Elastic layers bonded to flexible reinforcements

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:45

Article

Pinarbasi, Seval¹  Mengi, Yalcin² 

[1] Middle E Tech Univ, Dept Civil Engn, TR-06531 Ankara, Turkey

[2] Middle E Tech Univ, Dept Engn Sci, TR-06531 Ankara, Turkey

关键词: bonded elastic layer;    flexible reinforcement;    compression;    bending;    warping;    shape factor;    Poisson's ratio;    Galerkin method;    rubber;    elastomeric bearing;    seismic isolation;   

DOI  :  10.1016/j.ijsolstr.2007.08.029

来源: Elsevier

【 摘 要 】

Elastic layers bonded to reinforcing sheets are widely used in many engineering applications. While in most of the earlier applications, these layers are reinforced using steel plates, recent studies propose to replace rigid steel reinforcement with flexible fiber reinforcement to reduce both the cost and weight of the units/systems. In this study, a new formulation is presented for the analysis of elastic layers bonded to flexible reinforcements under (i) uniform compression, (ii) pure bending and (iii) pure warping. This new formulation has some distinct advantages over the others in literature. Since the displacement boundary conditions are included in the formulation, there is no need to start the formulation with some assumptions (other than those imposed by the order of the theory) on stress and/or displacement distributions in the layer or with some limitations on geometrical and material properties. Thus, the solutions derived from this formulation are valid not only for thin layers of strictly or nearly incompressible materials but also for thick layers and/or compressible materials. After presenting the formulation in its most general form, with regard to the order of the theory and shape of the layer, its applications are demonstrated by solving the governing equations for bonded layers of infinite-strip shape using zeroth and/or first order theory. For each deformation mode, closed-form expressions are obtained for displacement/stress distributions and effective layer modulus. The effects of three key parameters: (i) shape factor of the layer, (ii) Poisson's ratio of the layer material and (iii) extensibility of the reinforcing sheets, on the layer behavior are also studied. (c) 2007 Elsevier Ltd. All rights reserved.

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