کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10417741 902548 2005 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An experimental study of the nonlinear dynamics of cylindrical shells with clamped ends subjected to axial flow
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
An experimental study of the nonlinear dynamics of cylindrical shells with clamped ends subjected to axial flow
چکیده انگلیسی
This paper presents experimental results on the nonlinear dynamics and stability characteristics of thin-walled clamped-clamped circular cylindrical shells in contact with flowing fluid. The experiments were conducted with three experimental set-ups: one for experiments with elastomer shells in annular air-flow, the second for elastomer shells with internal air-flow, and the last one for aluminium or plastic cylindrical shells with internal water-flow. In all cases the interaction between the shell and the fully developed flow gives rise to instabilities in the form of static or dynamic divergence at sufficiently high flow velocities. The aim of the experimental study was (i) to gather data on the critical flow velocity for instability and on the post-critical flow/displacement-amplitude relationship, and (ii) to undertake an analysis of the experimental results and to compare them qualitatively with theoretical predictions. The experimental results show a softening type nonlinear behaviour, with a large hysteresis in the velocity for the onset and cessation of divergence.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fluids and Structures - Volume 20, Issue 6, August 2005, Pages 801-816
نویسندگان
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