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of 19
pro vyhledávání: '"Osmo Kaleva"'
Publikováno v:
Rakenteiden Mekaniikka
Artikkelissa tarkastellaan evoluutioyhtälöpohjaisen jännitysväsymismallin stokastista laajennusta. Esitetty malli on muodostettu yleisten kontinuumimekaniikan periaatteiden mukaisesti ja on siten luonnostaan moniakselinen ja käsittelee kaikki j
Publikováno v:
Rakenteiden Mekaniikka
Artikkelissa tarkastellaan äärettömään elinikään liittyvää varmuuskertoimen laskentaa kontinuumimekaniikkaan perustuvassa jännitysväsymismallissa. Jännityshistoria voi olla joko deterministinen tai stokastinen. Varmuuskertoimen laskenta r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05390a64e52025937f0fb37dcb6fb824
http://urn.fi/urn:nbn:fi-fe2021060935920
http://urn.fi/urn:nbn:fi-fe2021060935920
Autor:
Osmo Kaleva, Heikki Orelma
Publikováno v:
International Journal of Fatigue. 143:105996
This paper is a sequel to papers studying the continuum approach to the high-cycle fatigue model introduced in Ottosen et al. (2008). We model the stress history as a stochastic process and use it to simulate the evolution of the fatigue and the life
Autor:
Osmo Kaleva, Heikki Orelma
Publikováno v:
Probabilistic Engineering Mechanics. 63:103117
This paper is a sequel to papers studying the continuum approach to the high-cycle fatigue model of Ottosen et al. First, we study the estimation of fatigue limit and statistical characteristics of the estimates. We have two cases. Either the fatigue
Autor:
Janne Kauhanen, Osmo Kaleva
Publikováno v:
Fuzzy Sets and Systems. 238:135-139
We study the compactness in a fuzzy metric space. We also give a generalization of Niemytzki-Tychonoff theorem for a fuzzy metric space.
Publikováno v:
Hakala, T, Kaleva, O & Harlin, A 2012, ' Stress-strain behavior of polyamide 6 staple fibers of punch-needled press felts under simulated wet-pressing conditions ', Journal of the Textile Institute, vol. 103, no. 12, pp. 1280-1293 . https://doi.org/10.1080/00405000.2012.677566
This study evaluates the specific stress (tenacity) and strain (elongation) of polyamide 6 staple fibers, which were virgin, punch-needled on the press felt, and worn on the press felt under simulated wet-pressing conditions. The staple fibers were d
Autor:
Osmo Kaleva
Publikováno v:
Fuzzy Sets and Systems. 209:84-88
In this note we show that a fuzzy number is level-continuous if and only if it is semistrictly quasiconcave. Furthermore, we show that a level-continuous fuzzy set defined in R^n,n>1, is not necessarily semistrictly quasiconcave.
Autor:
Osmo Kaleva
Publikováno v:
Fuzzy Sets and Systems. 209:104-110
In this paper we introduce an iteration semigroup of a nonlinear fuzzy-valued function. We show that the iterates converge and the limit function, called the fuzzy exponential function, is a solution to an autonomous fuzzy Cauchy problem.
Autor:
Osmo Kaleva
Publikováno v:
Nonlinear Analysis: Theory, Methods & Applications. 64:895-900
We study the effect of the forcing term to the solution of a fuzzy differential equation.
Autor:
Osmo Kaleva
Publikováno v:
Fuzzy Sets and Systems. 159:2190-2192
We argue that in some recent papers discussing the completion of fuzzy metric and fuzzy normed spaces proper credit is not given to earlier works on the subject.