| ON THE STABILITY OF ANISOTROPIC VISCOELASTIC THIN PLATES |
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| 作者姓名： | Sun Yuanxiang Ma Hezhong Gao Zhentong |
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| 作者单位： | Research Institute of Solid Mechanics，Beijing University ofAeronautics and Astronautics，Beijing，China，100083 |
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| 摘 要： | Uptonow,someanalyses'~'Jhavebeendoneoncreepbucklingofviscoelasticstruc-tures.However,nomethodhaseverbeengiventodeterminethedurablecriticalloadofvis-coelasticstructuressubjectedtoadurableload.OnlyTroyanovskii'jsubmittedamethodtode-terminethedurablecriticalloadofisotropicviscoelasticthinplatesbutgavenoexample.Thededucingandcalculatingmethodinthispapercanbeusedtoresolvethecreepbucklingques-tionsofotheranisotropicviscoelasticplatesandshells.lAnalysisThecreepbucklingofanorthotropicviscoelastict…
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ON THE STABILITY OF ANISOTROPIC VISCOELASTIC THIN PLATES |
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| Sun Yuanxiang, Ma Hezhong, Gao Zhentong.ON THE STABILITY OF ANISOTROPIC VISCOELASTIC THIN PLATES[J].Chinese Journal of Aeronautics,1997(1). |
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| Authors: | Sun Yuanxiang Ma Hezhong Gao Zhentong |
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| Abstract: | A creep buckling analysis of orthotropic viscoelastic thin plates,simply-supported all around, is given. In order to simulate the real condi-tions, the relaxation time of modulus in different pripeipal material orienta-tions is arbitrary in the constitutive equations of the plates. In deriving the as-sociated governing equations, transverse shear deformations are incorporated-By means of theoretical analysis, the instantaneous critical load and durablecriticaI load are obtained. In the example, a time incremental method is usedfor the first time to calculate the creep deformation of the viscoelastic plateswith initial imperfection, subjected to a constant compressive load for a longtime. |
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| Keywords: | orthotropic plates viscoelasticity creep buckling critical loading |
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