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| 1 | Thermo-magnetic analysis of thick-walled spherical pressure vessels made of functionally graded materials显示文摘This study presents an analytical solution of thermal and mechanical displacements, strains, and stresses for a thick-walled rotating spherical pressure vessel made of functionally graded materials (FGMs). The pressure vessel is subject to axisymmetric mechanical and thermal loadings within a uniform magnetic field. The material properties of the FGM are considered as the power-law distribution along the thickness. Navier’s equation, which is a second-order ordinary differential equation, is derived from the mechanical equilibrium equation with the consideration of the thermal stresses and the Lorentz force resulting from the magnetic field. The distributions of the displacement, strains, and stresses are determined by the exact solution to Navier’s equation. Numerical results clarify the influence of the thermal loading, magnetic field, non-homogeneity constant, internal pressure, and angular velocity on the magneto-thermo-elastic response of the functionally graded spherical vessel. It is observed that these parameters have remarkable effects on the distributions of radial displacement, radial and circumferential strains, and radial and circumferential stresses. | M. A. NEMATOLLAHI A. DINI M. HOSSEINI | 2019 | Applied Mathematics and Mechanics(English Edition)2019，40，6： | 2 |
| 2 | THE COMPARISON OF LOADING FORMS IN ISOTOPIC MEASUREMENT OF LITHIUM BY THERMAL IONIZATION MASS SPECTROMETRY显示文摘I. INTRODUCTION Lithium as a nucleal material has been applied in nucleal industry extensively, The geologists are very interested in lithium isotopic compositions which are an important method for studying cosmology. Thus, it is essential to determine precisely and accurately the isotopic ratio of lithium. The large relative mass difference between the | 肖应凯 祁海平 王蕴慧 金琳 | 1992 | Chinese Science Bulletin1992，37，6： | 0 |
| 3 | POSTBUCKLING OF IMPERFECT STIFFENED CYLINDRICAL SHELLS UNDER COMBINED EXTERNAL PRESSURE AND HEATING显示文摘A postbuckling analysis is presented for a stiffened cylindrical shell of finitelength subjected to combined loading of external pressure and uniform temperaturerise. The formulations are based on a boundary layer theory of shell buckling, whichincludes the effects of nonliear prebuckling deformations, nonlinear large deflectonsin the postbuckling range and initial geometrical imperfections of the shell. The'smeared sitffener' approach is adopted for the sitffeners. The analysis uses a singular perturbation technique to determine the interactive buckling loads and the postbucklingequilibruium paths. Numerical examples cover the performances of perfect and imperfect, stringer and ring stiffened cylindrical shells. Typical resuts are presented in dimensionless graphical form. | 沈惠申 | 1998 | Applied Mathematics and Mechanics(English Edition)1998，19，5： | 0 |
| 4 | INFLUENCE OF TEMPERATURE-DEPENDENT PROPERTIES ON THERMAL STRESSES RESPONSE AND OPTIMUM DESIGN OF C/M FGMS UNDER THERMAL CYCLIC LOADING显示文摘The influence of temperature-dependentproperties on thermal stresses response and optimum design ofnewly developed ceramic-metal functionally graded materialsunder cyclic thermal loading and high temperature gradientenvironment is studied. The thermal conductivity of materialis considered to be dependent on the temperature. In this pa-per, the thermal stresses response of the material is calculatedusing a nonlinear finite element method. Emphasis is placedon the influence of temperature-dependent properties on thethermal stresses response characteristics, the thermal stressesrelaxation properly and the thermal stresses history under thedifferent graded compositional distributions and differentheat flux magnitudes. Through the analysis, it is suggestedthat the influence of temperature-dependent properties can notbe neglected in the thermal stresses response analysis and theoptimum design process of the material must be based on thetemperature-dependent thermo-elastic-plastic theory. | 翟鹏程 | 1997 | Journal of Wuhan University of Technology(Materials Science)1997，12，4： | 0 |
| 5 | THERMO-ELASTIC-PLASTIC RESPONSE AND OPTIMUM DESIGN OF CERAMIC-METAL FGMS-CYCLIC THERML LOADING PROBLEM显示文摘The materials are made with a graded composition and microstructure in the thickness direction from the ceramic side to the metal side. The cyclic thermal loading and high temperasure gradient environment are simulated by heating the ceramic surface with a cyclic heat flux input and cooling the metal surface with a flawing liquid niterogen. The thermal and thermo-elastic-plastic response of the materials is calculated using the isotropic hardening model and kinetic hardening model. Emphasis | Zhai, PC Zhang, QJ Yuan, RZ | 1999 | Journal of Wuhan University of Technology(Materials Science)1999，14，2： | 0 |
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