TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Considerations on Features of the Stress Analysis Applied to Taper Pin-Box Shouldered Connections with Special Screw-Thread Profile
(Consideraţii privind particularităţile calculului filetelor asamblărilor cu umăr mufă-cep conice, cu profil generator asimetric)
Vol LXII • No. 4B/2010
Adrian Creiţaru
Universitatea Petrol-Gaze din Ploieşti, Bd. Bucureşti 39, Ploieşti
e-mail: adrian_creitaru@yahoo.com

 Keywords   large diameter drilling, taper shouldered connection, pin-box, special asymmetrical screw-thread profile, multiple start thread.

 Abstract
The taper shouldered connections with special screw-thread profile are practically used on such pin-box joints for large diameter drill stems and bring in some particularities: screw loading line is altered by the tapered shape; asymmetric profile affects the flexural rigidity and stress level; load distribution is obviously uneven.
The multiple start threads bring in a new parameter into account: the load unevenness over each "i" screw start.
This paper proposes the principles of strength calculation of contact, shearing or flexion analyze, for taper pin-box connections. The cases in analyze refer to special threads with asymmetrical screw-thread profile.

 Rezumat
Aceste filete sunt utilizate în construcţia asamblărilor mufă-cep de la garniturile de foraj de diametre mari şi prezintă câteva particularităţi: direcţia de încărcare a spirelor este afectată de conicitate; forma asimetrică influenţează rigiditatea spirei şi nivelul tensiunilor; repartizarea sarcinii pe spire este accentuat neuniformă.
În plus, cazul particular al filetelor cu mai multe începuturi introduce un nou parametru: neuniformitatea repartiţiei sarcinii între începuturi.
Lucrarea prezintă principiile calculului filetelor la solicitările de contact, forfecare şi încovoiere, adaptat pentru asamblările conice cu umăr, de tip mufă-cep. Cazurile analizate se referă la filete de construcţie specială, care au profil generator asimetric.



Journal INFO (ISSN 1224-8495)
Vol LXXI • No. 2/2019
Vol LXXI • No. 1/2019
Vol LXX • No. 4/2018
Vol LXX • No. 3/2018
Vol LXX • No. 2/2018
Vol LXX • No. 1/2018
Vol LXIX • No. 4/2017
Vol LXIX • No. 3/2017
Vol LXIX • No. 2/2017
Vol LXIX • No. 1/2017
Vol LXVIII • No. 4/2016
Vol LXVIII • No. 3/2016
Vol LXVIII • No. 2/2016
Vol LXVIII • No. 1/2016
Vol LXVII • No. 4/2015
Vol LXVII • No. 3/2015
Vol LXVII • No. 2/2015
Vol LXVII • No. 1/2015
Vol LXVI • No. 4/2014
Vol LXVI • No. 3/2014
Vol LXVI • No. 2/2014
Vol LXVI • No. 1/2014
Vol LXV • No. 4/2013
Vol LXV • No. 3/2013
Vol LXV • No. 2/2013
Vol LXV • No. 1/2013
Vol LXIV • No. 4/2012
Vol LXIV • No. 3/2012
Vol LXIV • No. 2/2012
Vol LXIV • No. 1/2012
Vol LXIII • No. 4/2011
Vol LXIII • No. 3/2011
Vol LXIII • No. 2/2011
Vol LXIII • No. 1/2011
Vol LXII • No. 4B/2010
Vol LXII • No. 4A/2010
Vol LXII • No. 3B/2010
Vol LXII • No. 3A/2010
Vol LXII • No. 2/2010 (Special Issue WELDING 2010)
Vol LXII • No. 1/2010
Vol LXI • No. 4/2009
Vol LXI • No. 3/2009 (Special Issue SPC 2009)
Vol LXI • No. 2/2009
Vol LXI • No. 1/2009
Vol LX • No. 4/2008
Vol LX • No. 3/2008
Vol LX • No. 2/2008
Vol LX • No. 1/2008
Vol LIX • No. 4/2007
Vol LIX • No. 3/2007
Vol LIX • No. 2/2007
Vol LIX • No. 1/2007
Vol LVIII • No. 4/2006
Vol LVIII • No. 3/2006
Vol LVIII • No. 2bis/2006
Vol LVIII • No. 2/2006
Signup
Forgot Password
  © copyright 2006 Universitatea Petrol - Gaze din Ploiesti