Development of a Human Finger Model with the CAE SoftwareSIMPACK
Development of a Human Finger Model with the CAE SoftwareSIMPACK
复制标题
使用 CAE 软件SIMPACK 开发人体手指模型
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
A. Goss
中科院分区：
文献类型：
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作者：
A. Goss
本文利用商业软件SIMPACK建立了中指的生物力学模型。这个多体系统由以下部分组成：四块骨骼、三个关节、六块肌肉和六根韧带。为了描述关节的形态和手指的运动学，采用了三维接触模型。从人类手的CT图像中提取接触面，并使用多边形表示将其输出到仿真软件。此外，在SIMPACK中还开发了新的用户元素，以实现手部外在肌肉沿手指的多重附着。在没有任何约束的情况下执行完整的多实体仿真。在进行静态平衡计算后，通过单肌肉激活来研究手指的自由运动，并提供了模拟关节运动与真实关节运动之间的最终验证。利用光学跟踪系统VICON从实际手中捕捉到的运动数据与仿真匹配，并计算出位置和角度残差。验证的重点是中指的两个指间关节。结果表明，多体仿真是进行手指关节运动学仿真的有效方法。
This thesis concerns the development of a biomechanical model of the middle finger with the commercial software SIMPACK. This multi-body system consists of the following components: Four bones, three joints, six muscles and six ligaments. In order to describe the morphology of the joints und thus the finger kinematics a three-dimensional contact model is used. The contact surfaces are extracted from CT images of a human hand and exported to the simulation software using a polygonal representation. In addition, new user elements are developed in SIMPACK to realise the multi-attachment of the extrinsic hand muscles along the finger. The complete multi-body simulation is performed without any constraints. After conducting the static equilibrium calculations, the free movement of the finger is investigated by single activation of the muscles and a final validation between the simulated and real joint movement is provided. The movement data, which is captured from the real hand with the optical tracking system VICON, is matched to the simulation and the position and angle residuals are calculated. The validation is focused on both interphalangeal joints of the middle finger. It is concluded that multi-body simulations represent an effective method to conduct kinematic simulations of human finger joints.