Results 11 to 20 of about 9,089,683 (229)

A contact stress capacity model for cylindrical wormsets [PDF]

open access: yesFME Transactions, 2022
A contact stress capacity expression is derived for cylindrical worm sets by considering the worm as a helical rack mating with a helical gear. The concept of the equivalent spur gear for a helical gear defined by the instantaneous radius of curvature in
Osakue Edward E., Anetor Lucky
doaj   +1 more source

Effect of friction on the contact stress of a coated polymer gear

open access: yesFriction, 2020
Polymer gears are used extensively in various applications. However, durability issues have been emerging because of friction at gear tooth contact areas. To extend the lifetime of polymer gears, a low-frictional coating has been considered as a possible
S. Bae, K. Seo, Dae-Eun Kim
semanticscholar   +1 more source

Stress shielding at the bone‐implant interface: Influence of surface roughness and of the bone‐implant contact ratio [PDF]

open access: yesJournal of Orthopaedic Research, 2020
Short and long‐term stabilities of cementless implants are strongly determined by the interfacial load transfer between implants and bone tissue. Stress‐shielding effects arise from shear stresses due to the difference of material properties between bone
M. Raffa   +4 more
semanticscholar   +1 more source

Parent–Infant Skin-to-Skin Contact and Stress Regulation: A Systematic Review of the Literature

open access: yesInternational Journal of Environmental Research and Public Health, 2021
Several studies have focused on neonatal maternal separation (MS) to investigate behavioural and neuroendocrine reactions to lack of contact, but only a few have focused on early separation in the first days or weeks after birth.
C. Ionio, Giulia Ciuffo, M. Landoni
semanticscholar   +1 more source

Instability-Associated Changes in Contact Stress and Contact Stress Rates Near a Step-Off Incongruity [PDF]

open access: yesThe Journal of Bone & Joint Surgery, 2008
Intra-articular fractures can result in articular surface incongruity and joint instability, both of which can lead to posttraumatic osteoarthritis. The purpose of this study was to quantify changes in contact stresses and contact stress rates in incongruous human cadaveric ankles that were either stable or unstable.
Todd O, McKinley   +3 more
openaire   +2 more sources

Contact stresses in point frogs [PDF]

open access: yesE3S Web of Conferences, 2020
The methodology for calculating the contact stress state for various contact types of frogs and wheel is presented. The magnitudes of contact stresses in the frogs can be calculated according to the Hertz-Belyaev method, taking into account certain evaluating factors.
Glusberg Boris   +3 more
openaire   +2 more sources

FFT-Based Methods for Computational Contact Mechanics

open access: yesFrontiers in Mechanical Engineering, 2020
Computational contact mechanics seeks for numerical solutions to contact area, pressure, deformation, and stresses, as well as flash temperature, in response to the interaction of two bodies.
Q. Jane Wang   +5 more
doaj   +1 more source

A Study of Static and Dynamic Mechanical Behavior of the Substrate in Ultrasonic Consolidation [PDF]

open access: yes, 2006
A new 2-D FEM model is developed for a fundamental study of the time dependent mechanical behavior of the substrate in ultrasonic consolidation. The simulation shows that for a given vibration condition, the amplitude of contact friction stress and ...
Li, Leijun, Zhang, Chunbo
core   +1 more source

Measuring the micromechanical properties of oesophageal mucosa with atomic force microscopy

open access: yesBiosurface and Biotribology, 2020
The micromechanical properties of soft tissue can be used as markers for the physiological state and function of the tissue. Deep understanding of the micromechanics of soft tissue, such as the oesophagus, is of great significance to the design of ...
Chengxiong Lin, Jingyang Xie, Wei Li
doaj   +1 more source

Reducing Contact Stress of the Surface by Modifying Different Hardness of Femoral Head and Cup in Hip Prosthesis

open access: yesFrontiers in Mechanical Engineering, 2021
The wear of hip prosthesis due to applied load and sliding distance during the patient's daily activity cannot be avoided. Wear causes osteolysis or metallosis due to the wear debris produced by the wear process.
Eko Saputra   +5 more
doaj   +1 more source

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