پیام خود را بنویسید
دوره 7، شماره 13 - ( بهار و تابستان 1390 1390 )                   جلد 7 شماره 13 صفحات 91-83 | برگشت به فهرست نسخه ها

XML English Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Ayatollahi M, Sedighiani K. Effects Of Wind And Wave Loads On Stress Intensity Factors Of A Cracked Offshore Structure . Marine Engineering 2011; 7 (13) :83-91
URL: http://marine-eng.ir/article-1-168-fa.html
آیت اللهی مجیدرضا، صدیقیانی کارو. اثرات بارهای ناشی از موج و باد بر ضرایب شدت تنش یک سازه فراساحلی ترکدار. مهندسی دریا. 1390; 7 (13) :83-91

URL: http://marine-eng.ir/article-1-168-fa.html


1- دانشگاه علم و صنعت ایران
چکیده:   (10610 مشاهده)
Due to the much higher maintenance and replacement expenses of the offshore wind turbine structures, more attention should be paid for a reliable lifetime analysis of them. Meanwhile, the cyclic nature of wave and wind loads together with the corrosive effects from the sea water are major factors for the creation and growth of flaws and cracks in offshore structures. These cracks can be the cause of instantaneous failure in marine structures. The “Tripod” model is one of the favorite support structures which are used for offshore wind turbines particularly in deeper waters. In this paper, a crack is considered in a support structure that can be typically used in the offshore wind turbine constructions. The finite element code ABAQUS is employed to determine the related stress intensity factors for different types of loads. It is shown that the variations of stress intensity factors with crack length differ significantly for various loading types. Also the mode II stress intensity factor is not negligible compared to the mode I stress intensity factor. Therefore, for analyzing the fatigue life or the fracture load of similar cracked offshore structures, appropriate mixed mode crack growth criteria should be employed together with the curves derived in this research for stress intensity factors.
متن کامل [PDF 1411 kb]   (3066 دریافت)    
نوع مطالعه: مقاله پژوهشي | موضوع مقاله: سازه های فراساحلی
دریافت: 1390/11/17 | پذیرش: 1392/7/27

ارسال پیام به نویسنده مسئول


بازنشر اطلاعات
Creative Commons License این مقاله تحت شرایط Creative Commons Attribution-NonCommercial 4.0 International License قابل بازنشر است.

Creative Commons License
International Journal of Maritime Technology is licensed under a

Creative Commons Attribution-NonCommercial 4.0 International License.