Results 1 to 10 of about 3,306,443 (202)

Experimental study of surface cracks [PDF]

, 1972
Analysis of plastic zones surrounding surface cracks in stressed steel and titanium plates subjected to tensile loading shows that back surface dimpling develops at stress levels considerably lower than those predicted by theoretical models of yield zone

core   +1 more source

Analysis of plastic zones in surrounding rocks around a circular tunnel considering the effect of intermediate principal stress and heterogeneity [PDF]

MATEC Web of Conferences, 2019
Based on a modified Mohr-Coulomb criterion with a non-uniform coefficient, a calculation method of plastic zone boundary of surrounding rocks in a circular tunnel in non-uniform stress field is established.
Deng Shuxin, Zheng Yonglai, Feng Lipo, Tuan Le Van, Yue Cuizhou, Wu Zhuorui   +5 more
doaj   +1 more source

Investigation of High-Temperature Constitutive Behavior of Ti555211 Titanium Alloy Subjected to Plastic Deformation in the Different Phase Regions

Metals, 2022
Ti555211 titanium alloy is subjected to plastic deformation in the dual-phase (α + β phase) zone and single-phase (β phase) zone at various deformation temperatures and strain rates.
Yushe Gao, Xiangyi Xue, Huixian Gao, Wenzhong Luo, Kaixuan Wang, Shaoqiang Li, Xianghong Liu, Yuxuan Du   +7 more
doaj   +1 more source

The Influence of Rock Thermal Stress on the Morphology and Expansion Pattern of the Plastic Zone in the Surrounding Rock of a Deep-Buried Tunnel under High Geothermal Temperature Conditions

Applied Sciences
The extent of the plastic zone is critical in determining the stability and extent of damage to the surrounding rock in tunnels, crucial for designing support structures and thermal insulation layers.
Yucong Yin, Haibo Jiang, Jun Zhang, Gongda Lu, Qinglin Li   +4 more
doaj   +1 more source

Cohesive zone models in history dependent materials [PDF]

, 2013
Copyright @ 2013 ACMECohesive zone model is a well known concept in nonlinear fracture mechanics of elasto-plastic materials. In contrast to that, we discuss a development of the cohesive zone model to linear, but time and history dependent, materials ...
Hakim, L, Mikhailov, SE
core   +1 more source

Morris Water Maze Learning in Two Rat Strains Increases the Expression of the Polysialylated Form of the Neural Cell Adhesion Molecule in the Dentate Gyrus But Has No Effect on Hippocampal Neurogenesis [PDF]

, 2005
In the current study, the authors investigated whether Morris water maze learning induces alterations in hippocampal neurogenesis or neural cell adhesion molecule (NCAM) polysialylation in the dentate gyrus.
Borght, Karin van der,, Eggen, Bart J.L.,, Luiten, Paul G.M.,, Wallinga, Alinde E.,, Zee, Eddy A. van der,   +4 more
core   +3 more sources

Shear-transformation-zone theory of plastic deformation near the glass transition

, 2007
The shear-transformation-zone (STZ) theory of plastic deformation in glass-forming materials is reformulated in light of recent progress in understanding the roles played the effective disorder temperature and entropy flow in nonequilibrium situations. A
F. Spaepen, J. S. Langer, J. S. Langer, R. A. Bagnold   +3 more
core   +1 more source

The Change in the Shape Characteristics of the Plastic Zone in the Surrounding Rock of an Auxiliary Retracement Channel and a Reasonable Channel Spacing Determination Method

Applied Sciences, 2023
In underground coal mines, the stability of the retracement channel in the surrounding rock is crucial for the safe and efficient retracement of the equipment and to guarantee the continuity of the retracement work.
Xu Gao, Chenyi Liu, Hongkai Zhang, Kunlin Yang, Yingjie Hu, Xiaofei Guo   +5 more
doaj   +1 more source

Athermal Shear-Transformation-Zone Theory of Amorphous Plastic Deformation I: Basic Principles

, 2006
We develop an athermal version of the shear-transformation-zone (STZ) theory of amorphous plasticity in materials where thermal activation of irreversible molecular rearrangements is negligible or nonexistent.
A. Mehta, Eran Bouchbinder, F. Spaepen, Itamar Procaccia, J. S. Langer   +4 more
core   +1 more source

CAA-derived IL-6 promoted the PD-L1 expression of breast cancer via STAT3/miR-497a-5p signaling

Journal of Cancer Research and Clinical Oncology
Background Adipocytes are engaged in the development and progression of breast cancer (BC). Cancer-associated adipocytes (CAAs) are specific adipocytes located at the invasive front of BC that modulate tumor behaviors. This study aimed to investigate the
Chongru Zhao, Xiaomei Zhou, Xing Li, Gezi Li, Qi Zhang, Jun Zhang   +5 more
doaj   +1 more source