【摘要】 提出了血管支架形状系数概念,用以描述形状的力学性能。基于弯曲梁的塑性理论,建立了两种血管支架扩展力形状系数。在考虑材料和血管支架半径相同的情况下,进一步得到了一个简单形式的形状系数。计算结果和实验都显示,血管支架存在极限载荷;不同宽度、厚度的血管支架,只要它们的形状一样,则它们具有相同的形状系数。这揭示了形状系数概念的意义,验证了公式的正确性。更多还原

【Abstract】 In this paper,we advance a concept,shape coefficient,to describe the mechanical properties of shape factor concretely.Two sorts of shape coefficient are deduced from the plastic theory of bending beam.Under conditions of the same material and radius,a simple form of shape coefficient is acquired.The relevant computing results and experiment show that the limit load of vascular stent exists,and vascular stents in different width-thickness have the same shape coefficient so long as they are the same shape.These reveal the significance of the concept of shape coefficient and verify the correctness of the formula.更多还原