9 The wavelength of a progressive wave is defined as the distance between adjacent points on the wave which C A have the same displacement. B have the same amplitude. C are in phase. D are in antiphase. 相关知识点: 试题来源: 解析 CA-not a correct descriptionB-not a correct description...
The excitation of a progressive plate wave by laser irradiation is reported. The photothermal effect caused by multi-beam laser irradiation is used for generating the progressive plate wave. The driving force is the bending moment of the photothermal effect in the plate-like sample. The proposed ...
The nonlinear progressive-wave equation (NPE) model has been reformulated for wider propagation angle accuracy. The wide angle NPE results from range-integrating the second order time domain nonlinear wave equation rather than reducing it to a first order equation in time as in the original NPE. ...
Consider a particle possessing either spherical symmetry, or dimensions much smaller than the incident wavelength, illuminated along the z axis by an incident plane wave. In all that follows, we consider its center of mass is taken as the origin of the coordinate system. In or outside the ...
According to Lemaitre's strain-equivalent principle (Lemaitre, 1984), the constitutive relationship of damaged material (D≠0) can be obtained from the constitutive equation of non-damaged material (D = 0), and the nominal stress in the relationship of non-damaged material can be replaced ...
Nearly thirty years since its inception, the combined finite-discrete element method (FDEM) has made remarkable strides in becoming a mainstream analysis tool within the field of Computational Mechanics. FDEM was developed to effectively “bridge the gap” between two disparate Computational Mechanics ap...
Two matricesHF,HLare combined into a single matrixHusing the following equation22. $$ {\mathbf{H}} = \left( {{\mathbf{HL}}^{T} {\mathbf{HL}}} \right)^{ - 1} {\mathbf{HL}}^{T} {\mathbf{HF}} $$ (7) in whichHis the characteristic matrix of the under-studying problem. Fro...
关键词: Propagation of waves distribution of voids surface stress volume fraction field wave velocity equation surface waves DOI: 10.1007/BF02745570 被引量: 1 年份: 1996 收藏 引用 批量引用 报错 分享 全部来源 免费下载 求助全文 Springer (全网免费下载) Springer 国家科技图书文献中心 (权威机构) dx...
One more interesting application of Lévy processes is so-called fractional quantum mechanics26, dealing in short with the substitution of the ordinary Laplacian with the fractional one in the stationary Schrödinger equation. The solution to such a problem, if it exists, represents the spectrum of...
Memory effects in seismology—such as the occurrence of aftershock sequences—are implicitly assumed to be governed by the time since the main event. However, experiments are yet to identify if memory effects are structural or time-dependent mechanisms.