Results 11 to 20 of about 139,021 (263)

Effect of Intermediate Annealing on Microstructure and Property of 5182 Aluminum Alloy Sheet for Automobile

open access: yesCailiao gongcheng, 2016
Effect of intermediate annealing on the microstructure and properties of 5182 aluminum alloy sheet with full annealed state (5182-O) was investigated by means of optical microscope, scanning electron microscope and universal testing machine.
WANG Yu   +4 more
doaj   +1 more source

Numerical simulation study on the evolution characteristics of the stress induced by mining in deep adjacent working faces

open access: yesGeoenvironmental Disasters, 2023
Background The mining-induced stress in the surrounding rock after coal seam mining is the primary cause of damage and failure of the surrounding rock in the mining area.
Shoulong Ma   +5 more
doaj   +1 more source

Peen forming using rectangular solid pins for anisotropic double-curved surface

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Peen forming has been widely used in the aerospace industry for forming complex components of large thin wings. The conventional peen forming using spherical shots shows a tendency to form the spherical surface because of its axisymmetric plastic strain.
Takahiro OHTA   +2 more
doaj   +1 more source

Fast Hebbian plasticity and working memory

open access: yesCurrent Opinion in Neurobiology, 2023
Theories and models of working memory (WM) were at least since the mid-1990s dominated by the persistent activity hypothesis. The past decade has seen rising concerns about the shortcomings of sustained activity as the mechanism for short-term maintenance of WM information in the light of accumulating experimental evidence for so-called activity-silent
Anders Lansner   +2 more
openaire   +2 more sources

Hebbian fast plasticity and working memory

open access: yesCoRR, 2023
Theories and models of working memory (WM) were at least since the mid-1990s dominated by the persistent activity hypothesis. The past decade has seen rising concerns about the shortcomings of sustained activity as the mechanism for short-term maintenance of WM information in the light of accumulating experimental evidence for so-called activity-silent
Anders Lansner   +2 more
openaire   +2 more sources

The Change in the Shape Characteristics of the Plastic Zone in the Surrounding Rock of an Auxiliary Retracement Channel and a Reasonable Channel Spacing Determination Method

open access: yesApplied Sciences, 2023
In underground coal mines, the stability of the retracement channel in the surrounding rock is crucial for the safe and efficient retracement of the equipment and to guarantee the continuity of the retracement work.
Xu Gao   +5 more
doaj   +1 more source

Design optimization of variable blank holder force trajectory and slide velocity in sheet metal forming

open access: yesNihon Kikai Gakkai ronbunshu, 2018
In sheet forming, the blank holder force (BHF) has a direct influence on product quality. A high BHF leads to tearing, whereas a low one results in wrinkling. For successful sheet forming, the BHF should be adjusted.
Masaki YOKOYAMA   +5 more
doaj   +1 more source

Stability Analysis and Reasonable Layout of Floor Drainage Roadway above Confined Water and under Mining Influence

open access: yesGeofluids, 2021
The surrounding rock failure range of floor drainage roadway under the mining influence and its effect on the aquiclude are the key to determine the aquiclude thickness of the floor.
Xiaofei Guo   +5 more
doaj   +1 more source

Forging with optimal back-pressure profile using sequential approximate optimization

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper proposes a method for determining optimal back-pressure profile in forging using a sequential approximate optimization (SAO). In forging, it is important to minimize an unfilled area for improving the product quality. To achieve this objective,
Masato OKADA   +7 more
doaj   +1 more source

Study on floor failure mechanism of paste backfill mining and division area control technology

open access: yesMeikuang Anquan, 2022
Aiming at the problem of the safety mining problems of longwall paste filling working face under buildings on high confined water in Daizhuang Coal Mine, through theoretical analysis, numerical simulation and field measurement, the equivalent roadway ...
XUAN Zhaojun, CHANG Qingliang
doaj   +1 more source

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