AN ANALYSIS OF THE UNCONFINED COMPRESSION OF ARTICULAR-CARTILAGE
AN ANALYSIS OF THE UNCONFINED COMPRESSION OF ARTICULAR-CARTILAGE
复制标题
DOI：
10.1115/1.3138475
复制
发表时间：
1984-01-01
影响因子：
1.7
通讯作者：
MOW, VC
中科院分区：
文献类型：
--
作者：
ARMSTRONG, CG;LAI, WM;MOW, VC
得到了圆柱形试件在光滑、不透水的平板之间无侧限压缩时的内部变形场和流动场以及外部可见的蠕变、应力松弛和恒应变率行为的解析解。圆柱形试件是充满流体的多孔弹性固体，如关节软骨。瞬间，“两相”连续体在体积上不变地变形，表现为具有相同剪切模数的不可压缩弹性固体。径向流体流动使内部流体压力与外部环境保持平衡。平衡响应由固体基质的杨氏模数和泊松比控制。
Analytical solutions have been obtained for the internal deformation and fluid-flow fields and the externally observable creep, stress relaxation, and constant strain-rate behaviors which occur during the unconfined compression of a cylindrical specimen of a fluid-filled, porous, elastic solid, such as articular cartilage, between smooth, impermeable plates. Instantaneously, the “biphasic” continuum deforms without change in volume and behaves like an incompressible elastic solid of the same shear modulus. Radial fluid flow then allows the internal fluid pressure to equilibrate with the external environment. The equilibrium response is controlled by the Young’s modulus and Poisson’s ratio of the solid matrix.