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  • Open Access

    ABSTRACT

    Analytical solution for estimation of temperature-dependent material properties of metals using modified morse potential

    Kuo-Ning Chiang1, Chan-Yen Chou2, Chung-Jung Wu2, Chao-Jen Huang2, Ming-Chih Yew2

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.9, No.3, pp. 130-142, 2009, DOI:10.3970/icces.2009.009.130

    Abstract An atomic-level analytical solution, together with a modified Morse potential, has been developed to estimate temperature-dependent thermal expansion coefficients (CTE) and elastic characteristics of bulk metals. In this study, inter-atomic forces are considered as a set of anharmonic oscillator networks which can be described by Morse potential, while the material properties can be defined by these inter-atomic forces; when temperature increases, the vibration of the anharmonic oscillator causes the phenomenon of temperature-dependent material properties. The results of analysis showed that the original Morse potential can give a reasonable prediction of the thermal expansion coefficients and More >

  • Open Access

    ARTICLE

    Analytical Solution for Estimation of Temperature-Dependent Material Properties of Metals Using Modified Morse Potential

    Kuo-Ning Chiang1, Chan-Yen Chou2, Chung-Jung Wu2,Chao-Jen Huang2, Ming-Chih Yew2

    CMES-Computer Modeling in Engineering & Sciences, Vol.37, No.1, pp. 85-96, 2008, DOI:10.3970/cmes.2008.037.085

    Abstract An atomic-level analytical solution, together with a modified Morse potential, has been developed to estimate temperature-dependent thermal expansion coefficients (CTE) and elastic characteristics of bulk metals. In this study, inter-atomic forces are considered as a set of anharmonic oscillator networks which can be described by Morse potential, while the material properties can be defined by these inter-atomic forces; when temperature increases, the vibration of the anharmonic oscillator causes the phenomenon of temperature-dependent material properties. The results of analysis showed that the original Morse potential can give a reasonable prediction of the thermal expansion coefficients and More >

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