Dynamic Response Analysis

  • Ikuo Towhata
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)


Clay has a creep behavior; its deformation develops slowly with time under constant magnitude of stress. Therefore, the stress-strain curve of clay varies with the rate of loading. When loaded faster, clay reveals greater modulus and higher strength. These observation suggests that clay is a viscous material.

On the other hand, the stress-strain-strength characteristics of clay is controlled by a grain-to-grain friction and chemical bonding as well as electric interaction. The magnitude of these forces are not much dependent of the rate of loading. Consequently, the stress-strain behavior of clay is partially rate-dependent but partially rate-independent.


Rock Outcrop Excess Pore Water Pressure Acceleration Time History Impedance Ratio Dynamic Response Analysis 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Ikuo Towhata
    • 1
  1. 1.University of TokyoJapan

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