Results 11 to 20 of about 19,680 (211)

Numerical simulation of cavitation-bubble expansion and collapse inside a bottle subjected to impact on its topside

open access: yesEngineering Applications of Computational Fluid Mechanics, 2021
In this study, we simulate the acceleration-induced cavity bubble expansion and its non-spherical collapse in a drastically varying pressure field caused by mechanical impact, and we qualitatively compare the results with those for similar ζ number ...
Yue-han Chen, Jie-min Zhan, Yu-tian Li
doaj   +1 more source

Explicit Dynamic Analysis by a Rigid Body-Spring Model of Impact Loads of Artillery on Middle Age Fortifications

open access: yesBuildings, 2021
The development of artillery in Europe at the end of the Middle Ages brought a necessary change in military architecture. This change was a radical rethinking of the entire geometry and architectural design of city walls which required an increase in ...
Vito Tateo, Siro Casolo
doaj   +1 more source

The Influences of Projectile Material and Environmental Temperature on the High Velocity Impact Behavior of Triaxial Braided Composites

open access: yesApplied Sciences, 2021
Two-dimensional (2D) triaxial braided composites with braiding angle (± 60°/0°) have been used as aero-engine containing casing material. In the current paper, three types of projectile with the same mass and equivalent diameter, including cylinder ...
Lulu Liu   +4 more
doaj   +1 more source

Posture and Dynamics Analysis of Hydraulic Support with Joint Clearance under Impact Load

open access: yesMachines, 2023
A hydraulic support is one of the key pieces of equipment in a fully mechanized coal-mining face. The shaft is seriously worn due to repeated support shifting in coal-mining operations, and the hydraulic support bears a large amount of impact load in the
Qingliang Zeng   +4 more
doaj   +1 more source

Evaluation of Steel Frame Equipped with the Replaceable Shear Link Made of Shape Memory Alloy under the Impact Load [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering
Despite their low stiffness, moment frames (MFs) are considered conventional lateral strength systems for low- and moderate-rise structures due to their ability to absorb energy and provide suitable ductility, along with architectural considerations.
Reza Kamgar   +2 more
doaj   +1 more source

Experimental study on anchoring crack-resistance effects of prestressed anchor under impact loads

open access: yesYantu gongcheng xuebao, 2023
Under the action of mining stresses and impact dynamic loads, the development, expansion and instability of the primary fissures in the surrounding rock of deep roadways are an important cause for the dynamic disasters of the deep surrounding rock, and ...
ZU Guoli 1, WANG Jun 1, 2, NING Jianguo 1, PU Zhiqiang 2, YAN Liheng 3, REN Zhiwei 1, HU Hao 4
doaj   +1 more source

Experimental Research on the Impact Resistance of Partially Precast Concrete Beams Strengthened with Bonded Steel Plates

open access: yesApplied Sciences, 2023
A structure may be exposed to a range of unexpected loads throughout its full life cycle. Partially precast concrete (PC) beams refer to the process of manufacturing concrete beams in which one part of the component is pre−fabricated in a factory and the
Xueyuan Yan   +4 more
doaj   +1 more source

Experimental research on influence of wave environment on high-speed water entry load and trajectory characteristics

open access: yesXibei Gongye Daxue Xuebao, 2021
Wave environment is a common fact happened when objects enter water under real conditions, which changes the morphology of the free interface when entering water.
Yang Xiaoguang   +6 more
doaj   +1 more source

Effect of Impact Load on Splice Length of Reinforcing Bars

open access: yesInternational Journal of Concrete Structures and Materials, 2020
Impact loading damage of reinforced concrete (RC) members deteriorates bond strength of reinforcing bars. To understand the effect of strain rate on the bond strength of reinforcing bars in RC beams under impact load, drop hammer test was performed on ...
Hyeon-Jong Hwang   +4 more
doaj   +1 more source

Charpy Impact Properties of Hydrogen-Exposed 316L Stainless Steel at Ambient and Cryogenic Temperatures

open access: yesMetals, 2019
316L stainless steel is a promising material candidate for a hydrogen containment system. However, when in contact with hydrogen, the material could be degraded by hydrogen embrittlement (HE).
Le Thanh Hung Nguyen   +5 more
doaj   +1 more source

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