Results 31 to 40 of about 15,910 (229)

A constitutive model for unsaturated cemented soils under cyclic loading [PDF]

, 2008
On the basis of plastic bounding surface model, the damage theory for structured soils and unsaturated soil mechanics, an elastoplastic model for unsaturated loessic soils under cyclic loading has been elaborated.
Alonso, Baudet, C. Yang, Carol, Chai, Cui, Cui, Dafalias, Delage, Grabowska-Olszewska, J.M. Pereira, Leroueil, M.S. Huang, Osipov, Pastor, Pereira, Sharma, Sharma, van Genuchten, Wheeler, Wheeler, Y.J. Cui, Zienkiewicz   +22 more
core   +5 more sources

Energy Evolution and Fractal Characteristics of Sandstones Under True Triaxial Cyclic Loading and Unloading

Fractal and Fractional
To study the fractal characteristics and energy evolution of sandstones under true three-dimensional stress states, a true triaxial compression test and a cyclic loading and unloading test of sandstone specimens under different loads were carried out ...
Qihang Zhang, Xiangrui Meng, Guangming Zhao   +2 more
doaj   +1 more source

Experimental study on the cyclic resistance of a natural loess from Northern France [PDF]

, 2009
In order to analyze the instability phenomenon observed along the Northern High Speed Line of R\'eseau Ferr\'e de France (RFF), soil blocks were taken at a site near the railway, at four different depths (1.2, 2.2, 3.5 and 4.9 m).
Cui, Yu-Jun, Karam, Jean-Paul, Marchadier, Gilles, Tang, Anh-Minh, Terpereau, Jean-Marc   +4 more
core   +4 more sources

Predicting resilient modulus: A data driven approach integrating physical and numerical techniques

Heliyon
Resilient modulus (MR) is an important parameter in the design of pavement that helps to characterize the quality of sub-grade materials. Generally, it is not determined experimentally due to time consuming, uneconomical, laborious and lack of advanced ...
Kashif Riaz, Naveed Ahmad
doaj   +1 more source

Energy evolution and damage analysis of true triaxial cyclic loading and unloading of sandstone at different rates

Meitan xuebao
To investigate the effects of different rates on the energy and damage evolution of sandstone during true triaxial cyclic loading and unloading damage, the true triaxial compression test, true triaxial primary loading and unloading test, and true ...
Qihang ZHANG, Xiangrui MENG, Guangming ZHAO, Wensong XU, Chongyan LIU, Zhixi LIU, Xukun WU, Minjie QI   +7 more
doaj   +1 more source

Some contributions to mechanical behaviors of lacustrine deposit in Bogotá, Colombia

Journal of Rock Mechanics and Geotechnical Engineering, 2019
This paper presents the mechanical behaviors of the lacustrine deposit, a representative soil in Bogotá, Colombia. Initially, the physical characterization of the deposit is performed via laboratory tests (grain size distribution, scanning electron ...
Bernardo Caicedo, Cristhian Mendoza, Arcesio Lizcano, Fernando Lopez-Caballero   +3 more
doaj   +1 more source

Macroscopic model with anisotropy based on micro-macro informations [PDF]

, 2014
Physical experiments can characterize the elastic response of granular materials in terms of macroscopic state-variables, namely volume (packing) fraction and stress, while the microstructure is not accessible and thus neglected.
Kumar, Nishant, Luding, Stefan, Magnanimo, Vanessa   +2 more
core   +5 more sources

Calibration of an elastoplastic model of sand liquefaction using the swarm intelligence with a multi-objective function

Journal of Rock Mechanics and Geotechnical Engineering, 2023
According to post-seismic observations, spectacular examples of engineering failures can be ascribed to the occurrence of sand liquefaction, where a sandy soil stratum could undergo a transient loss of shear strength and even behave as a “liquid ...
Qiutong Li, Zhehao Zhu
doaj   +1 more source

Experimental study of strain accumulation of silica sand in a cyclic triaxial test [PDF]

, 2014
The experimental and phenomenological investigation of the elasto-plastic long-term behaviour of soils under dynamic loading is important for the development of risk analysis tools and numerical accumulation models for settlement prediction.
Benoot, Jelle, Degrande, Geert, Haegeman, Wim   +2 more
core  

Smart Catheters for Diagnosis, Monitoring, and Therapy

Advanced Healthcare Materials, EarlyView.
This study presents a comprehensive review of smart catheters, an emerging class of medical devices that integrate embedded sensors, robotics, and communication systems, offering increased functionality and complexity to enable real‐time health monitoring, diagnostics, and treatment. Abstract This review explores smart catheters as an emerging class of
Azra Yaprak Tarman, Samiha Ahmed, Majed Othman Althumayri, Megan Guy, Darlenne Chavez Lugo, Frances S. Ligler, George T. Ligler, Rahmi Oklu, Hiroshi Kawahira, Michael J. McShane, Jun Kameoka, Jonathan Bova, Hatice Ceylan Koydemir   +12 more
wiley   +1 more source