فصلنامه
نوع مقاله : مقاله پژوهشی
نویسندگان
منهدسی مکانیک، مجتمع مکانیک، دانشگاه صنعتی مالک اشتر، اصفهان. ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
This paper investigates the effect of aerodynamic damping on the flutter threshold of a rectangular aluminum sheet in supersonic flow. Using matrix form of DQM and the first-order piston theory, this paper increses the accuracy and speed of the solution. Using the difference of squares method (DQM), two different scenarios of the first-order piston theory are analyzed: a simplified case without damping and a full case with damping. The results show that the flutter threshold occurs at Mach 3.395 in both cases, indicating that aerodynamic damping has no effect on the flutter velocity. This finding is confirmed by parametric sensitivity analysis. Accordingly, the simplified formulation of the piston theory is proposed as a computational basis for future studies. This method has computational advantages such as reduced computational time and is suitable for practical applications in the design of aerospace panels. this method can be a benchmark for future flutter researches.
کلیدواژهها English
