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The paper deals with nonlinear elasticity of blood arterial duct, in which the artery is modeled to bea locally triclinic, transverse isotropic, incorapressible, axisymmetric and thickwalled tube with large deformations, The nonlinear coustitutive relationship of arterial tissues is based on the theorv of Green and Adkins. A nonlinear strain energy density function is introduced for nonlinear stress-strain relationship of second order, in which the coefficient of each term is expressed by means of a Lame’s constant, The elasticity constants are nqcessary to describe such a uonlinear finite strain etastieity of the second order, These constants are determined by means of the stress-strain increment theory. 相似文献
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澳大利亚空间技术公司(Auspace Ltd.)发明了一种便携式卫星信号接收器。该卫星信号接收器与美国国防部的21—卫星导航设备的地面定位系统相联络。 Auspace接收器采用一台数字信号处理机,一大功率计算机集成电路块,并采用开环相位相干设计。这样,它能使接收器不受剧烈振动的影响。据称,这种卫星信号接收器使用五个频道系统,能不断地调整同时来自五个卫星的信号,使接收器能特别精确地指向并确定地面目 相似文献
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日本索尼公司最近已研制成两种大容量读写放大器集成电路。这些集成电路可用于硬质磁盘传动装置或简易盒式磁盘传动装置。一种读写放大器集成电路的型号为CXA1660Q,它采用的是使磁头微调电路超细化的脉冲,能用于硬质磁盘传动装置,它可以大大减小误差率,而且可增加 相似文献
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