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| 1 | Nonlinear transverse vibrations of a slightly curved beam carrying a concentrated mass显示文摘In this study, a slightly curved Euler Bernoullibeam carrying a concentrated mass was handled. The beamwas resting on an elastic foundation and simply supportedat both ends. Effects of the concentrated mass on nonlinearvibrations were investigated. Sinusoidal and parabolictype functions were used as curvature functions. Equationsof motion have cubic nonlinearities because of elongationsduring vibrations. Damping and harmonic excitationterms were added to the equations of motion. Method of multiplescales, a perturbation technique, was used for solvingintegro-differential equation analytically. Natural frequencieswere calculated exactly for different mass ratios, masslocations, curvature functions, and linear elastic foundationcoefficients. Amplitude-phase modulation equations werefound by considering primary resonance case. Effects ofnonlinear terms on natural frequencies were calculated.Frequency-amplitude and frequency-response graphs wereplotted. Finally effects of concentrated mass and chosen curvaturefunction on nonlinear vibrations were investigated. | E.zkaya M.Sarigül H.Boyaci | 2009 | Acta Mechanica Sinica2009，25，6： | 5 |
| 2 | Three-to-one internal resonance in multiple stepped beam systems显示文摘In this study, the vibrations of multiple stepped beams with cubic nonlinearities are considered. A three-to-one internal resonance case is investigated for the system. A general approximate solution to the problem is found using the method of multiple scales (a perturbation technique). The modulation equations of the amplitudes and the phases are derived for two modes. These equations are utilized to determine steady state solutions and their stabilities. It is assumed that the external forcing frequency is close to the lower frequency. For the numeric part of the study, the three-to-one ratio in natural frequencies is investigated. These values are observed to be between the first and second natural frequencies in the cases of the clamped-clamped and clamped-pinned supports, and between the second and third natural frequencies in the case of the pinned-pinned support. Finally, a numeric algorithm is used to solve the three-to-one internal resonance. The first mode is externally excited for the clamped-clamped and clamped-pinned sup- ports, and the second mode is externally excited for the pinned-pinned support. Then, the amplitudes of the first and second modes are investigated when the first mode is externally excited. The amplitudes of the second and third modes are investigated when the second mode is externally excited. The force-response, damping-response, and frequencyresponse curves are plotted for the internal resonance modes of vibrations. The stability analysis is carried out for these plots. | A. Tekin E. zkaya S. M. Bagdatlh | 2009 | Applied Mathematics and Mechanics(English Edition)2009，30，9： | 3 |
| 3 | Comparative analysis of the nail xenografts with cartilage autografts in eyelid reconstruction显示文摘 | (O)zkaya (O) Kar(s)idag S Egemen O | | 0，，： | 1 |
| 4 | Non-linear transverse vibrations of a simply supported beam carrying concentrated masses显示文摘 | Zkaya E O | 2002 | Journal of Sound and Vibration2002，257，3： | 1 |
| 5 | R~D Team's Competencies, Innovation, and Growth With Knowledge Information Flow显示文摘 | ZKAYA A | 2013 | En- gineering Management2013，3，57： | 1 |
| 6 | Effects of multivitamin/ mineral supplementation on trace element levels in serum and follicular fluid of women undergoing in vitro fertilization (IVF)显示文摘 | ?zkaya MO Naziroglu M Barak C | 2011 | Biol Trace Elem Res2011，139，1： | 1 |
| 7 | An Unusual recurrent bilateral posterior mediastinal goiter after subtotal thyroidectomy: Case report显示文摘 | Mehmet Aziret Mehmet ?ah Top?uo?lu Cemal ?z?elik Muharrem ?zkaya | 2014 | International Journal of Surgery Case Reports2014，，： | 1 |
| 8 | Follicular traction urticarial显示文摘 | (O)zkaya E Yazgano(g)lu KD | | 0，，05： | 1 |
| 9 | Influence of Leachate Re-circulation on Aerobic and Anaerobic Decomposition of Solid Wastes显示文摘 | BILGILI M S DEMIR A (O)ZKAYA B | 2007 | Journal of Hazardous Materials2007，143，12： | 1 |
| 10 | Influence of leachate recirculation on aerobic and anaerobic decomposition of solid wastes显示文摘 | Bilgili M S Demir A Zkaya B | 2007 | Journal of Hazardous Materials2007，143，12： | 1 |
| 11 | Effect of leachate recirculation on refuse decomposition rates at landfill site:a case study显示文摘 | Demir A Bilgili M S Zkaya B O | 2004 | Int J Environ Pollut2004，21，2： | 1 |
| 12 | Effects of recirculation on leachate characteristics at landfills显示文摘 | Bilgili M S Demir A Zkaya B O | 2004 | Fresen Environ Bull2004，13，10： | 1 |
| 13 | Comparison of the effects of surgical and natural menopause on carotid intima media thickness,osteoporosis,and homocysteine levels显示文摘 | Zkaya E Cakir E Okuyan E | | 0，，： | 1 |
| 14 | Reconstructive procedure of lower lip defect due to ecthyma gangrenosum-a rare complication of acute lymphoblastic leukemia显示文摘 | ?zkaya? üsc etin Egemen O | 2012 | J Craniofac Surg2012，23，3： | 1 |
| 15 | Leptin levels in Henoch-Schonlein purpura显示文摘 | Aliyazicioglu Y Zkaya O Yakut H | 2007 | Clin Rheumatol2007，26，3： | 1 |
| 16 | The Effect of Antithyroid Treatment on Atrial Conduction Times in Patients with Subclinical Hyperthyroidism显示文摘 | Alper Bu?ra Nacar Gürkan Acar Hikmet Yorgun Ahmet Ak?ay Mesut ?zkaya U?ur Canpolat Murat Akkoyun Cemal Tuncer | 2012 | Echocardiography2012，，8： | 1 |
| 17 | Potential use of exogenous lipases for DATEM replacement to modify the rheological and thermal properties of wheat flour dough显示文摘 | Abdullah S.Colakoglu Hazim (O)zkaya | | 0，，03： | 1 |
| 18 | Group — theoretic approach to axially accelerating beam problem显示文摘 | E. ?zkaya M. Pakdemirli | 2002 | Acta Mechanica (-)2002，，1： | 1 |
| 19 | Size and crystallinity-dependent magnetic properties of CoFe2O4 nanocrystals显示文摘 | (O)zkaya T Baykal A Toprak M S | | 0，，03： | 1 |
| 20 | Influence of leachate recirculation on aerobic and anaerobic decomposition of solid wastes显示文摘 | BILGILI M S DEMIR A ?ZKAYA B | 2007 | Journal of Hazardous Materials2007，145，： | 1 |
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