Development of Mechanical Analysis System for Facial-Expression Wrinkling by the Finite Element Method

面部表情皱纹有限元力学分析系统的开发

• 批准号: 02805015
• 负责人: TSUTA Toshio
• 金额: $ 1.28万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02805015/
• 关键词: Biomechanics; Facial Wrinkling; Finite Element Analysis; Soft Tissue; Hyperelasticity; Finite Deformation; Post Buckling Analysis; Identification of Mech. Nature; invivo物性同定; パイオメカニックス; 顔表情しわ; 生体軟組織; 有限要素法; 超弾性体; バイオメカニックス

This paper presents a method of finite element analysis for finite deformation of layered skin and under-skin tissues applicable to facial expression. The hyperelastic constitutive equation for skin and under-skin tissues are identified from experimental work in vitro by using strain-energy function. Green strain for finite deformation and the hyperelastic constitutive equation with incompresibility are linearlized in incremental form and the governing matrix equation are solved on each loading step. Some tensile tests on layered skin and under-skin tiessues with a hole,and indentation tests on similar specimens, have been carried out by two-axial tensile-test apparatus, within a vessel fulfilled by physiological salt water and compared with calculation results. It was shown that both results are well coincident with each other.Analysis and Experiments on forehead wrinkling have been carried out by using the finite element method.Wrinkling analysis, in which hyperelastic and large deformation formulations for skin structure are incrementally solved as buckling and post buckling problems,has been developed based on the finite element method. Physical nature of skin-structure,facial configuration and in plane distorsion of forehead skin by facial expression are measured in vivo state and used as data for numerical calculations. The calculation results for wrinkling are compared with experimental results on actual human and satisfactory coincidences between them are confirmed. Some kinds of in vitro wrinkling tests for rabbit skin structure are also examined and similar results to the above is obtained.

本文提出了一种适用于面部表情的层状皮肤和皮下组织有限变形有限元分析方法。利用应变能函数从体外实验中确定了皮肤和皮下组织的超弹性本构方程。有限变形格林应变和不可压缩超弹性本构方程以增量形式线性化，并在每一步加载下求解控制矩阵方程。在生理盐水充填的容器中，用双轴拉伸试验仪对层状皮肤和带孔的皮下组织进行了拉伸试验，并对类似的试件进行了压痕试验，并与计算结果进行了比较。利用有限元方法对前额起皱问题进行了分析和实验，将蒙皮结构的超弹性和大变形的褶皱方程增量地分解为屈曲和后屈曲问题，建立了基于有限元方法的褶皱分析方法。在活体状态下测量了皮肤结构的物理性质、面部形态和面部表情引起的额部皮肤的平面变形，并将其作为数值计算的数据。将起皱计算结果与人体实验结果进行了比较，两者吻合较好。本文还对几种兔皮肤结构的体外起皱试验进行了检验，得到了与上述结果类似的结果。

项目成果

蔦 紀夫,王 丘立,山根 健二: "表情機構のコンピュ-タ・シミュレ-ション(その2.生体軟組織部の多層超弾性体の有限変形解析)" 第2回バイオエンジニアリング・シンポジウム論文集(日本機械学会論文集投稿中). NO.920ー7. 63-65 (1992)

Norio Tsuta、Quritoshi Wang、Kenji Yamane：“面部表情机制的计算机模拟（第2部分。生物软组织中多层超弹体的有限变形分析）”第二届生物工程研讨会论文集（日本）目前正在提交给Proceedings of the日本机械工程师学会）NO.920-7（1992）。

蔦 紀夫,岡本 伸吾,山根 健二,山崎 哲也: "スキン-皮脂系の表情しわ生成に関する後座屈解析と実験" 日本機械学会第5回バイオ・エンジニアリング部門講演会. (1993)

Norio Tsuta、Shingo Okamoto、Kenji Yamane、Tetsuya Yamazaki：“皮肤-皮脂系统中面部皱纹形成的后屈曲分析和实验”日本机械工程师学会第五届生物工程分部会议（1993）。

蔦 紀夫、山根 健二: "スキン-皮下組織系の超弾性構成則の有限要素法によるin vivo同定" 第42回 応用力学連合講演会講演論文集、. P277-280 (1993)

Norio Tsuta、Kenji Yamane：“使用有限元法对皮肤-皮下组织系统的超弹性本构定律进行体内识别”第 42 届应用力学联盟会议论文集，P277-280 (1993)

Toshio TSUTA ChunLi Wang: "Analysis of Facial Wrinkling by the Finite Element Method" Proc.Intern.Symp.on Computer Method in Biomechanics & Biomedical Engineering.Swansea. 183-193 (1992)

Toshio TSUTA ChunLi Wang：“用有限元法分析面部皱纹”Proc.Intern.Symp.on Computer Method in Biomechanics

Toshi Tsuta, Chunli Wang and Kenji Yamane: "Analysis of Facial Wrinkling by the Finite Element Method" Proc. Intern. Symp.on Comp. Mech. in Biomech. & Biomed. Engng.183-193 (1992)

Toshi Tsuta、Chunli Wang 和 Kenji Yamane：“面部皱纹的有限元方法分析”Proc。