需要横向菌株数据,以便将动脉组织的构成模型与单轴试验相匹配
1Institute of Solid Mechanics, Mechatronics and Biomechanics, Brno University of Technology, Technicka 2896/2, 616 69, Brno, Czech Republic.
Journal of the mechanical behavior of biomedical materials
|December 13, 2023
概括
估计动脉组织材料参数需要考虑横向菌株. 忽视这些数据会导致不切实际的模型,而包括它可以确保准确的预测,没有额外的努力.
科学领域:
- 生物力学 生物力学
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 对材料参数的准确估计对于模拟动脉等软生物组织至关重要.
- 传统方法通常仅依赖纵向应力-应变数据,可能忽视横向应变的关键信息.
研究的目的:
- 评估将横向菌株数据纳入动脉组织材料参数估计的影响.
- 为了比较标准 (仅纵向数据) 与增强 (包括横向数据) 配套策略的预测和描述能力.
主要方法:
- 分析了两个合适策略:A策略 (标准的纵向数据) 和B策略 (增强的,包括横向菌株数据).
- 从现有文献中使用大量动脉组织物质数据数据集进行评估.
- 适用于用于纤维软组织的各种构成模型.
主要成果:
- 策略A忽视横向菌株数据,经常导致不切实际的模型预测,包括辅助性行为.
- 战略B采用横向应变数据,确保模型对应变现实的应变反应.
- 即使是人工生成的横向菌株数据也被证明比完全忽视横向菌株效应更不有害.
结论:
- 从动脉组织的单轴测试数据来估计材料参数的标准方法在忽略横向菌株时是危险的.
- 考虑到横向菌株的增强合适策略,可以提供优越和现实的模型预测,而无需增加计算或测试需求.
- 精确建模动脉组织机制需要考虑横向应变行为.
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