تحليل ارتعاش غيرخطي ورق ذوزنقه اي در جريان مافوق صوت

كامل ترين مدل براي تحليل سلزه ها از مدل سه بعدي الاستيسيته و بررسي روابط در اين حالت مي باشد، ولي با توجه به پيچيدگي هاي موجود در اين نوع مدلسازي در اكثر موارد به منظور تحليل سازه ها از مدل ساده تر مانند مدل دوبعدي( ورق ها) و يا در حالت ساده تر يك بعدي(تيرها) استفاده مي شود. با كاهش مساله تحليل ساده تر و از طرفي دقت نتايج كاهش مي يابد.

In fact, the most complete model for structural analysis is three-dimensional elasticity model. But because of the complexities involved in this type of modeling, in most cases, of simpler models such as the two-dimensional model (sheets) or in simpler model of one-dimensional (beam) are used to analyes the structures. By reducing the scale of the problem, the analysis would be easier and the accuracy of the results is also reduced. In this study, nonlinear vibrations of a trapezoid-shaped plate as a that very simple model of aircraft wing in supersonic flow were investigated. Thin plate as it was assumed that large amplitude displacements were leading to non-linear relations also for modeling the effects of supersonic flow , the first order piston theory was used. The effect of geometrical parameters in response vibrating plate system was tested in specific situations (such as rectangular plate) were compared with results.