Results 91 to 100 of about 2,138 (263)

A study of rupture characteristics of the 40 s subevent of the 1980 Irpinia earthquake

Annals of Geophysics, 1994
The Irpinia project, as carried out by ISMES under a commission from ENEL, had as objectives the developement of a general methodology to simulate broad-band seismic ground motion at near-source and regional distances, and the application of this ...
F. Pacor, A. Mendez
doaj   +1 more source

Anisotropic Initial Damage and Its Effect on Tensile Response of Plain Concrete

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT Damage is often described as isotropic, implying that a scalar value describes its initial state. However, the prior micro‐cracking pattern at points of an existing building, that is, the initial damage, may be oriented by a preload. The degradation of the Volume Element due to oriented preloads shall be described as anisotropic and ...
A. Fau, A. A. Basmaji, U. Nackenhorst, R. Desmorat   +3 more
wiley   +1 more source

Analysis of Rupture Directivity for the 2004 Sumatra Earthquake from the Rayleigh-Wave Phase Velocity

Terrestrial, Atmospheric and Oceanic Sciences, 2010
The rupture directivity for the 2004 Sumatra earthquake is analyzed by examining differences between the phase-de lay times of Rayleigh-waves (in the 140 - 160 sec period range) arising from the main shock and reference earth quakes.
Jo-Pan Chang, Ruey-Der Hwang, Chien-Ying Wang, Guey-Kuen Yu, Wen-Yen Chang, Tzu-Wei Lin   +5 more
doaj   +1 more source

Dynamic rupture process of the 1999 Duzce earthquake

, 2020
Büyük depremlerin neden olduğu yırtılma ve yer hareketlerinin simülasyonu işlemi genellikle kinematik bir yaklaşım kullanılarak elde edilmektedir. Kinematik yaklaşımda fayın boyu, derinliği, yırtılma hızı, kalıcı kayma miktarı ve kayma hızı zaman fonksiyonunu tanımlayan yükselme zamanı girdi parametreleri olarak kullanılmaktadır.
openaire   +1 more source

General Variational Formulation of Axisymmetric Capillary Bridges: Modeling Contact Angle Hysteresis and Capillary Forces

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This work presents a general framework for deriving the Young–Laplace equation and the Young's equations for an axisymmetric capillary bridge between two parallel plates by minimizing the system's total energy. These Young's equations naturally emerge as boundary conditions associated with the Young–Laplace equation.
Olivier Millet, Antoine Moreau, Antoine Logerot, Marc Médale   +3 more
wiley   +1 more source

The complex rupture evolution of the long and slow, tsunamigenic 2021 South Sandwich Islands earthquake

Scientific Reports
On August 21, 2021, a large earthquake occurred in the South Sandwich subduction zone, and the associated tsunami was widely observed. To robustly analyse the detailed seismic source process of this long-source duration (over 200 s) event occurring in a ...
Ryo Yamaguchi, Yuji Yagi, Ryo Okuwaki, Bogdan Enescu   +3 more
doaj   +1 more source

A Geometrically Regularized Gradient‐Damage Model With Orthogonality‐Based Energy Split for Dynamic Anisotropic Compression‐Shear Fracture

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This study proposes a novel geometrically regularized gradient‐damage model for simulating dynamic mixed‐mode fracture in orthotropic materials with tension–compression asymmetry. In this model, a thermodynamic framework is formulated by incorporating damage dissipation into internal energy evolution, from which the constitutive relation and ...
Hui Li, Shanyong Wang
wiley   +1 more source

Innovative development and structural behavior of hollow columns using inflatable molds

Structural Concrete, EarlyView.
Abstract This study introduces a novel approach for constructing hollow columns using precast (PC) methods enhanced by inflatable air tubes as internal molds. The proposed method addresses practical challenges in conventional hollow column construction, such as limited constructability, high production cost, and interference between internal molds and ...
Soo Hyung Kim, Dohak Kim, Jeongun Lee, Yun Mook Lim   +3 more
wiley   +1 more source

Assessing the fire resistance of damaged reinforced concrete frames: A comparative study between 2D and 3D frames

Structural Concrete, EarlyView.
Abstract Post‐earthquake fires pose a significant threat to urban environments, with potentially catastrophic consequences for buildings and infrastructure. To enhance understanding and mitigate these risks, this study conducts a comparative analysis of post‐earthquake fire (PEF) in two‐dimensional (2D) and three‐dimensional (3D) reinforced concrete ...
Hugo Vitorino, Paulo Vila Real, Carlos Couto, Hugo Rodrigues   +3 more
wiley   +1 more source

Performance enhancement of reinforced concrete columns using stainless steel and galvanized steel plates: Experimental and numerical investigation

Structural Concrete, EarlyView.
Abstract This study introduces an innovative approach to strengthening defected reinforced concrete (RC) columns using externally bonded stainless steel and galvanized steel plates. Unlike conventional strengthening methods, this technique replaces traditional transverse stirrups with steel sheets, providing enhanced confinement and ductility.
Ahmed Hamoda, Khaled Sennah, Ramy I. Shahin, Aref A. Abadel, Mizan Ahmed, Mohamed Ghalla   +5 more
wiley   +1 more source