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.
本文提出了一个用于消除空间杆梁结构有限元模型中的无刚度“奇点”的元素及相应的刚度矩阵计算公式。
In this paper, a new type of elements and the stiffness matrix have been developed, which can be used to eliminate the singularity in the finite element model such as space truss and frame.
使用最佳元素大小的非线性有限元模型对78例日本老年女性进行脊椎强度的评价。
Vertebral strength was assessed in 78 elderly Japanese women using an FEM with the optimum element size.
随后，可以利用边界条件和尺寸信息来构建2d结构，其被利用来通过用2d元素适当地啮合结构来创建有限元模型。
Then a 2d structure can be built with the boundary condition and size information, which is utilized to create a finite element model by appropriately meshing a structure with 2d elements.
该正交三梁模型可准确模拟基础刚度矩阵的各主元素和交叉项，简单实用，便于结构有限元建模，具有推广价值。
The present model, as a simplified, practical but precise method, can simulate foundation stiffness matrix including the principal terms and the cross terms. It is worthy of widely application.
该正交三梁模型可准确模拟基础刚度矩阵的各主元素和交叉项，简单实用，便于结构有限元建模，具有推广价值。
The present model, as a simplified, practical but precise method, can simulate foundation stiffness matrix including the principal terms and the cross terms. It is worthy of widely application.
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