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Updated: May 15, 2025

Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery
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Intravascular Ultrasound Image-Based Finite Element Modeling Approach for Quantifying In Vivo Mechanical Properties of Human Coronary Artery

Published on: December 6, 2024

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实验和有限元素衍生的应变场的焦点比较在3DIVUS基于血管组织在负荷下计算模型的血管组织

Caleb C Berggren1, Y F Jack Wang2, Amanda M F Sigler1

  • 1Department of Biomedical Engineering, University of Utah, Salt Lake City, UT 84112, USA.

Journal of biomechanics
|May 13, 2025
PubMed
概括

计算模型可以准确地预测动脉组织变形,但它们的准确性取决于了解特定材料的特性. 这项研究验证了有限元模型与实验数据对比,以改善血管生物力学研究.

关键词:
生物力学 生物力学可变形图像的注册方式FEBio软件套件是一套软件套件.有限元素分析的研究.血管内超声波 血管内超声波

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Engineering stress is calculated as the load divided by the original, undeformed cross-sectional area. It approximates a material under load. This approximation is especially relevant post-yield in ductile materials. Though engineering stress-strain diagrams are often used for their convenience and accessibility, they can sometimes fall short in accuracy, particularly when dealing with large strain values.
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Normal strain under axial loading is an important concept in the field of mechanics of materials. Axial loading implies the application of a force along the axis of a material, like a column or bar. This force can either compress or stretch the material. In the context of axial loading, normal strain is the deformation experienced by the material in the direction of the loading force. It's calculated as the change in length divided by the original length of the material. This unitless ratio...
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Three-Dimensional Analysis of Strain

Three-dimensional strain analysis is crucial for understanding how materials deform under stress, particularly in elastic, homogeneous materials. This method employs principal stress axes to simplify complex stress states into more understandable forms. Subjected to stress, a small cubic element within a material either expands or contracts along these axes, transforming into a rectangular parallelepiped. This transformation effectively illustrates the material's deformation. The principal...
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Transformation of Plane Strain

When analyzing elongated structures like bars subjected to uniformly distributed loads, it is essential to understand the transformation of plane strain when coordinate axes are rotated. This transformation helps to assess how material deformation characteristics vary with orientation, which is crucial in materials science and structural engineering.
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