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Wang Yingze, Wang Qian, Liu Dong, Song Xinnan. ASYMPTOTIC ANALYSIS OF SOLID SPHERE SUBJECTED TO THERMAL SHOCK UNDER FRACTIONAL ORDER GENERALIZED THERMOELASTICITY[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(2): 248-254. DOI: 10.6052/0459-1879-13-287
Citation: Wang Yingze, Wang Qian, Liu Dong, Song Xinnan. ASYMPTOTIC ANALYSIS OF SOLID SPHERE SUBJECTED TO THERMAL SHOCK UNDER FRACTIONAL ORDER GENERALIZED THERMOELASTICITY[J]. Chinese Journal of Theoretical and Applied Mechanics, 2014, 46(2): 248-254. DOI: 10.6052/0459-1879-13-287
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ASYMPTOTIC ANALYSIS OF SOLID SPHERE SUBJECTED TO THERMAL SHOCK UNDER FRACTIONAL ORDER GENERALIZED THERMOELASTICITY

  • Department of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China

Funds: The project was supported by the National Natural Science Foundation of China (11102073, 51206062), the China Postdoctoral Science Foundation (2012M511207), the Specialized Research Fund for the Doctoral Program of Higher Education of China (20113227120012), the Research Foundation of Advanced Talents of Jiangsu University (10JDG055), and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
  • Received Date: September 25, 2013
  • Revised Date: October 29, 2013
    Graphical Abstract
    • Abstract
  • Based on fractional order generalized thermoelasticity, one dimensional problem of a solid sphere subjected a thermal shock is studied. The transient characteristics of thermal shock is considered to derive the approximate solutions of displacement, temperature and stresses by means of the Laplace transform technique and the asymptotic properties of Bessel functions. Numerical simulation has been conducted for an isotropic solid sphere with the boundary subjected to a thermal shock. The propagation of thermal wave and thermal elastic wave, and the distribution of each physical field in the different values of the fractional order parameter are obtained. The results show that the fractional parameter has a significant effect on propagation of two waves and distribution of each physical field, which can be regarded as an influence factor of the thermal relaxation time, and can change the effect of thermal shock by constraining the influence of the delay effects on thermal behaviors.
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