نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه تبدیل و ذخیره انرژی، پژوهشکده انرژی، پژوهشگاه مواد و انرژی، کرج
2 دانشکده مکانیک، دانشگاه علم و صنعت ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this research, the dynamic response and vibration control of a sandwich piezoelectric cylindrical shell buried in an elastic medium under the effect of a moving ring load has been investigated. First, the dynamic equations of the shell are obtained based on Love's thin-walled shell theory, and then they are coupled with the governing equations of the surrounding elastic medium. Then, the resulting differential equations are solved using the Fourier transform, and after using Gauss's numerical integral for the inverse Fourier transform, the steady state dynamic response of the system is obtained. To reduce the vibrations caused by the moving load, a PID controller with optimized constants has been used. With extensive research done, the innovation presented in this research is the active reduction of the level of vibrations of a smart buried shell (pipe, tunnel) under the effect of a moving applied load. In a way, this innovation is at the same time being buried in the unlimited elastic environment and the piezoelectricity of the shell. The results show that the implemented controller is able to reduce the displacement range and stress in the system. Also, the operation of the piezoelectric active layer based on the appropriate controller reduces the sensitivity of the system to parameter changes.
کلیدواژهها [English]
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