Zobrazeno 1 - 10
of 192
pro vyhledávání: '"Jaakko Heinonen"'
Autor:
Maria Tikanmäki, Jaakko Heinonen
Publikováno v:
Wind Energy, Vol 25, Iss 4, Pp 639-659 (2022)
Abstract When designing offshore wind turbines in ice‐covered seas, site‐specific ice conditions present crucial input for the structural design. In this study, methods of estimating the maximum level ice thickness occurring once in 50 years and
Externí odkaz:
https://doaj.org/article/1b608720bdc54c1dbeb880ee24365a5d
Autor:
Maria Tikanmäki, Jaakko Heinonen
Publikováno v:
Tikanmäki, M & Heinonen, J 2022, ' Estimating extreme level ice and ridge thickness for offshore wind turbine design : Case study Kriegers Flak ', Wind Energy, vol. 25, no. 4, pp. 639-659 . https://doi.org/10.1002/we.2690
When designing offshore wind turbines in ice-covered seas, site-specific ice conditions present crucial input for the structural design. In this study, methods of estimating the maximum level ice thickness occurring once in 50 years and parameters of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3bf730a289f598249d009fa968331637
https://cris.vtt.fi/en/publications/a2a2f193-1808-4e03-964b-1b4405fa5ca5
https://cris.vtt.fi/en/publications/a2a2f193-1808-4e03-964b-1b4405fa5ca5
Autor:
Jaakko Heinonen, Arto Sorsimo
Publikováno v:
Sorsimo, A & Heinonen, J 2019, ' Modelling of ice rubble in the punch shear tests with cohesive 3D discrete element method ', Engineering Computations, vol. 36, no. 2, pp. 378-399 . https://doi.org/10.1108/EC-11-2017-0436
PurposeThis paper aims to simulate a punch shear test of partly consolidated ice ridge keel by using a three-dimensional discrete element method. The authors model the contact forces between discrete ice blocks with Hertz–Mindlin contact model. For
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e2c37c9136cb9907c2b6b1725e810d4
https://cris.vtt.fi/en/publications/324fcd5b-5224-4004-afa4-f0aa084559b1
https://cris.vtt.fi/en/publications/324fcd5b-5224-4004-afa4-f0aa084559b1
Publikováno v:
Kinnunen, A, Tikanmäki, M, Heinonen, J & Koskinen, P 2019, ' Dynamic ice contact load model for azimuthing thrusters ', Ships and Offshore Structures, vol. 14, no. 8, pp. 890-898 . https://doi.org/10.1080/17445302.2019.1578098
For ships operating in winter conditions, ice loads are important load scenarios for designing azimuthing main propulsion units. One such contact scenario is ice impacting into an azimuthing thruster. In this paper, the formulation of this type of lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d748af79c0e6afd1ba75dc8ea809defb
https://doi.org/10.1080/17445302.2019.1578098
https://doi.org/10.1080/17445302.2019.1578098
Publikováno v:
Metsätieteen aikakauskirja, Vol 2013, Iss 4 (2014)
Externí odkaz:
https://doaj.org/article/837058507f174ddcbdcba77bb96c2028
Autor:
Dongxia Wu, Pertti Pulkkinen, Ari Pappinen, Ihor Neyko, Gang Zhang, Bao Di, Jaakko Heinonen, Tapani Repo
To avoid the surrounding pollination, seed orchards of Finnish plus trees have been established in Ukraine, i.e. far from their natural distribution. However, it is not known whether the pollination site affects the frost hardiness (FH) of the progen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::770b24b6f954c8f7fbb9e8cb9f10941e
Publikováno v:
Silva Fennica, Vol 47, Iss 4 (2013)
The technical potential of forest chips from final fellings in Central Finland was estimated using a method based on biomass maps derived from a multi-source forest inventory technique. Image segmentation techniques were applied to a satellite image
Externí odkaz:
https://doaj.org/article/776ee557dfd343b690666ada391e1328
Publikováno v:
Tree Physiology. 39:951-960
Ectomycorrhizal trees are common in the cold regions of the world, yet the role of the mycorrhizal symbiosis in plant cold tolerance is poorly known. Moreover, the standard methods for testing plant frost hardiness may not be adequate for roots and m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::030abd1480716c0d7ec387a84e2eb48b
https://doi.org/10.1093/treephys/tpy105
https://doi.org/10.1093/treephys/tpy105
Publikováno v:
Canadian Journal of Forest Research. 48:542-553
Deterministic modelling of roundwood quality with expected values of quality factors underestimates the variation in timber grade distribution and leads to sudden transitions of all of the trees in a size class between the quality classes. We constru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1302578d3db683a174ef203be04c056
https://doi.org/10.1139/cjfr-2017-0435
https://doi.org/10.1139/cjfr-2017-0435
Publikováno v:
Metsätieteen aikakauskirja, Vol 2010, Iss 2 (2010)
Externí odkaz:
https://doaj.org/article/cfe3e3b06b7b495091f2240555dc5bd6