力矩激励器的设计和动态特性

人们愈来愈认识到,机器和其它振动源,向支撑和与之相连接的结构发射的结构声,除了平动成份之外,还有转动成份。众所周知,由于转动分量不易于激发和测量,所以很难对它评价。本文介绍一种由两根平行的磁伸缩棒构成的力矩激励器,并利用一个传递函数来研究它的特性和提出一个物理量一\     

Anisotropy of Ionic Conductivity of TbF3 Crystals

Crystallography Reports - Temperature measurements (in the range of 375–830 K) of the ionic conductivity of terbium trifluoride single crystals (structure type β-YF3) along three...     

Synthesis and Structure of Uranyl Succinate Complexes with Cyanoguanidine and Diethylacetamide

Crystallography Reports - [UO2(suc)(C2N4H4)2] · 2H2O (I) and [UO2(Deaa)4(H2О)][(UO2)2(C4H4O4)3] · 2Deaa (II) crystals (suc2– is succinate ion, C2N4H4 is cyanoguanidine, and...     

The Yttrium,Lanthanum, and Lanthanide Trifluorides: Internal Periodicity of Phase Transitions

Crystallography Reports - Internal periodicity of phase transitions (fusion and polymorphism) has been revealed in trifluorides of Y, La, and 14 lanthanides. This periodicity is determined by the...     

Crystal Structure of 3-[1-(4-Methylphenyl)-9,10-dihydro-4-azaphenanthren-3-yl]benzo[f]coumarin

Crystallography Reports - The crystal structure of the title compound is determined by single crystal X-ray structure analysis. The structure was solved by direct method and refined to a final...     

Nanostructured Crystals of Fluorite Phases Sr1 – xRxF2 + x (R Are Rare-Earth Elements) and Their Ordering. 14: Concentration Dependence of the Defect Structure of Nonstoichiometric Phases Sr1 – xNdxF2 + x As Grown (x = 0.10, 0.25, 0.40, 0.50)

Crystallography Reports - The defect structure of as grown Sr1 – xNdxF2 + x (x = 0.10–0.50) crystals grown from a melt by...     

Specific Features of Distribution and Relaxation of Elastic Stresses in Homoepitaxial CVD Films of Germanium and Diamond

Crystallography Reports - The real structures of epitaxial CVD films of germanium and diamond have been comparatively analyzed. The influence of the specific features of elastic-stress distribution...     

Group-Theoretical Classification of Aristotypes of Cation and Anion Orders in Perovskites

Crystallography Reports - A group-theoretical classification of cation and anion orders of crystals with a perovskite structure is presented. Aristotypes are idealized structures (phases), from...     

Mesophase-Preceding Crystal Packing of 4,4'-Dialkyl-Substituted Salicylideneanilines; C10H21O–C6H3(OH)–CH=N–C6H4–С7Н13) Structure

Crystallography Reports - The crystal structure of 4,4'-substituted salicylideneaniline C10H21O–C6H3(OH)–CH=N–C6H4–C7H13 has been investigated by X-ray diffraction. A...     

Crystal Structure and Some Physical Properties of CuGaIn2Se5

Crystallography Reports - Polycrystals of CuGaIn2Se5 solid solution have been synthesized for the first time. X-ray diffraction analysis revealed that the sample studied is crystallized in the...