Micromechanical modelling of skeletal muscles: from the single fibre to the whole muscle
Micromechanical modelling of skeletal muscles: from the single fibre to the whole muscle
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DOI：
10.1007/s00419-009-0378-y
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发表时间：
2010-05-01
影响因子：
2.8
通讯作者：
Boel, Markus
中科院分区：
文献类型：
--
作者：
Boel, Markus
骨骼肌的结构由其等级结构所支配，在该结构中，成千上万的肌肉纤维排列在结缔组织网络中。单一的肌肉纤维由许多产生力量的细胞组成，称为肌节，它们有助于整个肌肉的收缩。关于肌肉力量和灵活性的优化，有很多问题。为了回答这些问题，数值测试工具，例如以有限元模型的形式，可以是标准实验研究的适当替代。目前的方法主要是基于有限元方法的使用。肌肉的物质行为被相加地分为所谓的主动部分和被动部分。为了描述被动部分，推导了由一个四面体单元和六个桁架单元组成的特殊单元。嵌入到这些单元细胞中的是代表肌肉纤维束的非线性桁架单元。除了材料模型的表示，这一贡献集中在基于解剖学的3D问题上的应用，例如大鼠的动物比目鱼肌。
The structure of a skeletal muscle is dominated by its hierarchical architecture in which thousands of muscle fibres are arranged within a connective tissue network. The single muscle fibre consists of many force-producing cells, known as sarcomeres, which contribute to the contraction of the whole muscle. There are a lot of questions concerning the optimisation of muscle strength and agility. To answer these questions, numerical testing tools, e.g. in the form of finite element models can be an adequate alternative to standard experimental investigations. The present approach is crucially based on the use of the finite element method. The material behaviour of the muscle is additively split into a so-called active and a passive part. To describe the passive part special unit cells consisting of one tetrahedral element and six truss elements have been derived. Embedded into these unit cells are non-linear truss elements which represent bundles of muscle fibres. Besides the representation of the material model, this contribution focuses on the application to anatomically based 3D problems, as the animal soleus muscle of the rat.