Results 31 to 40 of about 1,315 (75)
Determination of the stress state beneath arbitrary axisymmetric tangential contacts in Hertz-Mindlin approximation based on the superposition of solutions for parabolic contact [PDF]
arXiv, 2021 As an improvement to the recently proposed procedure for the determination of the stress state beneath axisymmetric tangential contacts in Hertz-Mindlin approximation via an appropriate superposition of solutions for the respective flat-punch problem, the determination via the superposition of solutions for parabolic contact is demonstrated. It has two
arxiv
Pre-notched dog bone small punch specimens for the estimation of fracture properties [PDF]
Engineering Failure Analysis 96 (2019) 236-240, 2018 In recent years, the pre-notched or pre-cracked small punch test (P-SPT) has been successfully used to estimate the fracture properties of metallic materials for cases in which there is not sufficient material to identify these properties from standard tests, such as CT or SENB specimens.
arxiv +1 more source
Center-Punching Mechanical Clinching Process for Aluminum Alloy and Ultra-High-Strength Steel Sheets
MetalsIn recent years, with the rapid advancement of automotive lightweight technology, the mechanical clinching process between aluminum alloy and ultra-high-strength steel sheets has received extensive attention.
Ping Qiu +4 more
doaj +1 more source
Fast Privacy-Preserving Punch Cards [PDF]
arXiv, 2020 Loyalty programs in the form of punch cards that can be redeemed for benefits have long been a ubiquitous element of the consumer landscape. However, their increasingly popular digital equivalents, while providing more convenience and better bookkeeping, pose a considerable privacy risk.
arxiv
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 +3 more
doaj +1 more source
Metals, 2020 High-strength low-alloy steels (HSLA) are gaining popularity in structural applications in which weight reduction is of interest, such as heavy duty machinery, bridges, and offshore structures.
Carlos Jiménez-Peña +3 more
doaj +1 more source
Observations of a glaciating hole-punch cloud [PDF]
, 2009 Remote-sensing measurements of a hole-punch cloud or fall-streak hole are presented. The cloud was observed with a vertically pointing infrared ceilometer, Doppler lidar, sky camera and a polarimetric radar inclined at 45 degrees. The Doppler lidar and polarimetric radar observations show that the aircraft-induced fall streak was composed primarily of ...
arxiv +1 more source
Kinematic flow patterns in slow deformation of a dense granular material [PDF]
Granular Matter 17(5) 2015 553--565, 2015 The kinematic flow pattern in slow deformation of a model dense granular medium is studied at high resolution using \emph{in situ} imaging, coupled with particle tracking. The deformation configuration is indentation by a flat punch under macroscopic plane-strain conditions. Using a general analysis method, velocity gradients and deformation fields are
arxiv +1 more source
Analysis of the Strength on the Rotor Punching Sheet of Nuclear Reactor Cooling Medium Driving Motor
Journal of Harbin University of Science and Technology, 2017 A strong stress is withstood by the rotor punching sheet during the running of nuclear reactor cooling medium driving motor. In order to study the strength on the rotor punching sheet and the influential factor of its stress，the rotor of driving motor ...
GE Bao-jun, ZHANG Wei
doaj +1 more source
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 +5 more
doaj +1 more source