The stress intensity factor and propagation of an inclined crack in the central layer of a composite laminate under tension

Li, S.; Wang, J.

doi:10.1016/j.tafmec.2017.07.016

Cited by 8 publications

(1 citation statement)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tissue of each layer is comprised of networks of collagen fibers embedded in a ground matrix and can be modeled as fiber reinforced composites, of which the mechanical properties are anisotropic [9,17,18], similar to engineering fiber-reinforced composites [19][20][21][22][23][24][25][26]. Schriefl at al.…”

Section: Unified-fiber-distribution (Ufd) Hyperealstic Modelmentioning

confidence: 99%

Effect of Nonlinear Hyperelastic Property of Arterial Tissues on the Pulse Wave Velocity Based on the Unified-Fiber-Distribution (UFD) Model

et al. 2023

View full text Add to dashboard Cite

Pulse wave velocity (PWV) is a key, independent risk factor for future cardiovascular events.The Moens-Korteweg equation describes the relation between PWV and the stiffness of arterial tissue with an assumption of isotopic linear elastic property of the arterial wall. However, the arterial tissue exhibits highly nonlinear and anisotropic mechanical behaviors. There is a limited study regarding the effect of arterial nonlinear and anisotropic properties on the PWV. In this study, we investigated the impact of the arterial nonlinear hyperelastic properties on the PWV, based on our recently developed unified-fiber-distribution (UFD) model. The UFD model considers the fibers (embedded in the matrix of the tissue) as a unified distribution, which expects to be more physically consistent with the real fiber distribution than existing models that separate the fiber distribution into two/several fiber families. With the UFD model, we fitted the measured relation between the PWV and blood pressure which obtained a good accuracy. We also modeled the aging effect on the PWV based on observations that the stiffening of arterial tissue increases with aging, and the results agree well with experimental data. In addition, we did parameter studies on the dependence of the PWV on the arterial properties of fiber initial stiffness, fiber distribution, and matrix stiffness. The results indicate the PWV increases with increasing overall fiber component in the circumferential direction. The dependences of the PWV on the fiber initial stiffness, and matrix stiffness are not monotonic and change with different blood pressure. The results of this study could provide new insights into arterial property changes and disease information from the clinical measured PWV data.

show abstract