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您的检索式：作者名="SPANOS Pol D"
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| 1 | Damage evolution and dynamic response of cement asphalt mortar layer of slab track under vehicle dynamic load显示文摘The damage evolution and dynamic performance of a cement asphalt(CA)mortar layer of slab track subjected to vehicle dynamic load is investigated in this paper.Initially,a statistical damage constitutive model for the CA mortar layer is developed using continuous damage mechanics and probability theory.In this model,the strength of the CA mortar elements is treated as a random variable,which follows the Weibull distribution.The inclusion of strain rate dependence affords considering its influence on the damage development and the transition between viscosity and elasticity.Comparisons with experimental data support the reliability of the model.A three-dimensional finite element(FE)model of a slab track is then created with the commercial software ABAQUS,where the devised model for the CA mortar is implemented as a user-defined material subroutine.Finally,a vertical vehicle model is coupled with the FE model of the slab track,through the wheel-rail contact forces,based on the nonlinear Hertzian contact theory.The evolution of the damage and of the dynamic performance of the CA mortar layer with various initial damage is investigated under the train and track interaction.The analysis indicates that the proposed model is capable of predicting the damage evolution of the CA mortar layer exposed to vehicle dynamic load.The dynamic compressive strain,the strain rate,and the induced damage increase significantly with an increase in the initial damage,whereas the dynamic compressive stress exhibits a sharp decrease with the increasing initial damage.Also,it is found that the strain rate dependence significantly influences the damage evolution and the dynamic behavior of the CA mortar layer. | ZHU ShengYang FU Qiang CAI ChengBiao SPANOS Pol D | 2014 | Science China(Technological Sciences)2014，57，10： | 19 |
| 2 | Coupled analysis of a spar structrue: monte carlo and statistical linearization solutions 显示文摘 | Pol D Spanos Rupak Ghosh Lyle D Finn John Halkyard | 2005 | Journal of Offshore Mechanics and Arctic Engineering2005，127，： | 1 |
| 3 | A nonlinear and fractional derivative viscoelastic model for rail pads in the dynamic analysis of coupled vehicle-slab track systems显示文摘 | Zhu Shengyang Cai Chengbiao Spanos Pol D | 2015 | Journal of Sound and Vibration2015，335，1： | 1 |
| 4 | Coupled analysis of a spar structure:Monte Carlo and statistical linearization solutions显示文摘 | Spanos Pol D Ghosh Rupak Finn Lyle D | 2005 | Journal of Offshore Mechanics and Arctic Engineering2005，127，1： | 1 |
| 5 | Deterministic and stochastic analyses of a nonlinear system with a Biot visco-elastic element显示文摘 | Pol D Spanos Spyro Tsavachidis | 2001 | J Earthquake Engng Struct Dyn2001，30，： | 1 |
| 6 | Spectral approach to equivalent statistical quadratization and cubicization methods for nonlinear oscillators显示文摘 | Spanos Pol D Failla Giuseppe Paola Mario Di | 2003 | Journal of Engineering Mechanics2003，129，1： | 1 |
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