Results 21 to 30 of about 23,612,601 (294)
Diagrammatic Expansion for Positive Spectral Functions in the Steady‐State Limit [PDF]
physica status solidi (b), 2019 Recently, a method was presented for constructing self‐energies within many‐body perturbation theory that is guaranteed to produce a positive spectral function for equilibrium systems, by representing the self‐energy as a product of half‐diagrams on the forward and backward branches of the Keldysh contour [Phys. Rev. B 2014, 90, 115134]. An alternative
Karlsson, Daniel +3 more
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Electronic Excited States in Extreme Limits via Ensemble Density Functionals
Physical Review Letters, 2023 Density functional theory (DFT) has greatly expanded our ability to affordably compute and understand electronic ground states, by replacing intractable {\em ab initio} calculations by models based on paradigmatic physics from high- and low-density limits. But, a comparable treatment of excited states lags behind.
Tim Gould +3 more
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Structural Steelwork: Design to Limit State Theory
, 2014 NoThe fourth edition of Structural Steelwork: Design to Limit State Theory describes the design theory and code requirements for common structures, connections, elements, and frames. It provides a comprehensive introduction to structural steelwork design
Ang, T.C., Lam, Dennis, Chiew, S.P.
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The plastic limit of clays [PDF]
, 2013 The plastic limit of soils was first described by Atterberg in 1911. The thread-rolling test was standardised at the US Public Roads Bureau in the 1920s and 1930s, and has subsequently become one of the standard tests of soil mechanics.
Vardanega, Paul J +2 more
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Polinomial chaos expansion applied to limit state functions
Journal of Physics: Conference Series, 2021 Abstract In structural projects, ensuring system performance within the established specifications with a maximum level of safety and taking into account the economic constraints of the project is one of the main objectives of structural design.
N Afanador García +2 more
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Energies, 2022 Scour risk assessment considering reaction force at foundation was proposed and applied to newly developed pentapod suction bucket support structures for a 5.5 MW offshore wind turbine under ultimate limit state environmental load.
Young-Jin Kim +3 more
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Diffusion limits of the random walk Metropolis algorithm in high dimensions [PDF]
, 2012 Diffusion limits of MCMC methods in high dimensions provide a useful theoretical tool for studying computational complexity. In particular, they lead directly to precise estimates of the number of steps required to explore the target measure, in ...
Stuart, Andrew M. +9 more
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Estimating Failure Probability with Neural Operator Hybrid Approach
Mathematics, 2023 Evaluating failure probability for complex engineering systems is a computationally intensive task. While the Monte Carlo method is easy to implement, it converges slowly and, hence, requires numerous repeated simulations of a complex system to generate ...
Mujing Li, Yani Feng, Guanjie Wang
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A novel response surface method for structural reliability
AIP Advances, 2022 The response surface method is a common method to solve structural reliability problems. The core principle of this method is the approximation of the actual limit state function using the response surface function for subsequent analytical calculations.
Ruigang Yang, Wenzhao Li, Yuzhen Liu
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3D ultimate limit state analysis using discontinuity layout optimization [PDF]
, 2012 The recently developed discontinuity layout optimization (DLO) procedure uses limit analysis theory to directly obtain upper bounds on plane strain collapse loads of bodies and has successfully been applied to geotechnical problems.
Hawksbee, Samuel John
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