Zobrazeno 1 - 10
of 310
pro vyhledávání: '"Ogar P"'
Publikováno v:
MATEC Web of Conferences, Vol 329, p 03066 (2020)
To study the flattening of the sphere, it is proposed to use the kinetic indentation diagram by the plane. Given the known values of the reduced elastic modulus, applied force, maximum and residual deformation, it is possible to determine the contact
Externí odkaz:
https://doaj.org/article/0930ca65147e4572b0a3a9e5cc72a794
Influence of the form of axisymmetric load on the stress-strain state of an elastoplastic half-space
Publikováno v:
MATEC Web of Conferences, Vol 298, p 00094 (2019)
The problems of elastic sinking of materials and elastic restoration of an imprint under loading of an elastic-plastic half-space with an axisymmetric load of the form,P(r)=P0(1-r2/a2)β where 0
Externí odkaz:
https://doaj.org/article/c1970dbc0d6f414faa60daa66ef56199
Publikováno v:
MATEC Web of Conferences, Vol 298, p 00093 (2019)
The indentation of a sphere into an elastoplastic half-space is considered, which is accompanied by pile-up / sink-in effects, extrusion of material around a sphere (formation of a bulk) and elastic sinking of the material. The evolution of studies o
Externí odkaz:
https://doaj.org/article/ce494bbbbdba4faeb3eea224474d9451
Publikováno v:
MEJ (Mathematics Education Journal), Vol 8, Iss 2, Pp 120-136 (2024)
One of the pertinent reasons for poor academic achievement in Mathematics is fundamentally linked to the application of ineffective teaching methods by teachers to impact knowledge to learners. This study adopts a quasi-experimental pre-test post-tes
Externí odkaz:
https://doaj.org/article/1f97ca2f5e7749499624ea587c4382d1
Publikováno v:
AIMS Mathematics, Vol 9, Iss 10, Pp 28079-28099 (2024)
In this study, we investigate the stability and asymptotic stability properties of Caputo fractional time-dependent systems with delay by employing vector Lyapunov functions. Utilizing the Caputo fractional Dini derivative on Lyapunov-like functions,
Externí odkaz:
https://doaj.org/article/e282c7f4459947b3aa96124402a51980
Publikováno v:
MATEC Web of Conferences, Vol 224, p 02051 (2018)
The paper is devoted to the specification of the parameters of Bartenev-Lavrentiev’s empirical dependence for the relative area of contact with taking into account the mutual influence of asperities. The relative contact area is determined using a
Externí odkaz:
https://doaj.org/article/c4771269aa71474f8b3ee81ad423747c
Publikováno v:
MATEC Web of Conferences, Vol 224, p 02050 (2018)
A layered half-space is represented as the sum of parts of homogeneous half-spaces of coating materials and the base material, the rigidity of which corresponds to the rigidities of the coating and the base. Using a rigid model of a layered elastic b
Externí odkaz:
https://doaj.org/article/0060c84b074d4f43b5d5efc469ec88e3
Autor:
Charles Effiong, William Inyang, Geraldine Mbu-Ogar, Florence Otuagoma, Inyang Inyang, Ije Ubi, Innocent Okoi
Publikováno v:
Investment Management & Financial Innovations, Vol 21, Iss 2, Pp 44-55 (2024)
Satisfying the consumer and contributing to societal well-being have been globally acknowledged, and these developments consequently boost corporate image, attract investors, increase stock prices, enhance firm value, and enable industrial and other
Externí odkaz:
https://doaj.org/article/481a9d377f1941018977777e064566bf
Publikováno v:
MATEC Web of Conferences, Vol 129, p 06016 (2017)
In this paper we study the problem of the contact characteristics changing on a decrease of the load applied to the preloaded joint of roughness surfaces. The penetration of a rigid sphere (indenter) into the elastic hardenable half-space is consider
Externí odkaz:
https://doaj.org/article/3c753e38c4e24d2a89ae8bd7d156a139
Publikováno v:
MATEC Web of Conferences, Vol 129, p 06017 (2017)
A penetration of spherical asperity into the elastic-plastic hardening half-space is described. The elastic-plastic material properties correspond to Hollomon´s power law. In this case the empirical Meyer law relating a spherical indentation load wi
Externí odkaz:
https://doaj.org/article/c96e04ca7ad04007b49816fcc7bf9256