【作者】 周凤玺； 赵王刚； 米海珍；

【Author】 ZHOU Feng-xi , ZHAO Wang-gang , MI Hai-zhen (School of Civil Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China)

【机构】 兰州理工大学土木工程学院；

【摘要】 基于不可压多孔介质理论,采用Kirchhoff假定,建立了孔隙流体沿轴向扩散的情形下,弹性地基上含液饱和多孔弹性梁横向弯曲的数学模型。利Laplace积分变换研究了两端简支多孔弹性梁的弯曲振动特性。通过数值算例,考察了端部透水条件、弹性基床系数和流-固耦合系数对多孔弹性梁瞬态振动的影响规律。更多还原

【Abstract】 Based on the theory of porous media, using the hypothesis of Kirchhoff,a mathematical model for dynamic bending of incompressible saturated poroelastic beams on elastic foundation with axial direction diffusion is established.The vibration responses of an incompressible saturated poroelastic beam with at two ends are investigated by the Laplace transmition.The effect of foundation’s elastic coefficient and fluid-solid coupling coefficient on vibration properties of saturated poroelastic beam with permeable or impermeable ends is investigated through numerical example.更多还原