Machine stiffness appropriate for experimental simulation of earthquake processes

Masayuki Kikuchi, Karen McNally, Bernard R. Tittmann

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Loading machine stiffness is considered in an attempt to simulate strain accumulation processes prior to failure in earthquakes. We impose the similarity condition that the inelastic deformation in a test specimen relative to the loading machine corresponds with that in a spherical seismic region relative to the surrounding earth. From this constraint the appropriate ratio between the stiffnesses of machine and specimen is determined to be 1.5 ∼ 2.3. Preliminary experiments were carried out for sandstone samples. A qualitative difference between acoustic emission sequences was observed depending on whether the conditions were similar or dissimilar to the earth based on the scaling assumption. In the former case, a subsidence in acoustic emission activity prior to the main fractures was clearly and systematically observed.

Original languageEnglish (US)
Pages (from-to)321-323
Number of pages3
JournalGeophysical Research Letters
Issue number4
StatePublished - Apr 1981

All Science Journal Classification (ASJC) codes

  • Geophysics
  • General Earth and Planetary Sciences


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