Introduction to elastic wave propagationdoi:10.1016/0040-1951(95)90063-2LeonKnopoffSDOSTectonophysics
The key focus is to familiarize readers with the concepts of elastic and electromagnetic wave propagation, which are central to geophysical studies. Elastic waves and electromagnetic waves are two important ways that energy is transported in the world around us. These important concepts are presented ...
弹性波,时域显式接口简介 COMSOL Multiphysics®软件 5.5 版本中提供了一个节省内存的物理场接口,用于模拟弹性波在固体中的传播(结构中的振动)。该弹性波,时域显式接口基于时域显示时间积分方案的高阶间断伽辽金法,可以实现声学大型模型的高效多核计算。该接口可实现多物理场耦合,并且可以耦合到流体域。今天,我们将...
Elastic Waves in Periodic Composites: Phononic Crystals Electromagnetic Waves in Periodic Structures Photonic Bandgaps in Layered Periodic Media Dynamical Theory of X-Ray Diffraction Bandgaps in Three-Dimensional Photonic Crystals Quasi-Phase-Matching in Nonlinear Optical Crystals ...
2.1 One-Dimensional Elastic-Plastic Stress Wave in Bars 19 2.1.1 A Semi-Infinite Bar Made of Linear Strain-Hardening Material Subjected to a Step Load at its Free End 21 2.1.2 A Semi-Infinite Bar Made of Decreasingly Strain-Hardening Material Subjected to a Monotonically Increasing Load at ...
Wave intensity analysis applies methods first used to study gas dynamics to cardiovascular haemodynamics. It is based on the method of characteristics solution of the 1-D equations derived from the conservation of mass and momentum in elastic vessels. The measured waveforms of pressurePand velocityUar...
Biot MA (1956b) Theory of propagation of elastic waves in a fluid-saturated porous solid. II. Higher frequency range. J Acoust Soc Am 28:179–191, DOI 10.1121/1.1908241 Google Scholar Birch F (1960) The velocity of compressional waves in rocks to 10 kilobars, Part 1. J Geophys Res ...
3.1 Waves in Homogeneous, Isotropic, Elastic, Solid Media 173 3.1.1 The Components of Stress 173 3.1.2 The Equations of Motion 174 3.1.3 The Components of Strain 175 3.1.4 The Relationship Between Stress and Strain – The Constitutive Equations 177 3.1.4.1 Hooke’s Law – Tensor Form 177...
Modelling the transient strain using the elastic wave equation and connecting the driving photo-induced stress via the Grüneisen parameter to energy-density changes in the microscopic subsystems of the solid, i.e., electrons, phonons, and spins, provides an opportunity to reveal ultrafast energy ...
In COMSOL Multiphysics®, the layered material features likeLinear Elastic Material, Layered;Hyperelastic Material, Layered; andPiezoelectric Material, Layeredin theShellinterface are based on ESL-FSDT theory. There is also aLinear Elastic Material, Layeredfeature in theMembraneinterface based on the ES...