论文标题
软组织的主要负po弹效应
Dominant negative Poynting effect for soft tissues
论文作者
论文摘要
我们确定了三种不同的剪切模式，用于横向各向同性软组织的简单剪切变形，从而允许正po和负po弹性效应（也就是说，它们分别需要压缩和拉伸的侧向正常应力，以维持简单的剪切）。阳性的po症效果通常是各向同性橡胶的。 Here, specialisation of the general results to three strain-energy functions which are quadratic in the anisotropic invariants, linear in the isotropic strain invariants and consistent with the linear theory suggests that there are two Poynting effects which can accompany the shearing of soft tissue: a dominant negative effect in one mode of shear and a relatively small positive effect in the other two modes.我们建议，纤维相对于基质的相对不可扩展性是这种较大的负面po效应背后的主要机制。
We identify three distinct shearing modes for simple shear deformations of transversely isotropic soft tissue which allow for both positive and negative Poynting effects (that is, they require compressive and tensile lateral normal stresses, respectively, in order to maintain simple shear). The positive Poynting effect is that usually found for isotropic rubber. Here, specialisation of the general results to three strain-energy functions which are quadratic in the anisotropic invariants, linear in the isotropic strain invariants and consistent with the linear theory suggests that there are two Poynting effects which can accompany the shearing of soft tissue: a dominant negative effect in one mode of shear and a relatively small positive effect in the other two modes. We propose that the relative inextensibility of the fibres relative to the matrix is the primary mechanism behind this large negative Poynting effect.
