Results 21 to 30 of about 4,353 (213)

Dilatancy behaviors and equation of calcareous sand considering stress path and particle breakage

Yantu gongcheng xuebao, 2021
The stress path and particle breakage have an impact on the dilatancy of calcareous sand. A series of drained triaxial compression tests with different stress paths and confining pressures are carried out to investigate the dilatancy of calcareous sand ...
LUO Ming-xing , ZHANG Ji-ru , LIU Xiao-xuan
doaj   +1 more source

Drained triaxial tests on mechanical properties of calcareous sand under various stress paths

Yantu gongcheng xuebao, 2021
The mechanical properties of calcareous sand are low in strength and easy to crush and have the characteristics of stress path dependence. In order to study the effects of different stress paths on the particle crushing and mechanical properties of ...
ZHANG Ji-ru, LUO Ming-xing, PENG Wei-ke, ZHANG Bi-wen
doaj   +1 more source

Mechanical response of red clay under different stress paths and loading and unloading rates

Shuiwen dizhi gongcheng dizhi
During foundation pit excavation, soils are subjected to multiple coupled factors and present complex failure characteristics, making it difficult to capture their mechanical behavior through single-factor analysis. In this study, the natural red clay in
Yongfen RUAN, Zhenjie TANG, Yigao HUAI, Shaoqi ZHENG, Yuanhai ZHOU   +4 more
doaj   +1 more source

Study on adaptability of generalized plasticity model of rockfill materials under various stress paths

Shuili Shuiyun Gongcheng Xuebao, 2017
Taking tests of granite rockfill materials under various stress paths (e.g., triaxial test, constant p test and constant stress ratio test) as a case study, comparison between the generalized plasticity model and Shen's double yield surface model is made
BIAN Shihai, LI Guoyin, WEI Kuangmin, MI Zhankuan   +3 more
doaj   +1 more source

Stress Path Dependence of Mechanical Properties of Saturated Soft Loess and its Simulation

Taiyuan Ligong Daxue xuebao
[Purposes] The saturated soft loess formed by the rise of groundwater level is mostly in a soft plastic and flow plastic state, with engineering geological characteristics of high water content, high compression, and low bearing capacity.
LI Shixiong, ZHANG Dengfei, ZHANG Xiaohui, CHEN Hanjiang, WANG Yonghua   +4 more
doaj   +1 more source

The Effect of the Stress Path on Squeezing Behavior in Tunneling [PDF]

Rock Mechanics and Rock Engineering, 2008
Rock Mechanics and Rock Engineering, 42 (2)
Cantieni, Linard, Anagnostou, Georgios; id_orcid0000-0001-9172-655X   +1 more
openaire   +2 more sources

Influences of temperature stress path on strength characteristics of undisturbed marine sediments

Yantu gongcheng xuebao
The difference between the room and the in-situ temperatures leads to that of the measured physical and mechanical parameters of marine sediments. Based on the temperature-controlled triaxial apparatus, the consolidated undrained shear tests are carried ...
ZHANG Xinrui 1, 3, KONG Gangqiang 1, YANG Qing 2
doaj   +1 more source

Guidelines for Pediatric Radiotherapy Simulation: A Report From the Children's Oncology Group Radiation Oncology Discipline

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei, Stephen Mihalcik, Sujith Baliga, Young Kwok, Dana Casey, Eric Ehler, Christiane Burton, John C. Breneman, Daphne A. Haas‐Kogan, Suzanne L. Wolden, Arnold C. Paulino, Nadia N. Laack, Natia Esiashvili, Sarah Milgrom, Christine Hill‐Kayser, Thomas J. Fitzgerald, John A. Kalapurakal, Chia‐Ho Hua   +17 more
wiley   +1 more source

Effect of stress path, size and shape on the optimum parameters of a brittle-ductile concrete model

Engineering Structures and Technologies, 2017
The main purpose of this study is to investigate the effects of the stress path, size and shape of the specimen, on the optimum values of the plastic input parameters of Concrete Damaged Plasticity-CDP- model of the ABAQUS software.
Mojtaba Labibzadeh, Reza Hamidi
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

FEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source