Abstract
The dynamic stability of simple supported viscoelastic column, subjected to a periodic axial force, is investigated. The viscoelastic material was assumed to obey the fractional derivative constitutive relation. The governing equation of motion was derived as a weakly singular Volterra integro-partial-differential equation, and it was simplified into a weakly singular Volterra integro-ordinary-differential equation by the Galerkin method. In terms of the averaging method, the dynamical stability was analyzed. A new numerical method is proposed to avoid storing all history data. Numerical examples are presented and the numerical results agree with the analytical ones.
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Paper from CHENG Chang-jun, Member of Editorial Committee, AMM
Foundation item: the National Natural Science Foundation of China (19772027); the Science Foundation of Shanghai Municipal Commission of Sciences and Technology (98JC14032); the Science Foundation of Shanghai Municipal Commission of Education (99A01)
Biographies: LI Gen-guo (1969-) ZHU Zheng-you (1937-)
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Gen-guo, L., Zheng-you, Z. & Chang-jun, C. Dynamical stability of viscoelastic column with fractional derivative constitutive relation. Appl Math Mech 22, 294–303 (2001). https://doi.org/10.1007/BF02437967
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DOI: https://doi.org/10.1007/BF02437967
Key words
- viscoelastic column
- fractional derivative constitutive relation
- averaging method
- weakly singular Volterra integro-differential equation
- dynamical stability