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摘要

通过使用专门开发的双轴加载装置对组织样品进行增量加载和卸载,研究了体外胸主动脉的流变特性。结果表明,加载和卸载作用下的流变特性有显著差异。结果表明,在非线性应变的阈值以下,材料不显示任何随时间变化的响应。观察到的行为归因于主动脉壁的微观结构组成
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Rheological properties of large arteries
Rheological properties of thoracic aorta in vitro have been studied by subjecting tissue samples to incremental loading and unloading using a specially developed biaxial loading apparatus. It was found that the rheological behaviour under loading is significantly different from that under unloading. Results indicate that below a threshold value of a nonlinear strain, the material does not display any time-dependent response. The observed behavior has been attributed to the microstructural makeup of the aortic wall.<>
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