Non-linear response of a layered medium

The response of a soil medium with a stiff and elastic layer on the top can be captured in a model introduced by Iwan using a calculation procedure introduced by Joyner and Chen. The problem analyzed here is basically the response of horizontal soil layers bounded below by a semi-infinite elastic medium and above by an elastic layer. The medium is shaken by a ground motion assumed to originate at the top of the semi-infinite elastic medium. The aim of the study is to investigate the nonlinear soil-structure interaction problem by considering true nonlinear behavior of the soil under seismic excitations.


Processing forced vibration test records of structural systems using the analytic signal
Çelik, Ozan Cem (SAGE Publications, 2020-09-01)
This article presents the use of the analytic signal procedure for processing the large volume of structural vibration data recorded in forced vibration tests. The analytic signal facilitates the computationally laborious task of extracting the steady-state amplitude for each response measure of interest from the recorded accelerations throughout the building at each operated frequency of the forced vibration source. The implementation of the signal processing procedure introduced here is illustrated in der...
Interactions at fiber/matrix interface in short fiber reinforced amorphous thermoplastic composites modified with micro- and nano-fillers
Isitman, Nihat Ali; Aykol, Muratahan; Kaynak, Cevdet (Springer Science and Business Media LLC, 2012-01-01)
This study aims at systematically extracting fiber/matrix interfacial strength in short-glass fiber-reinforced polymer composites using an experimental micromechanics approach which employs mechanical properties and residual fiber length distributions to derive the apparent interfacial shear strength. We started from neat high-impact polystyrene matrix short-glass fiber-reinforced composites (HIPS/GF) with varying fiber loading and proceeded toward HIPS/GF hybrid composites containing micro- and nano-filler...
Static and free vibration analyses of small-scale functionally graded beams possessing a variable length scale parameter using different beam theories
Aghazadeh, Reza; Ciğeroğlu, Ender; Dağ, Serkan (Elsevier BV, 2014-07-01)
This article puts forward a modified couple stress theory based approach of analysis for small-scale functionally graded beams, that possess a variable length scale parameter. Presented procedures are capable of predicting static and dynamic beam responses according to three different beam theories, namely: Euler - Bernoulli beam theory, Timoshenko beam theory and third-order shear deformation beam theory. A variational method is used in conjunction with the modified couple stress theory to derive the gover...
Edge cracks in a transversely isotropic hollow cylinder
Kadıoğlu, Fevzi Suat (Elsevier BV, 2005-09-01)
The analytical solution for the linear elastic, axisymmetric problem of inner and outer edge cracks in a transversely isotropic infinitely long hollow cylinder is considered. The z = 0 plane on which the crack lies is a plane of symmetry. The loading is uniform crack surface pressure. The mixed boundary value problem is reduced to a singular integral equation where the unknown is the derivative of the crack surface displacement. An asymptotic analysis is done to derive the generalized Cauchy kernel associat...
ELMEZAINI, N; CITIPITIOGLU, E (American Society of Civil Engineers (ASCE), 1991-10-01)
A practical and powerful technique for the discrete representation of reinforcement in finite element analysis of prestressed and reinforced concrete structures is presented. Isoparametric quadratic and cubic finite elements with movable nodes are developed utilizing a correction technique for mapping distortion. Reinforcing bars and/or prestressing tendons are modeled independently of the concrete mesh. Perfect or no bond as well as any bond-slip model can easily be represented. The procedure is succes...
Citation Formats
M. Z. Aşık, “Non-linear response of a layered medium,” JOURNAL OF VIBRATION AND CONTROL, pp. 1313–1320, 2007, Accessed: 00, 2020. [Online]. Available: