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Influence of constitutive model on numerical simulation of EPS seismic buffer shaking table tests
The paper describes two constitutive models for the simulation of expanded polystyrene (EPS) seismic buffer shaking table tests previously reported by the writers. The first model is linear elastic-plastic with Mohr-Coulomb criterion and Rayleigh damping. The second is called the equivalent-linear method (ELM) which incorporates hysteretic load-unload cycles using Masing-type functions and straindependent shear modulus and damping ratio functions. The constitutive models were applied to both the geofoam buffer and sand backfill in both approaches. Both models are shown to capture qualitative features of measured peak load-time response of the physical tests. The advanced ELM model gave predictions that were closer to the measured results for the seismic buffer test with the most compressible EPS when model accelerations and total wall forces were greatest. However, the simpler model is judged to be sufficiently accurate for practical purposes when the dynamic force increment is considered only.
Influence of constitutive model on numerical simulation of EPS seismic buffer shaking table tests
The paper describes two constitutive models for the simulation of expanded polystyrene (EPS) seismic buffer shaking table tests previously reported by the writers. The first model is linear elastic-plastic with Mohr-Coulomb criterion and Rayleigh damping. The second is called the equivalent-linear method (ELM) which incorporates hysteretic load-unload cycles using Masing-type functions and straindependent shear modulus and damping ratio functions. The constitutive models were applied to both the geofoam buffer and sand backfill in both approaches. Both models are shown to capture qualitative features of measured peak load-time response of the physical tests. The advanced ELM model gave predictions that were closer to the measured results for the seismic buffer test with the most compressible EPS when model accelerations and total wall forces were greatest. However, the simpler model is judged to be sufficiently accurate for practical purposes when the dynamic force increment is considered only.
Influence of constitutive model on numerical simulation of EPS seismic buffer shaking table tests
Einfluss des konstitutiven Modells auf die numerische Simulation von seismischen Schütteltisch-Tests mit Polystyrolschaum-Dämpfungselementen
Zarnani, Saman (author) / Bathurst, Richard J. (author)
Geotextiles and Geomembranes ; 27 ; 308-312
2009
5 Seiten, 5 Bilder, 13 Quellen
Article (Journal)
English
Influence of constitutive model on numerical simulation of EPS seismic buffer shaking table tests
| Online Contents | 2009
Influence of constitutive model on numerical simulation of EPS seismic buffer shaking table tests
| Online Contents | 2009
Numerical modeling of EPS seismic buffer shaking table tests
| Online Contents | 2008
Numerical modeling of EPS seismic buffer shaking table tests
| Tema Archive | 2008
Numerical modeling of EPS seismic buffer shaking table tests
| Online Contents | 2008