ABAQUS Finite Element Models of Convective Transport in the Walls of Arteries Subjected to Steady and Pulsatile Pressure

B. Simon, P. Rigby, S. K. Williams
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Abstract

Porohyperelastic (PHE) finite element models (FEMs) have been useful in vascular biomechanics to study the coupled structural response and mobile fluid flux in arterial wall tissues for steady state and cyclic pressures. Previous papers [1,2,3] described PHE FEMs, which determined fluid transport response to representative pulsatile pressures. Those FE analyses have been extended and additional results are given here for cyclic (pulsatile) pressurization of rabbit aortas. The ABAQUS program and a PHE material model were used to simulate fluid transport for “intact” and “de-endothelialized” aortas subjected to “normal” and “hypertensive” pulsatile pressures at heart rates (HRs) of 60 and 120 BPM.
稳定压力和脉动压力作用下动脉壁上对流输送的ABAQUS有限元模型
孔隙超弹性(PHE)有限元模型(fem)在血管生物力学中用于研究稳态和循环压力下动脉壁组织的耦合结构响应和流动流体通量。先前的论文[1,2,3]描述了PHE fem,它确定了流体在代表性脉动压力下的输运响应。这些有限元分析已经扩展,并在此给出了兔主动脉循环(脉冲)加压的额外结果。使用ABAQUS程序和PHE材料模型来模拟在心率(HRs)为60和120 BPM时“正常”和“高血压”脉压下的“完整”和“去内皮化”主动脉的液体输送。
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