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SPALLING: 作品数：55被引量：228H指数：9; 导出分析报告; 相关领域：一般工业技术金属学及工艺更多>>; 相关机构：兰州理工大学更多>>; 相关期刊：《Journal of Wuhan University of Technology(Materials Science)》《Open Journal of Civil Engineering》《Science Bulletin》《Acta Mechanica Sinica》更多>>; 相关基金：国家自然科学基金国家重点基础研究发展计划中国博士后科学基金湖北省自然科学基金更多>>

Sidewall rockburst characteristics of highly stressed circular tunnel under impact load: 《Journal of Rock Mechanics and Geotechnical Engineering》2024年第12期4909-4924,共16页Wuxing Wu Fengqiang Gong Zongxian Zhang; supported by the National Natural Science Foundation of China(Grant No.42077244).; This study investigated the sidewall rockburst characteristics of highly stressed circular tunnel subjected to impact loads resulting from rock blasting or other mining-related dynamic disturbances,aiming at exploring...; 关键词：ROCKBURST SPALLING Vertical prestress Circular tunnel Impact load Biaxial Hopkinson pressure bar

Experimental investigation on rockburst characteristics of highly stressed D-shape tunnel subjected to impact load: 《Underground Space》2024年第6期153-168,共16页Wuxing Wu Fengqiang Gong Zongxian Zhang; supported by the National Natural Science Foundation of China(Grant No.42077244);the Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences(Grant No.Z020005)。; Rockburst has always been a challenge for the safe construction of deep underground engineering.This study investigated the rockburst characteristics in highly-stressed D-shape tunnels under impact loads from rock bla...; 关键词：ROCKBURST SPALLING D-shape tunnel Impact load Biaxial prestresses Biaxial Hopkinson pressure bar

Time-Varying Mesh Stiffness Calculation and Dynamic Modeling of Spiral Bevel Gear with Spalling Defects: 《Journal of Dynamics, Monitoring and Diagnostics》2024年第2期143-155,共13页Keyuan Li Baijie Qiao Heng Fang Xiuyue Yang Xuefeng Chen; supported by the National Natural Science Foundation of China(grant no.52075414).; Time-varying mesh stiffness(TVMS)is a vital internal excitation source for the spiral bevel gear(SBG)transmission system.Spalling defect often causes decrease in gear mesh stiffness and changes the dynamic characteris...; 关键词：dynamic modeling slice method SPALLING spiral bevel gear time-varying mesh stiffness(TVMS)

Investigation of stress-induced progressive failure of mine pillars using a Voronoi grain-based breakable block model: 《International Journal of Mining Science and Technology》2024年第5期713-729,共17页Shili Qiu Shirui Zhang Quan Jiang Shaojun Li Hao Zhang Qiankuan Wang; the National Natural Science Foundation of China(No.42377172);the National Key Research and Development Plan Project of China(No.2023YFC2907204).; The Voronoi grain-based breakable block model(VGBBM)based on the combined finite-discrete element method(FDEM)was proposed to explicitly characterize the failure mechanism and predict the deformation behavior of hard-...; 关键词：Pillar strength FDEM Voronoi tessellation SPALLING BULKING

Prediction of the Pore-Pressure Built-Up and Temperature of Fire-Loaded Concrete with Pix2Pix: 《Computers, Materials & Continua》2024年第5期2907-2922,共16页Xueya Wang Yiming Zhang Qi Liu Huanran Wang; the National Natural Science Foundation of China(NSFC)(52178324).; Concrete subjected to fire loads is susceptible to explosive spalling, which can lead to the exposure of reinforcingsteel bars to the fire, substantially jeopardizing the structural safety and stability. The spalling ...; 关键词：Fire loaded concrete spalling risk pore pressure generative adversarial network(GAN) Pix2Pix

Spalling characteristics of high-temperature treated granitic rock at different strain rates: 《Journal of Rock Mechanics and Geotechnical Engineering》2024年第4期1280-1288,共9页L.F.Fan Q.H.Yang X.L.Du; supported by the Beijing Natural Science Foundation,China(Grant No.JQ20039);National Natural Science Foundation of China(Grant No.12172019).; The dynamic spalling characteristics of rock are important for stability analysis in rock engineering.This paper presented an experimental investigation on the dynamic spalling characteristics of granite with differen...; 关键词：Dynamic spalling characteristics High temperature Strain rate Dynamic loading GRANITE

The NMR core analyzing tomograph:a multi-functional tool for non-destructive testing of building materials: 《Magnetic Resonance Letters》2023年第3期207-219,I0003,共14页Sabine Kruschwitz Sarah Munsch Melissa Telong Wolfram Schmidt Thilo Bintz Matthias Fladt Ludwig Stelzner; NMR is becoming increasingly popular for the investigation of building materials as it is a non-invasive technology that does not require any sample preparation nor causes damage to the material.Depending on the speci...; 关键词：Natural stone Concrete Sensitivity Moisture transport Cement hydration Supplementary cementitious materials Frost and salt attack Fire spalling

Spalling failure of deep hard rock caverns被引量：5: 《Journal of Rock Mechanics and Geotechnical Engineering》2023年第8期2083-2104,共22页Guoshao Su Yanxiang Chen Quan Jiang Chongjin Li Wei Cai; The authors greatly gratefully acknowledge the financial support from the National Natural Science Foundation of China(Grant Nos.52169021 and 51869003);the Interdisciplinary Scientific Research Foundation of Guangxi University,China(Grant No.2022JCA004).; Spalling is a typical brittle failure phenomenon of hard rock in deep caverns under high geostress.In this study,key issues are systematically studied concerning the spalling failure of deep hard rock caverns.First,th...; 关键词：Spalling failure Hard rock CAVERN TUNNEL Rock test Numerical simulation

Pseudo-discontinuum model to simulate hard-rock mine pillars被引量：1: 《Underground Space》2023年第4期81-95,共15页Erick Ro genes Alessandra dos Santos Gomes Marcio Muniz de Farias Leandro Lima Rasmussen; based upon a R&D Project from ANEEL-National Agency(Grant No.PD-0394–1709/2017)supported by Eletrobras Furnas and University of Brasilia;supported by Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq and the Brazilian National Department of Transport Infrastructure(Grant No.TED 352/2020).; In this study,the pseudo-discontinuum modeling technique,called continuum Voronoi block model(CVBM),was applied to repre-sent the behavior of hard-rock pillars from underground mines subjected to high field stresses.T...; 关键词：Brittle failure SPALLING BULKING Voronoi tessellation

Crystal Plasticity-Based Spalling Damage Model for Ductile Metals: 《Acta Mechanica Solida Sinica》2023年第1期76-85,共10页Chen Li Hai-Ying Wang Lan-Hong Dai; supported by the NSFC(Nos.12172367,11790292,11988102,and U2141204);the Strategic Priority Research Program(Nos.XDB22040302 and XDB22040303).; Spalling is a typical tensile failure that results from the coupling evolution of microstructure and microdamage under high strain-rate loading.To understand the spalling damage behavior of polycrystalline materials a...; 关键词：SPALLING Crystal plasticity Microvoid nucleation and growth Grain boundary Finite element method

SPALLING