Results 21 to 30 of about 8,550 (257)

Yielding and Flow Liquefaction of Loose Sand

Soils and Foundations, 2002
Abstract: The relationship between the shapes of the yield surface and the undrained effective stress path (UESP) of loose sand is investigated for triaxial loading conditions. It is shown that the UESP can be used in the construction of capped yield surfaces for sands.
Chan, D. H., Morgenstern, N. R., Robertson, P. K., Imam, S. M. R.   +3 more
openaire   +3 more sources

Numerical Simulation as Laboratory Liquefaction Test Comparison for Geological Hazard Countermeasure: A Preliminary Study [PDF]

BIO Web of Conferences
Liquefaction is a secondary hazard due to earthquakes, which is one of the geological hazards. The impairment caused can damage infrastructure on a wide scale and even cause casualties. Several phenomenal liquefaction events have been recorded throughout
Jaya Syahbana Arifan, Yelvi Yelvi, Tohari Adrin, Wahid Santoso Prastika   +3 more
doaj   +1 more source

Effect of Anisotropic Yielding on the Flow Liquefaction of Loose Sand

Soils and Foundations, 2002
Abstract: In very loose sand, the ratio M-p of shear stress to mean normal stress at the peak point of the undrained effective stress path (UESP) is very close to the stress ratio M at the peak point of the capped yield surface. Stress ratios M-p can therefore be used in constructing yield surfaces of sands.
Morgenstern, N. R., Robertson, P. K., Imam, S. M. R., Chan, D. H.   +3 more
openaire   +3 more sources

Numerical study of seabed response and liquefaction around a jacket support offshore wind turbine foundation under combined wave and current loading

Water Science and Engineering, 2022
The seabed instability induced by the transient liquefaction when exposed to wave-current may threaten the safety of offshore structures. In this study, the Reynolds-averaged Navier–Stokes (RANS) equations with the k–ε turbulence model were used to ...
Shu-xin Wei, Zuo-dong Liang, Lin Cui, Hua-ling Zhai, Dong-sheng Jeng   +4 more
doaj   +1 more source

Unified analysis of liquefaction and the ground flow phenomenon [PDF]

International Applied Mechanics, 2007
Loose saturated sand behaves as a solid before liquefaction but as a fluid when the excess pore water pressure equals the initial confining stress, after which it recovers its strength. A simple constitutive equation for loose saturated sand was developed to express the phase transformation between a solid and fluid during liquefaction and the ground ...
Tae-Hoon Kim, Yong-Seong Kim
openaire   +1 more source

Numerical characterization of under-expanded cryogenic hydrogen gas jets

AIP Advances, 2020
High-resolution direct numerical simulations are conducted for under-expanded cryogenic hydrogen gas jets to characterize the nearfield flow physics. The basic flow features and jet dynamics are analyzed in detail, revealing the existence of four stages ...
Zhaoxin Ren, Jennifer X. Wen
doaj   +1 more source

Thermal Efficiency and Economics of a Boil-Off Hydrogen Re-Liquefaction System Considering the Energy Efficiency Design Index for Liquid Hydrogen Carriers

Energies, 2021
This study analyzes the thermodynamic, economic, and regulatory aspects of boil-off hydrogen (BOH) in liquid hydrogen (LH2) carriers that can be re-liquefied using a proposed re-liquefaction system or used as fuel in a fuel cell stack.
Minsoo Choi, Wongwan Jung, Sanghyuk Lee, Taehwan Joung, Daejun Chang   +4 more
doaj   +1 more source

Engineering geologic assessment of the slope movements and liquefaction failures of the 23 October 2011 Van earthquake (M_w= 7.2) [PDF]

Natural Hazards and Earth System Sciences, 2013
On 23 October 2011, a Mw = 7.2 earthquake occurred in the Van Province in eastern Turkey, killing 604 people. The earthquake was triggered by a thrust fault due to a compression stress in the region, and caused extensive damage over a large area.
A. Karakaş, Ö. Coruk, B. Doğan
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Cyclic Triaxial Testing: A Primer

J
Cyclic triaxial tests are frequently used in the laboratory to assess the liquefaction susceptibility of soils. This paper will serve a two-fold purpose: First, it will serve to explain how the mechanics of the tests represent the stresses that occur in ...
Carmine Polito
doaj   +1 more source