Results 101 to 110 of about 15,853 (251)

CYCLIC STRENGTHS OF CLAY AND SAND BY STRAIN RATE CONTROLLED CYCLIC TRIAXIAL TEST

Doboku Gakkai Ronbunshu, 1995
本研究は, 土の載荷速度依存性に着目して, 飽和粘土を主対象に定ひずみ速度繰返し三軸圧縮試験を行い, 従来の応力制御式による繰返し三軸試験結果と比較検討を行ったものである. また, ゆるい飽和砂とまさ土についても同様の検討を行った. その結果, 定ひずみ速度繰返し三軸試験による実験結果は, 特に粘土やひずみ軟化挙動を起こすような緩い砂, あるいは破砕性土であるまさ土などにおいて応力制御試験によるよりも安定した挙動となることが明らかとなった. さらに, 定ひずみ速度繰返し試験により, 粘土の繰返し強度特性におよぼすひずみ速度の影響について調べた.
Masayuki Hyodo, Keizo Shinomiya, Noriyuki Yasufuku, Hidekazu Murata   +3 more
openaire   +2 more sources

On a damage-plasticity approach to model concrete failure

, 2009
A damage-plasticity constitutive model for the description of fracture in plain concrete is presented. Two approaches, the local model comprising the adjustment of the softening modulus and the nonlocal model based on spatial averaging of history ...
Grassl, Peter
core   +1 more source

Toward an idiographic understanding of the role of sleep‐mood dynamics in adolescents' internalizing symptoms

JCPP Advances, EarlyView.
Abstract Background Adolescence is marked by increased vulnerability to sleep disturbances and mood disorders. Understanding how day‐to‐day changes in sleep and mood are linked within the same individual is crucial for clarifying sleep's role in emerging internalizing disorders. However, the extent to which an adolescent's fluctuations in sleep predict
Konstantin Drexl, Setareh Ranjbar, Sébastien Urben, Kerstin Jessica Plessen, Jennifer Glaus   +4 more
wiley   +1 more source

Effects of grain size distribution on the initial strain shear modulus of calcareous sand [PDF]

, 2015
The soil’s small strain shear modulus, Gmax or G0, is applied in dynamic behavior analyses and is correlated to other soil properties (density and void ratio) for predicting soil dynamic behavior under seismic loadings such as earthquakes, machinery or ...
Haegeman, Wim, Mengé, P, Pham, Huu Ha Giang, Van Impe, PO, Van Impe, William   +4 more
core   +1 more source

A Peridynamic Framework for Modeling Progressive Failure in Porous Sandstone Indentation

International Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT A state‐based peridynamic model is proposed to simulate the failure mechanisms in porous rocks, using Bentheim sandstone as a specific example. Experimental observations reveal a transition from brittle to ductile failure under increasing triaxial compression. This behavior is attributed to pore compaction. The peridynamic model is enhanced to
Sahir N. Butt, Jörg Renner, Günther Meschke   +2 more
wiley   +1 more source

Water‐Borne Erosion of Reinforced Polymer Composites: Application to Shallow Offshore Marine Environment

Polymer Composites, EarlyView.
Comparison of experimental and model‐predicted erosion rates for carbon fibre‐reinforced polymer (CFRP) and glass fibre‐reinforced polymer (GFRP) under low‐velocity (2 m/s) and at varying angles and sand concentrations (0.0, 0.05, 0.4 g/L). The results demonstrate good agreement between experimental data and model predictions across different erosive ...
Ali Al‐Darraji, Christopher Lagat, Thaneshan Sapanathan, Peter Butt, Ibukun Oluwoye   +4 more
wiley   +1 more source

The Dynamic Response of Unsaturated Clean Sand at a Very Low Frequency

International Journal of Technology, 2016
A series of cyclic triaxial tests at very low frequency was carried out on unsaturated clean sand in order to quantitatively investigate the influence of the degree of saturation on dynamic response. The conventional triaxial testing apparatus, which
Rini Kusumawardani, Kabul Basah Suryolelono, Bambang Suhendro, Ahmad Rifa’i   +3 more
doaj   +1 more source

Responsive liquid metal materials towards unstructured environment

Responsive Materials, EarlyView.
Room‐temperature liquid metals integrate conductivity, deformability, and interfacial dynamics, enabling robust performance in unstructured environments. This review highlights key properties, requirements, and applications across in vivo, underwater, natural, space, and radiation settings, with advances in sensing, actuation, thermal regulation, and ...
Bo Yuan, Huaitong Song, Kaiyuan Xiang, Shili Tang, Cailin Liu, Hongzhang Wang   +5 more
wiley   +1 more source

Flexural performance of concrete‐filled steel tubular beams with wood chip aggregate

Structural Concrete, EarlyView.
Abstract This study investigates the flexural performance of concrete‐filled steel tubular (CFST) beams with partial replacement of aggregates by wood chips (0%–25%) through experimental and numerical analysis. This study is novel in that it experimentally and numerically investigates the flexural behavior of CFST beams with partial replacement of ...
Mizan Ahmed, Mohamed Emara, Vipulkumar Ishvarbhai Patel, Wensu Chen, Xihong Zhang, Faiz Shaikh, Ahmed Hamoda   +6 more
wiley   +1 more source

Using programmable infusion pump in avian species – a validation methodology in geese

Wildlife Biology, EarlyView.
Wildlife face anthropogenic and natural stressors that affect their physiology and behaviour. The activity of the hypothalamic–pituitary–adrenal axis and glucocorticoid (GC) production is intrinsically linked with energy regulation and environmental stressors.
Myriam Trottier‐Paquet, Maude Gauthier‐Bouchard, Akiko Kato, Charline Parenteau, Frédéric Angelier, Pierre Legagneux   +5 more
wiley   +1 more source