Abstract
Bu çalışmada, kimyevi gübre üretim prosesinde yer alan bir kurutucu döner tamburun civatalı flanş bağlantı bölgelerinde meydana gelen çatlama probleminin kök nedeni, sonlu elemanlar metodu kullanılarak irdelenmiştir. Yapılan incelemelerde, şekil bağlantısından dolayı gerilme yığılmasının meydana geldiği ve bu yığılmadan dolayı ortaya çıkan ortalama gerilmenin yorulma dayanımını düşürdüğü tespit edilmiştir. Malzemenin Wöhler eğrisi hazırlandıktan sonra, Gerber ve Goodman teorileri baz alınarak yorulma ömrü hesaplanmıştır. Sınırlı ömre sahip olduğu tespit edilen şekil bağlantısı yerine, manto takviyeli alın kaynak bağlantısı, model üzerinde geliştirilmiş ve analizler tekrar edilmiştir. Yapılan incelemelerde, bağlantı dizaynının revize edilmesi ile, gerilme yığılmasının ve yorulma çatlaklarının önlenebileceği tespit edilmiştir.
References
- Al-Bahkali, E., 2007, Mechanical Engineering Design Lecture Note, Third Edition, King Saud University, Saudi Arabia.
- Boardman, B., 1990, Fatigue Resistance of Steels, ASM Handbook, Volume 1, pp. 673-688.
- Browell, R., 2006,Calculating and Displaying Fatigue Results, www.ozeninc.com, ANSYS Workbench 11 Tutorial.
- Haghighi, 2005, Performing a Fatigue Analysis, ANSYS Tutorial, https://engineering.purdue.edu, ziyaret tarihi: 15 Ocak 2013.
- Imaoka, S., 2008, Using New Meshing Features in ANSYS Workbench Simulation, ANSYS Advantage, Volume 2, Issue 2.
- Marudachalam, D., Kanthavel, K. and Krishnaraj, R., 2011, Optimization of Shaft Design Under Fatigue Loading Using Goodman Method, International Journal of Scientific & Engineering Research, Volume 2, Issue 8.
- Sharcnet, Ansys 13 Dökümantasyonu, http://www.sharcnet.ca, ziyaret tarihi: 30 Mart 2013.
- The IIT Kharagpur, Design for Dynamic Loading, http://nptel.iitm.ac.in, ziyaret tarihi: 15 Aralık 2012.
- Wang, E., 2006, Thin Wall Structure Simulation, International ANSYS Conference, Almanya.
Abstract
In this study, the crack growth problem occuring on the bolted flange connections of a rotary dryer which is in the process of fertilizer production was investigated using finite elements method. At the end of the analyses, it was determined that the bolted flange connection type is the cause of stress concentration effect and this type of connection had an average stress which lowered the endurance limit. After preparing the Wöhler curve, fatigue life was calculated on the basis of theories of Goodman and Gerber. Instead of bolted flange connection type, mantle reinforced butt welding connection was developed and adapted on the dryer and stress analyses were repeated. It was observed that stress concentration and fatigue cracking problem could be prevented with the revision of the connection design.
References
- Al-Bahkali, E., 2007, Mechanical Engineering Design Lecture Note, Third Edition, King Saud University, Saudi Arabia.
- Boardman, B., 1990, Fatigue Resistance of Steels, ASM Handbook, Volume 1, pp. 673-688.
- Browell, R., 2006,Calculating and Displaying Fatigue Results, www.ozeninc.com, ANSYS Workbench 11 Tutorial.
- Haghighi, 2005, Performing a Fatigue Analysis, ANSYS Tutorial, https://engineering.purdue.edu, ziyaret tarihi: 15 Ocak 2013.
- Imaoka, S., 2008, Using New Meshing Features in ANSYS Workbench Simulation, ANSYS Advantage, Volume 2, Issue 2.
- Marudachalam, D., Kanthavel, K. and Krishnaraj, R., 2011, Optimization of Shaft Design Under Fatigue Loading Using Goodman Method, International Journal of Scientific & Engineering Research, Volume 2, Issue 8.
- Sharcnet, Ansys 13 Dökümantasyonu, http://www.sharcnet.ca, ziyaret tarihi: 30 Mart 2013.
- The IIT Kharagpur, Design for Dynamic Loading, http://nptel.iitm.ac.in, ziyaret tarihi: 15 Aralık 2012.
- Wang, E., 2006, Thin Wall Structure Simulation, International ANSYS Conference, Almanya.
Details
| Other ID | JA47DH38RY |
|---|---|
| Journal Section | Articles |
| Authors | |
| Publication Date | June 1, 2013 |
| Published in Issue | Year 2013 Volume: 1 Issue: 2 |