Results 21 to 30 of about 6,699 (248)

Analysis of the asynchronous electrical drives for the industrial machines with a cyclic (intermittent) electrical shock load

Bakar, 2023
The analysis and proposed optimization technique of asynchronous electric drives of production machines with a cyclic impact load, under the condition of minimum energy consumption, was presented in this paper. The mean values of the electric motor torque in the working range of a slider, were adopted in calculation. The derived formulae can be used to
Nenad Marković, Slobodan Bjelić, Filip Marković   +2 more
openaire   +2 more sources

Novel Gas Turbine Challenges to Support the Clean Energy Transition

Energies, 2022
The ongoing energy transformation, which is fueled by environmentally cautious policies, demands a full synergy with existing back-up gas turbines (GTs).
Hiyam Farhat, Coriolano Salvini
doaj   +1 more source

Experimental study on equilibrium initiation and extension of multiple clusters of fractures based on true triaxial physical simulation

Journal of Natural Gas Geoscience, 2023
In the context of tight sandstone reservoirs in the Ordos Basin characterized by compact and heterogeneous rock formations, conventional fracturing techniques yield monolithic fracture shapes, rendering 3D reservoir reconstruction unattainable.
Xiangwei Kong, Hao Huang, Guangyu Xie, Rentian Yan, Hongxing Xu, Song Li   +5 more
doaj   +1 more source

Low cycle fatigue life improvement of AISI 304 by initial and intermittent wire brush hammering [PDF]

, 2013
The effects of hammering by wire brush as a method of improving low cycle fatigue life of highly ductile austenitic stainless steel AISI 304 have been investigated through an experimental study combining imposed strain fatigue tests and assessment of ...
KHLIFI, Ammar, SIDHOM, Habib, MAKHLOUF, Kamel, SIDHOM, Naziha, BRAHAM, Chedly   +4 more
core   +1 more source

Experimental study on coupling effects of cyclic confining pressure and intermittent cyclic loading on deformation behavior of saturated soft clay

Yantu gongcheng xuebao
The deformation characteristics of soft clay under intermittent cyclic loading and cyclic confining pressure are studied by conducting two types of cyclic triaxial tests, i.e., continuous cyclic loading and intermittent cyclic loading triaxial tests, and
HUANG Juehao 1, 2, QIU Yuefeng 3, WU Jiaming 4, LI Yinan 5, CHEN Jian 1, 2, FU Xiaodong 1, 2
doaj   +1 more source

The Bree problem with different yield stresses on-load and off-load and application to creep ratcheting

, 2014
The ratchet boundaries and ratchet strains are derived for the Bree problem and an elastic perfectly plastic material with different yield stresses on-load and off-load.
Chen, Haofeng, Ure, James, Bradford, R.A.W.   +2 more
core   +1 more source

Study on stress state and integrity of cement sheath in well cementing of CCS pilot well in block A, East China Sea [PDF]

Youqicang pingjia yu kaifa
The shallow CO2 geological storage in block A of the East China Sea faces challenges such as large difference in horizontal in-situ stress and significant influence of cyclic stress.
HAO FENG, DU SHUAI, YANG XUEFENG, WANG KEXIN, GAO DONGLIANG, HUANG DA   +5 more
doaj   +2 more sources

Experimental study on deformation behaviors of saturated soft clay under intermittent cyclic loading with various drained conditions

Yantu gongcheng xuebao
In the previous studies, the cyclic triaxial tests under intermittent cyclic loading are used to study the deformation characteristics of soft clay under traffic loads. Both confining pressure and deviator stress vary cyclically in the stress field under
HUANG Juehao 1, 2, XU Linfeng 3, 1, LU Yuan 5, YAN Wenlong 4, 1, CHEN Jian 1, 2, FU Xiaodong 1, 2
doaj   +1 more source

Coupling effects of cyclic confining pressure and loading frequency on deformation behavior of saturated soft clay under intermittent cyclic loading

Yantu gongcheng xuebao
After the train passes away, the subgrade soils undergo cyclic loading and intermittent periods. The existence of the intermittent period can also affect the mechanical properties of soil.
HUANG Juehao 1, 2 , ZHONG Yu 3, WU Jiaming 4, MENG Chao 5, 1, CHEN Jian 1, 2, FU Xiaodong 1, 2
doaj   +1 more source

Creep-fatigue life assessment of cruciform weldments using the linear matching method

, 2013
This paper presents a creep-fatigue life assessment of a cruciform weldment made of the steel AISI type 316N(L) and subjected to reversed bending and cyclic dwells at 550C using the Linear Matching Method (LMM) and considering different weld zones.
Chen, Haofeng, Gorash, Yevgen
core   +1 more source