کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
782610 1465027 2011 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of riveting process parameters on the local stress field of a T-joint
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Effect of riveting process parameters on the local stress field of a T-joint
چکیده انگلیسی

Rotorcraft airframes are complex structures designed to satisfy different goals; fatigue life represents one of the most critical issues, which must be guaranteed throughout the design and the construction phase. In this scenario riveted joints play an important structural role especially because of the variable loads they are subjected to. Their fatigue behaviour is strictly influenced by the local stress fields left very near to the holes during riveting manufacturing operations. Therefore, with the aim to improve design awareness, the effects of the different parameters involved during the riveting process are herein investigated. The effects of the squeeze force, the clearance, the rivet length and the clamping angle in the stress field of the joints are considered by means of numerical models. Detailed finite elements models (including rivet forming formation) are validated through experimental tests. These models are aimed at obtaining an accurate stress–strain field in the most stressed zone including the residual stress in the holes. Finally, using the literature fatigue data of Al8090-T81 and the Crossland multiaxial fatigue criterion, the influence of the riveting parameters on the fatigue strength is evaluated for optimisation purposes.


► Fatigue life represents one of the most critical issues for rotorcraft airframes. In this scenario riveted joints play an important structural role especially because of the variable loads they are subjected to.
► Fatigue behaviour of riveted joints is strictly influenced by the local stress fields left very near the holes during riveting manufacturing operations.
► Different parameters involved during the riveting process are herein investigated. The effects of the squeeze force, the clearance, the rivet length and the clamping angle in the stress field of the joints are considered by means of numerical models.
► Using the literature fatigue data of Al8090-T81 and the Crossland multiaxial fatigue criterion, the influence of the riveting parameters on the fatigue strength is evaluated for optimisation purposes.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mechanical Sciences - Volume 53, Issue 12, December 2011, Pages 1039–1049
نویسندگان
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