کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
775394 898320 2010 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of constant axial compression pre-stress on the fatigue failure of torsion loaded tube springs
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
The influence of constant axial compression pre-stress on the fatigue failure of torsion loaded tube springs
چکیده انگلیسی

This paper reports the results of a series of biaxial static compression and torsion experiments performed to evaluate the effects of static compression stress on the fatigue life those smooth tubes made of high strength spring steel. Compression pre-stress was introduced by a solid steel bar inserted into a hollow spring and loaded with a screw-joint. The experimentally obtained results show a significant extension of fatigue strain life as a result of combining axial compression loading with torsion. Cracking behavior was observed and it was noted that compression pre-stresses contribute to retardation of the fatigue crack initiation process and, consequently, contribute to the extension of fatigue life. The fatigue shear crack initiated in a transverse direction. This crack continues to propagate in the same direction until it starts to propagate as a macro-crack on the maximum shear plane.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Fracture Mechanics - Volume 77, Issue 16, November 2010, Pages 3132–3142
نویسندگان
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