Zobrazeno 1 - 8
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pro vyhledávání: '"Jyrki Piila"'
Autor:
Jyrki Piila, Juhani Pitkäranta
Publikováno v:
Mathematical Methods in the Applied Sciences. 25:855-874
We study the regularity of the solution to a two-dimensional linear hyperbolic system that arises in shell membrane theory. We focus on the behaviour of the solution at a corner where none of the characteristic lines intersect the domain. In this cas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d45a998afa68c0639bc908bb64628ac0
https://doi.org/10.1002/mma.316
https://doi.org/10.1002/mma.316
Autor:
JYRKI PIILA
Publikováno v:
Mathematical Models and Methods in Applied Sciences. :169-194
We study the membrane-dominated deformation state of a thin shell, the midsurface of which is located on a hyperbolic surface of revolution whose boundary is a curvilinear polygon. The shell is loaded by a surface tractions on both faces, and clamped
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a4546f6f6a316da112a9638a085e3c6
https://doi.org/10.1142/s0218202596000535
https://doi.org/10.1142/s0218202596000535
Publikováno v:
Computer Methods in Applied Mechanics and Engineering. 128:81-121
We demonstrate some of the basic mathematical characteristics of shell deformation states and shell models from the point of view of finite element approximation. As benchmark cases, we analyze in detail three simple cylindrical shell problems. These
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22e7fb8561ab5bad7aeb7c4ea58f92e8
https://doi.org/10.1016/0045-7825(95)00870-x
https://doi.org/10.1016/0045-7825(95)00870-x
Autor:
Jyrki Piila, Juhani Pitkäranta
Publikováno v:
SIAM Journal on Mathematical Analysis. 26:820-849
Four different linear models describing the elastic deformation of a thin cylindrical shell are analyzed under a given smooth normal pressure distribution. Either a bending-dominated deformation state or a “soft” membrane-dominated deformation st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef97d99011f068a0f444940a449d83d7
https://doi.org/10.1137/s0036141092198031
https://doi.org/10.1137/s0036141092198031
Autor:
Jyrki Piila
Publikováno v:
Mathematical Models and Methods in Applied Sciences. :147-177
We study the membrane-dominated deformation state of a thin shell, the mid-surface of which is located on a surface of revolution with positive principal radii of curvature. The lateral shape of the shell is assumed to be that of a curvilinear polygo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b220b5e4240168821dd4b748af3be3a
https://doi.org/10.1142/s0218202594000108
https://doi.org/10.1142/s0218202594000108
Autor:
Jyrki Piila, Juhani Pitkäranta
Publikováno v:
Mathematical Models and Methods in Applied Sciences. :417-442
We study the membrane-dominated deformation state of a cylindrical or conical shell, the lateral shape of which is that of a curved polygon. The shell is assumed to be loaded by a smoothly varying surface traction distribution and rigidly supported (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::574f7327cb454c5b5022cfa8c0131d67
https://doi.org/10.1142/s0218202593000229
https://doi.org/10.1142/s0218202593000229
Autor:
Jyrki Piila, Juhani Pitkäranta
Publikováno v:
SIAM Journal on Mathematical Analysis. 24:1-22
Three different linear models describing the elastic deformation of a thin cylindrical shell are analyzed under a given smooth normal pressure distribution. A model problem with membrane-dominated ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b79f90894ad5d3b5562fb0087384e22
https://doi.org/10.1137/0524001
https://doi.org/10.1137/0524001
On the Integral Equation $f(x)-(c/L(x))\int^{L(x)}_0f(y)\,dy=g(x)$ where $L(x)=\min\{ax,1\}, a\gt 1$
Autor:
Jyrki Piila, Juhani Pitkäranta
Publikováno v:
J. Integral Equations Appl. 8, no. 3 (1996), 363-378
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6aacf23ca9b4f03e02aa628be5aae361
https://doi.org/10.1216/jiea/1181075957
https://doi.org/10.1216/jiea/1181075957