The generalized ray method(GRM) has been successfully used to study the transient elastic wave transmitting in the beams,planar trusses,space frames and infinite layered media.In this letter,the GRM is extended to inv...The generalized ray method(GRM) has been successfully used to study the transient elastic wave transmitting in the beams,planar trusses,space frames and infinite layered media.In this letter,the GRM is extended to investigate the early short time transient responses of laminated composite cylindrical shells under impact load.By using the Laplace transformation and referring to the boundary conditions,the ray groups transmitting in the finite laminated cylindrical shells under the shock load are obtained and the transient response related to each ray group can be derived via FFT algorithm.From the numerical results,it is shown that the early short time transient accelerations of the laminated composite cylindrical shell under impact loads are very large.But the short time transient shear strain and displacement are very small.展开更多
Following Love's shell theory and classical lamination theory, governing equation of composite cylindrical shell in the axisymmetric deformation was established with radial displacements expressed in terms of Four...Following Love's shell theory and classical lamination theory, governing equation of composite cylindrical shell in the axisymmetric deformation was established with radial displacements expressed in terms of Fourier series, and numerical results given for axial impact response of laminated shell with simple support will be used to further study of dynamic stability of composite shell.展开更多
基金supported by the National Basic Research Program of China(2011CB711102)the National Natural Science Foundation of China(10672017)
文摘The generalized ray method(GRM) has been successfully used to study the transient elastic wave transmitting in the beams,planar trusses,space frames and infinite layered media.In this letter,the GRM is extended to investigate the early short time transient responses of laminated composite cylindrical shells under impact load.By using the Laplace transformation and referring to the boundary conditions,the ray groups transmitting in the finite laminated cylindrical shells under the shock load are obtained and the transient response related to each ray group can be derived via FFT algorithm.From the numerical results,it is shown that the early short time transient accelerations of the laminated composite cylindrical shell under impact loads are very large.But the short time transient shear strain and displacement are very small.
文摘Following Love's shell theory and classical lamination theory, governing equation of composite cylindrical shell in the axisymmetric deformation was established with radial displacements expressed in terms of Fourier series, and numerical results given for axial impact response of laminated shell with simple support will be used to further study of dynamic stability of composite shell.
