Results 41 to 50 of about 11,945 (153)

Experimental study on the punching–shear performance of reinforced concrete slab‒column joints with various reinforcements and openings

Journal of Asian Architecture and Building Engineering
To elucidate the punching–shear failure mechanism and effect pattern of reinforced concrete (RC) slab–column joints with stirrups and/or openings, punching–shear failure tests were systematically conducted on 11 RC slab–column joint specimens to study ...
Hongtao Lai, Jing Zhou, Rui Sun, Fuchang Wang   +3 more
doaj   +1 more source

Hydraulic fracturing and punching integration enhanced permeability gas extraction technology

Gong-kuang zidonghua
The existing hydraulic fracturing, hydraulic punching, hydraulic slotting, hydraulic cutting and other underground hydraulic permeability enhancement technologies in coal mines have complex processes, single adaptability conditions, and high labor ...
WANG Baogui
doaj   +1 more source

Vibration Control of a High-Speed Precision Servo Numerically Controlled Punching Press: Multidomain Simulation and Experiments

Shock and Vibration, 2017
A three-degree-of-freedom mathematical vibration model of a high-speed punching press was developed in order to explore the vibration modes of the punching press.
Teng Xu, Qinxiang Xia, Xiaobin Long, Gianluca Buffa   +3 more
doaj   +1 more source

Study and Optimization of the Punching Process of Steel Using the Johnson–Cook Damage Model

Metals
Sheet metal forming processes are widely used in applications such as those in the automotive or aerospace industries. Among them, punching is of great interest due to its high productivity and low operating cost.
Adrián Claver, Andrea Hernández Acosta, Eneko Barba, Juan P. Fuertes, Alexia Torres, José A. García, Rodrigo Luri, Daniel Salcedo   +7 more
doaj   +1 more source

Influence of Hydraulic Domain on Vibration Control and Overload Prediction of High-Speed Punching Press: Multidomain Modelling and Experiment

Shock and Vibration, 2019
By the multidomain modelling method, the vibration of a high-speed punching press was modelled and simulated, and the influence of the hydraulic system on the vibration of the punching press and the protection efficiency of the punching press under the ...
Teng Xu, Qinxiang Xia, Xiaoyu Wu, Jiaqi Ran, Feng Gong, Chunying Lee   +5 more
doaj   +1 more source

Punch & Judy

Móin-Móin: Revista de estudos sobre teatro de formas animadas, 2018
In this arcticle Glyn Edwards reflects about Punch & Judy being named among the first ten official Icons of England.
openaire   +5 more sources

Robust Design of a Six-Phase Segmented Switch Reluctance Motor Considering Manufacturing Tolerances and Manufacturing Processes

IEEE Access
Most electrical machine design optimization processes do not include constraints imposed during manufacture. Ignoring cutting tolerance when optimizing a machine, for example, can result in a machine who’s performance is susceptible to ...
Farshid Mahmouditabar, Nick J. Baker
doaj   +1 more source

Research on the Punching Shear Performance of Steel Grid–UHPC Composite Bridge Decks

Buildings
This study conducted punching shear tests on steel grid–ultra-high-performance concrete (UHPC) composite bridge decks and performed finite element analysis (FEA) to evaluate their punching shear performance. Initially, a comparative analysis is conducted
Sumei Liu, Peng Wang, Pengfei Ren, Hanshan Ding   +3 more
doaj   +1 more source

Slab thickness-shear reinforcement interaction on shear strength of interior slab-column connections

Journal of Engineering and Applied Science
The effects of slab thickness and punching shear reinforcement ratio on the individual contributions of concrete and reinforcement on punching shear strength of interior slab-column connections are theoretically investigated.
Osman M. Ramadan, Rasha T. S. Mabrouk, Gehad S. Younis   +2 more
doaj   +1 more source

Reducing Maximum Punching Force in Sheet Cold Forming: A Numerical Study of a New Punch Design (Part I)

Metals
The present research investigates the optimization of the punching process in cold forming manufacturing, focusing on enhancing tool life, reducing damage, and improving product quality.
Abdelwaheb Zeidi, Mabrouka Akrout, Khaled Elleuch, António Pereira   +3 more
doaj   +1 more source