
方法：我们使用了一个关于L4-L5腰椎的3维非线性有限元素法的模型。
Methods. A 3-dimensional, nonlinear finite element model of a lumbar spinal segment L4-L5 was used.
本文用有限元素法建立织编机机架的力学模型，并计算了机架的低阶固有频率及相应的振型。
The natural modes and frequencies of the framework of a knit-weaving machine are determined and its mechanic model established on the basis of finite element method.
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