A FORTRAN program for calculating nonlinear seismic ground response
Open-File Report
77-671
By: William B. Joyner
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Abstract
The program described here was designed for calculating the nonlinear seismic response of a system of horizontal soil layers underlain by a semi-infinite elastic medium representing bedrock. Excitation is a vertically incident shear wave in the underlying medium. The nonlinear hysteretic behavior of the soil is represented by a model consisting of simple linear springs and Coulomb friction elements arranged as shown. A boundary condition is used which takes account of finite rigidity in the elastic substratum. The computations are performed by an explicit finite-difference scheme that proceeds step by step in space and time. A brief program description is provided here with instructions for preparing the input and a source listing. A more detailed discussion of the method is presented elsewhere as is the description of a different program employing implicit integration.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | A FORTRAN program for calculating nonlinear seismic ground response |
| Series title | Open-File Report |
| Series number | 77-671 |
| DOI | 10.3133/ofr77671 |
| Year Published | 1977 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | Reston, VA |
| Contributing office(s) | Earthquake Science Center, Menlo Park Science Center |
| Description | 16 p.; Figures; Appendices |
| Online Only (Y/N) | Y |
| Google Analytic Metrics | Metrics page |