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A platform for research: civil engineering, architecture and urbanism
Nonlinear forced vibration of sandwich cylindrical panel with negative Poisson’s ratio auxetic honeycombs core and CNTRC face sheets
https://orcid.org/0000-0001-8680-7478
https://orcid.org/0000-0002-1125-2997
https://orcid.org/0000-0003-2656-7497
Abstract Recently, auxetic cellular solids in the forms of honeycombs and carbon nanotube reinforced composite (CNTRC) have great potential in a diverse range of applications. This paper studies the nonlinear free and forced vibration of sandwich cylindrical panel on visco-Pasternak foundations in thermal environment subjected to blast load The sandwich cylindrical panel consists of auxetic honeycombs core layer and two CNTRC face sheets. The Poisson’ ratio of the auxetic core is negative and the material properties of CNTRC face sheets are assumed to continuously vary in the thickness direction according to four different types of linear functions. The blast load is determined from the distance of the center of blast to center of the structure and the mass of explosive materials. The fundamental equations are established based on Reddy’s higher order shear deformation shell theory taking into account the effect of initial imperfection and visco-Pasternak foundations. The Galerkin and Runge–Kutta methods are used to obtain the nonlinear dynamic response and the natural frequency of the sandwich cylindrical panel. The numerical results show the effect of geometrical parameters, visco foundations, initial imperfection, temperature increment, nanotube volume fraction and blast load on the nonlinear vibration characteristics of the sandwich cylindrical panel. The accuracy of present approach and theoretical results is verified by some comparisons with the known data in the literature.
Highlights Nonlinear forced vibration. Sandwich cylindrical panel with negative Poisson’s ratio auxetic honeycombs core and CNTRC face sheets. Using Redyy’s higher-order shear deformation shell theory. Galerkin’s method and Runge–Kutta method are applied. Taking into account the effect of initial imperfection and visco-Pasternak foundations.
Nonlinear forced vibration of sandwich cylindrical panel with negative Poisson’s ratio auxetic honeycombs core and CNTRC face sheets
https://orcid.org/0000-0001-8680-7478
https://orcid.org/0000-0002-1125-2997
https://orcid.org/0000-0003-2656-7497
Abstract Recently, auxetic cellular solids in the forms of honeycombs and carbon nanotube reinforced composite (CNTRC) have great potential in a diverse range of applications. This paper studies the nonlinear free and forced vibration of sandwich cylindrical panel on visco-Pasternak foundations in thermal environment subjected to blast load The sandwich cylindrical panel consists of auxetic honeycombs core layer and two CNTRC face sheets. The Poisson’ ratio of the auxetic core is negative and the material properties of CNTRC face sheets are assumed to continuously vary in the thickness direction according to four different types of linear functions. The blast load is determined from the distance of the center of blast to center of the structure and the mass of explosive materials. The fundamental equations are established based on Reddy’s higher order shear deformation shell theory taking into account the effect of initial imperfection and visco-Pasternak foundations. The Galerkin and Runge–Kutta methods are used to obtain the nonlinear dynamic response and the natural frequency of the sandwich cylindrical panel. The numerical results show the effect of geometrical parameters, visco foundations, initial imperfection, temperature increment, nanotube volume fraction and blast load on the nonlinear vibration characteristics of the sandwich cylindrical panel. The accuracy of present approach and theoretical results is verified by some comparisons with the known data in the literature.
Highlights Nonlinear forced vibration. Sandwich cylindrical panel with negative Poisson’s ratio auxetic honeycombs core and CNTRC face sheets. Using Redyy’s higher-order shear deformation shell theory. Galerkin’s method and Runge–Kutta method are applied. Taking into account the effect of initial imperfection and visco-Pasternak foundations.
Nonlinear forced vibration of sandwich cylindrical panel with negative Poisson’s ratio auxetic honeycombs core and CNTRC face sheets
https://orcid.org/0000-0001-8680-7478
https://orcid.org/0000-0002-1125-2997
https://orcid.org/0000-0003-2656-7497
Abstract Recently, auxetic cellular solids in the forms of honeycombs and carbon nanotube reinforced composite (CNTRC) have great potential in a diverse range of applications. This paper studies the nonlinear free and forced vibration of sandwich cylindrical panel on visco-Pasternak foundations in thermal environment subjected to blast load The sandwich cylindrical panel consists of auxetic honeycombs core layer and two CNTRC face sheets. The Poisson’ ratio of the auxetic core is negative and the material properties of CNTRC face sheets are assumed to continuously vary in the thickness direction according to four different types of linear functions. The blast load is determined from the distance of the center of blast to center of the structure and the mass of explosive materials. The fundamental equations are established based on Reddy’s higher order shear deformation shell theory taking into account the effect of initial imperfection and visco-Pasternak foundations. The Galerkin and Runge–Kutta methods are used to obtain the nonlinear dynamic response and the natural frequency of the sandwich cylindrical panel. The numerical results show the effect of geometrical parameters, visco foundations, initial imperfection, temperature increment, nanotube volume fraction and blast load on the nonlinear vibration characteristics of the sandwich cylindrical panel. The accuracy of present approach and theoretical results is verified by some comparisons with the known data in the literature.
Highlights Nonlinear forced vibration. Sandwich cylindrical panel with negative Poisson’s ratio auxetic honeycombs core and CNTRC face sheets. Using Redyy’s higher-order shear deformation shell theory. Galerkin’s method and Runge–Kutta method are applied. Taking into account the effect of initial imperfection and visco-Pasternak foundations.
Nonlinear forced vibration of sandwich cylindrical panel with negative Poisson’s ratio auxetic honeycombs core and CNTRC face sheets
Van Quyen, Nguyen (author) / Van Thanh, Nguyen (author) / Quan, Tran Quoc (author) / Duc, Nguyen Dinh (author)
Thin-Walled Structures ; 162
2021-02-12
Article (Journal)
Electronic Resource
English
Thermal post-buckling of temperature dependent sandwich plates with FG-CNTRC face sheets
| British Library Online Contents | 2018