Computational model of the tongue
Computational model of the tongue
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DOI：
10.1121/1.1995215
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发表时间：
1975-04
影响因子：
2.4
通讯作者：
S. Kiritani;K. Miyawaki;O. Fujimura;J. E. Miller
中科院分区：
文献类型：
--
作者：
S. Kiritani;K. Miyawaki;O. Fujimura;J. E. Miller
为了研究某些外在和内在肌肉在语音产生中的生理功能，已经编写了一个计算机程序，用于将舌头模拟为三维静态弹性系统。采用44个四面体来代表舌的一半，假设相对于正中矢状面对称。在每个四面体中假设均匀的应力和应变分布，弹性常数表示近似的体积不可压缩性，节点（顶点）的位移通过有限元法计算。整组四面体被分成14个功能单元，每个功能单元可以在任何方向上被独立地指定均匀应力，代表独立的肌肉收缩。此外，特定的节点可以被外力拉动。针对给定的肌肉收缩集合迭代地进行几次计算，从而导出与腭部和其他边界约束一致的变形。那个...
A computer program for simulation of the tongue as a three‐dimensional static elastic system has been written for studying the physiological functions of certain extrinsic and intrinsic muscles in speech production. Forty‐four tetrahedra are employed to represent one‐half of the tongue, assuming symmetry in respect to the midsagittal plane. Uniform stress and strain distribution is assumed in each tetrahedron, with elastic constants representing an approximate volume incompressibility, and displacements of the nodal points (vertices) are calculated by the finite‐element method. The entire set of tetrahedra are grouped into 14 functional units, each of which can be given independently specified uniform stress in any direction representing an independent muscle contraction. In addition, specific node points can be pulled by an external force. Computation is made iteratively a few times for a given set of muscle contractions deriving a deformation consistent with palatal and other boundary constraints. The r...