Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Bengt Lundberg"'
Autor:
Bengt Lundberg
Publikováno v:
Kulturella Perspektiv, Vol 9, Iss 2 (2000)
This article is about two languages — written stories and the material expressed in museum exhibitions. The tip of the metaphorical iceberg represents what is claimed as an extended now — in other words the present time, and space. Below the surf
Externí odkaz:
https://doaj.org/article/21e0cdb1960146409ec08b9b70c6977e
The effect of pre-impact waves on the coefficient of restitution (COR) in longitudinal impact of a uniform elastic rod on a linear elastic or bilinear inelastic spring supported by a fix rigid wall is studied. The spring models may represent the quas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d922504e2ead6dea739e84da5736072c
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-433107
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-433107
Autor:
Bengt Lundberg, J. Huo
Publikováno v:
International Journal of Impact Engineering. 100:7-12
Because of variability of the force vs. penetration relationship (FPR) from one blow to another in percussive drilling, and difficulty to predict FPRs under such conditions, use is commonly made of simple FPR models, such as the bilinear one defined
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::337890f2335b21e19f1947b06b179c62
https://doi.org/10.1016/j.ijimpeng.2016.10.002
https://doi.org/10.1016/j.ijimpeng.2016.10.002
Autor:
Bengt Lundberg, Pierre Collet
Publikováno v:
International Journal of Impact Engineering. 86:179-187
The problem of finding the optimal incident wave of given duration that maximizes the efficiency of conversion of wave energy into work in percussive drilling with detachable drill bit is considered. The drill rod is modelled as 1D linearly elastic a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c4e382dbc69596b996341f6d4bef54d
https://doi.org/10.1016/j.ijimpeng.2015.06.021
https://doi.org/10.1016/j.ijimpeng.2015.06.021
Publikováno v:
Mechanical Systems and Signal Processing. 40:385-399
For a tube with doubly symmetric cross section and perforations by helical slots there is a coupling between extension and torsion. In this paper a one dimensional (1D) model structure for a tube w ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b7c24c090764ad3d7cea683842772e7
https://doi.org/10.1016/j.ymssp.2013.04.011
https://doi.org/10.1016/j.ymssp.2013.04.011
Publikováno v:
International Journal of Impact Engineering. :35-45
Simulations have been performed to evaluate the possibility of reproducing the fragmentation of a long-rod projectile impacted by a moving oblique plate. When the moving plate slides along the proj ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90f3b8bc1f217740da61342161ba4e0b
https://doi.org/10.1016/j.ijimpeng.2011.09.003
https://doi.org/10.1016/j.ijimpeng.2011.09.003
Publikováno v:
International Journal of Impact Engineering. 38:989-1000
The influence of projectile length to diameter ratio (15, 30 and 45), plate thickness (0.5, 1 and 2 projectile diameters), projectile velocity (1500, 2000 and 2500 m/s) and plate velocity (−300 to ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::877524973ea57b06eafd60ddb8e4f204
https://doi.org/10.1016/j.ijimpeng.2011.07.002
https://doi.org/10.1016/j.ijimpeng.2011.07.002
Autor:
Bengt Lundberg, Pierre Collet
Publikováno v:
International Journal of Impact Engineering. 37:901-906
The problem considered is that of finding the optimum wave of given finite duration that maximizes the efficiency of conversion of wave energy into work in percussive drilling with integral drill steel (drill rod with integrated bit). A 1D model is u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c810054f3be9626951d2c12f67f64202
https://doi.org/10.1016/j.ijimpeng.2010.02.001
https://doi.org/10.1016/j.ijimpeng.2010.02.001
Publikováno v:
Sensors and Actuators A: Physical. 157:198-209
Piezoelectric multilayer cantilever beams were considered with the aim to establish a simple but general theoretical model, fabricate such beams by a procedure suitable for devices on millimetre scale such as actuators, and study their quasi-static a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a51efb65a66e2dc4a21df480343104d1
https://doi.org/10.1016/j.sna.2009.11.013
https://doi.org/10.1016/j.sna.2009.11.013
Autor:
Anders Jansson, Bengt Lundberg
Publikováno v:
Journal of Sound and Vibration. 326:213-220
Generation of extensional waves in a linearly elastic bar by means of a pair of attached piezoelectric actuators driven by a power amplifier with output current constraints is studied theoretically and experimentally. In addition to its current const
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10b3570ba7b9eae672ca81818f4b9888
https://doi.org/10.1016/j.jsv.2009.04.017
https://doi.org/10.1016/j.jsv.2009.04.017