Kirişlerdeki büyük yer değiştirmeler üzerine bazı yeni çözümler
Some new solutions on large deflections of beams
- Tez No: 201190
- Danışmanlar: PROF. DR. UĞUR GÜVEN
- Tez Türü: Doktora
- Konular: Makine Mühendisliği, Mechanical Engineering
- Anahtar Kelimeler: Large deflections, material nonlinearity, geometrical nonlinearity, composite beams, bimodulus beams
- Yıl: 2006
- Dil: Türkçe
- Üniversite: Yıldız Teknik Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Makine Mühendisliği Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 182
Özet
Özet yok.
Özet (Çeviri)
Large deflections which become under various loading on bearer systems are well known and there are many researches on this subject. Since this subject is very important, related studies are going on currently. The obtained results by linearization can be sufficient in many cases of the engineering fields. However, the well known curvature relation of elastic curve is not linear and as that of real material?s stress-strain relation. Taking this fact into consideration, large deflections cannot be analyzed by analytic methods all the times. When this is the case, approximate and numerical methods should be used. In this thesis, weighted residual and Runge-Kutta methods are mostly used. Both material and geometrical nonlinearity are investigated jointly in most of the sections of the thesis. The introduction part of the thesis includes the state of the art, the aim of this research and the contribution to literature. In section 2, Firstly, the relation of stress-strain of beam material is assumed as Ludwick type and then large deflections of cantilever beam which is subjected to moment at the free end are calculated. Then the same process is applied to the type of cubical and logarithmic stressstrain relations. In section 3, the large deflections of the cantilever beam which is subjected to concentrated load at the free end are calculated using different methods and finally, the compared results are presented. In sections 4 and 5, the large deflections of the uniform distributed loaded simple beams and combined loaded cantilever beams are calculated by numerical methods using curvaturemoment equations which are obtained by assuming different arc lengths. In sections 6 and 7, composite beams are investigated. In section 6, composite cantilever beams which is subjected to concentrated load for only geometrical non-linearity is considered. In section 7, for both non-linearity, the large deflections of the composite cantilever beams which is subjected to moment at the free end are calculated for Ludwick, cubical, and logarithmic types of stress-strain relations. In section 8, the large deflections of the non-linear bimodulus cantilever beam which is subjected to moment at the free end are investigated for cubical and logarithmic materials. Afterward, the large deflections of the linear bimodulus cantilever beam which is subjected to concentrated load at the free end or subjected to combined load are calculated by assuming different arc length. The same process is applied to uniform distributed loaded linear bimodulus simple beams and obtained results for each cases are presented in the tables. In this thesis, simple and understandable solutions have been proposed instead of known complex solutions from the previous studies in this area. Also, some new solutions have been presented for less encountered composite and bimodulus beams.
Benzer Tezler
- Yeni Cami'nin akustik açıdan performans değerlendirmesi
Evaluation of the acoustical performance of the New Mosque
EVREN YILDIRIM
Yüksek Lisans
Türkçe
2003
Mimarlıkİstanbul Teknik ÜniversitesiMimarlık Ana Bilim Dalı
PROF. DR. SEVTAP YILMAZ DEMİRKALE
- Large deflections of non-linear bi-modulus functionally graded beams under different boundary and loading conditions
Doğrusal olmayan çift modüllü fonksiyonel derecelendirilmiş kirişlerin farklı sınır koşulları ve yüklemeler altındaki büyük yer değiştirmeleri
AYHAN HACIOĞLU
Doktora
İngilizce
2023
Makine Mühendisliğiİstanbul Teknik ÜniversitesiMakine Mühendisliği Ana Bilim Dalı
PROF. DR. CEMAL BAYKARA
- Nanoçubuklarda büyük yer değiştirme ve yerel olmayan elastisite teorilerine göre deplasman hesabı
Calculation of displacements of nanorods according to nonlocal theory of elasticity and large displacement theory
GÖKHAN GÜÇLÜ
Doktora
Türkçe
2020
Matematikİstanbul Teknik Üniversitesiİnşaat Mühendisliği Ana Bilim Dalı
PROF. DR. REHA ARTAN
- Improvement of the cyclic flexural capacity of RC columns with FRP reinforcement
Lifli polimer donatılar kullanılarak betonarme kolonların çevrimsel yükler altında eğilme kapasitelerinin artırılması
ENGİN CÜNEYT SEYHAN
Doktora
İngilizce
2016
İnşaat Mühendisliğiİstanbul Teknik Üniversitesiİnşaat Mühendisliği Ana Bilim Dalı
PROF. DR. ALPER İLKİ
- Deprem etkisindeki çerçeve yapıların tasarımında eşdeğer deprem yükü yönteminin güvenilirliği
Reliability of the equivalent earthquake load method for design of framed structures under seismic load
MEDİNE İSPİR