پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 11 |
| تعداد شماره‌ها | 210 |
| تعداد مقالات | 2,101 |
| تعداد مشاهده مقاله | 2,882,721 |
| تعداد دریافت فایل اصل مقاله | 2,089,824 |
Effect of shell axial deformation on flutter of cantilevered cylindrical shells under follower forces | ||
| Journal of Computational & Applied Research in Mechanical Engineering (JCARME) | ||
| مقاله 2، دوره 2، شماره 1، اسفند 2012، صفحه 15-24 اصل مقاله (622.99 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22061/jcarme.2012.38 | ||
| نویسندگان | ||
| Mohammad Ebrahim Torki Harchegani؛ Mohammad Taghi Kazemi | ||
| Department of Civil Engineering, Sharif University of Technology, Tehran, Islamic Republic of Iran, zip code: 1136511155 | ||
| تاریخ دریافت: 27 آبان 1390، تاریخ بازنگری: 14 فروردین 1391، تاریخ پذیرش: 16 فروردین 1391 | ||
| چکیده | ||
| Axial vibration effect of shell particles on dynamic stability of a cantilevered cylindrical shell under an axial follower force was addressed. In spite of free-ended shells, the reduced axial force under this effect cannot be derived analytically. Instead, an approximate method was proposed based on the fact that the static (and harmonic) axial deformation under an axial load in a free-ended beam are (almost) zero in a particular point near the middle of the beam, which was adopted as the equivalent fixed end of a cantilever. The work done by the nonconservative follower force was derived for a cantilevered beam and was extended to the case of a cantilevered cylindrical shell. The flutter load for a long free-ended shell was calculated using the equivalent cantilevered half-shell and compared with the previous results. Then, flutter load was calculated with and without the axial vibration effect for cantilevered shells with different lengths and thicknesses and the effect of each parameter was assessed on the flutter load and the critical circumferential mode number in each case. | ||
| کلیدواژه‌ها | ||
| Axial follower force؛ Flutter؛ Cantilevered cylindrical shell؛ Circumferential mode number | ||
| مراجع | ||
|
[1] Elfesoufi and L. Azrar, “Buckling, Flutter and Vibration Analysis of Beams by Integral Equation Formulations”, Journal of Computers and Structures, Vol. 83, pp. 2632–2649, (2005).
[2] H. Park and J. H. Kim, “Dynamic Stability of a Completely Free Circular Cylindrical Shell Subjected to a Follower Force”, Journal of Sound and Vibration, Vol. 231, No. 4, pp. 989‒1005, (2000).
[3] E. Simkins and G. L. Anderson, “Stability of Beck's Column Considering Support Characteristics”, Journal of Sound and Vibration, Vol. 39, No. 3, pp. 359‒369, (1975).
[4] P. Seyranian and I. Elishakoff, Modern problems of structural stability, International Centre for Mechanical Sciences, Springer-Verlag, Wien, New York, (2002).
[5] J. Simitses and D. H. Hodges, Fundamentals of Structural Stability, Elsevier, Burlington, (2006).
[6] Altman and M. G. De Oliviera, “Vibration and Stability of Cantilevered Cylindrical Shell Panels under Follower Forces”, Journal of Sound and Vibration, Vol. 122, No. 2, pp. 291‒298, (1988).
[7] Altman and M. G. De Oliviera, “Vibration and Stability of Shell Panels with Slight Internal Damping under Follower Forces”, Journal of Sound and Vibration, Vol. 136, No. l, pp. 45‒50, (1990).
[8] N. Bismarck Nasr, “Dynamic Stability of Shallow Shells Subjected to Follower Forces”, AIAA Journal, Vol. 33, No. 2, pp. 355–360, (1995).
[9] W. Jung, K. S. Na, and J. H. Kim, “Dynamic Stability of Liquid-Filled Projectiles under a Thrust”, Journal of Sound and Vibration, Vol. 280, pp. 611–631, (2005).
[10] N. Reddy, Theory and Analysis of Elastic Plates and Shells, CRC Press, Taylor and Francis Group, New York, (2007).
[11] Meirovitch, Analytical Methods in Vibrations, The MacMillan Company, New York, (1967). | ||
|
آمار تعداد مشاهده مقاله: 2,510 تعداد دریافت فایل اصل مقاله: 1,263 |
||