FEBio: Finite Elements for Biomechanics

In the field of computational biomechanics, investigators have primarily used commercial software that is neither geared toward biological applications nor sufficiently flexible to follow the latest developments in the field. This lack of a tailored software environment has hampered research progress, as well as dissemination of models and results. To address these issues, we developed the FEBio software suite (http://mrl.sci.utah.edu/software/febio), a nonlinear implicit finite element (FE) framework, designed specifically for analysis in computational solid biomechanics. This paper provides an overview of the theoretical basis of FEBio and its main features. FEBio offers modeling scenarios, constitutive models, and boundary conditions, which are relevant to numerous applications in biomechanics. The open-source FEBio software is written in C++, with particular attention to scalar and parallel performance on modern computer architectures. Software verification is a large part of the development and maintenance of FEBio, and to demonstrate the general approach, the description and results of several problems from the FEBio Verification Suite are presented and compared to analytical solutions or results from other established and verified FE codes. An additional simulation is described that illustrates the application of FEBio to a research problem in biomechanics. Together with the pre- and postprocessing software PREVIEW and POSTVIEW, FEBio provides a tailored solution for research and development in computational biomechanics. [DOI: 10.1115/1.4005694]

在计算生物力学领域，研究人员主要使用了商业软件，该软件既不适合生物应用，也不足够灵活，无法遵循该领域的最新发展。缺乏量身定制的软件环境阻碍了研究的进度以及模型和结果的传播。为了解决这些问题，我们开发了Febio软件套件（http://mrl.sci.utah.uta.edu/software/febio），这是一个非线性隐式有限元（FE）框架，专门用于计算固体生物力学的分析。本文概述了Febio及其主要特征的理论基础。 Febio提供与生物力学中众多应用相关的建模场景，组成型模型和边界条件。开源Febio软件是用C ++编写的，特别关注标量和现代计算机体系结构的并行性能。软件验证是Febio开发和维护的很大一部分，为了证明一般方法，提出了Febio验证套件中几个问题的描述和结果，并将其与分析解决方案或其他已建立和经过验证的FE代码的结果进行了比较。描述了一个额外的模拟，以说明Febio在生物力学中的研究问题中的应用。 Febio与预处理和后处理软件预览和PostView一起，为计算生物力学的研发提供了量身定制的解决方案。 [doi：10.1115/1.4005694]