TWO-SURFACE VISCOPLASTIC SAND MODEL FOR DISASTER MITIGATION (C2020.pdf) Higgins, William Primary Author mixed material bibliography World Scientific 2011 id Indonesia
Computer Software
pp. 416-422 Geotechnical Engineering For Disaster Mitigation And Rehabilitation And Highway Engineering 2011 Geotechnical And Highway Engineering — Practical Applications, Challenges And Opportunities (with Cd- Natural disasters like landslide, mudflow and debris flow often cause catastrophic failures in civil infrastructure and may give rise to high rates of strain (102-104/sec) in soil. Rate of induced strain (or stress) plays a significant effect on the strength and stiffness of soil. In this paper, we investigate the high strain-rate behavior of sand by developing a rate-dependent, multi-axial, viscoplastic two-surface constitutive model. The model is based on the concepts of critical-state soil mechanics. Perzyna’s overstress theory is incorporated in this model to reproduce viscoplastic behavior of sand under high loading rate. Nonassociated flow rule is considered. The rate-dependent model parameters are determined from experimental data of split Hopkinson pressure bar test under high rate loading. Model performance is demonstrated for different sands. SAND 624.13 Perpustakaan Direktorat Bina Teknik Jalan dan Jembatan Direktorat Jenderal Bina Marga - Kementerian Pekerjaan Umum (NPP: 3273244A00000001) 0000020963 My Library 20269 machine generated