Search results for "Torsional stress"

showing 2 items of 2 documents

trans-4-Bromo-ONN-azoxybenzene at 100 K.

2004

The crystal structure of the alpha isomer of trans-4-bromoazoxybenzene [systematic name: trans-1-(bromophenyl)-2-phenyldiazene 2-oxide], C(12)H(9)BrN(2)O, has been determined by X-ray diffraction. The geometries of the two molecules in the asymmetric unit are slightly different and are within approximately 0.02 A for bond lengths, approximately 2 degrees for angles and approximately 3 degrees for torsion angles. The azoxy bridges in both molecules have the typical geometry observed for trans-azoxybenzenes. The crystal network contains two types of planar molecules arranged in columns. The torsion angles along the Ar-N bonds are only 7 (2) degrees, on either side of the azoxy group.

DiffractionAzoxyCrystal structureIsomersTorsion (mechanics)X ray diffraction analysisGeneral MedicineCrystal structureMolecular dynamicsGeneral Biochemistry Genetics and Molecular BiologyBond lengthCrystalchemistry.chemical_compoundCrystallographyTorsional stressMolecular geometrychemistrySubstitution reactionsOxidationMoleculeActa crystallographica. Section C, Crystal structure communications
researchProduct

Determination of Torsional Stresses in Shafts: From Physical Analogies to Mathematical Models

2015

This paper presents the historical development of methods used for the study of torsional stresses in shafts. In particular, the paper covers both analog methods, especially those based on electrical analogies proposed circa 1925, and numerical methods, especially finite difference methods (FDM), finite element methods (FEM) and boundary element methods (BEM).

Mathematical modelbusiness.industryNumerical analysisElectrical analogTorsional stress analysis BEM FEMFinite difference methodStructural engineeringMechanicsFinite element methodSettore ING-IND/14 - Progettazione Meccanica E Costruzione Di MacchineDevelopment (topology)businessBoundary element methodMathematics
researchProduct