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Buckling resistance of joined composite sandwich conical–cylindrical shells with lattice core under lateral pressure
https://orcid.org/0000-0002-5665-9547
Abstract The main impetus of the present study is to investigate the buckling analysis of joined composite sandwich conical–cylindrical shells with reinforced lattice core subjected to external pressure via numerical and analytical approaches. The equivalent stiffness parameters of the lattice core have been determined by using an effective smeared technique and then superimposed with those of the skins in order to achieve the stiffness parameters of the whole structure. The theoretical formulation has been established based on the first-shear deformation theory and applying continuity conditions. Using power series technique, a highly accurate solution has been provided for evaluating the buckling load of the sandwich conical–cylindrical shells. The sandwich structures are made of two skins (inner and outer) and a middle lattice core composed of helical stiffeners. In addition, finite element analysis has been performed for validating the analytical model. Furthermore, the influences of several important design variables on the buckling characteristics have been investigated.
Highlights The buckling analysis of joined composite sandwich conical–cylindrical shells subjected to external pressure was studied. An effective mathematical model was used to obtain the equivalent stiffness parameters of the lattice core. A finite element model was used to perform the numerical analysis. A comparison of the results revealed that the two analyses are in good agreement. The influences of several important design parameters were examined on the buckling load.
Buckling resistance of joined composite sandwich conical–cylindrical shells with lattice core under lateral pressure
https://orcid.org/0000-0002-5665-9547
Abstract The main impetus of the present study is to investigate the buckling analysis of joined composite sandwich conical–cylindrical shells with reinforced lattice core subjected to external pressure via numerical and analytical approaches. The equivalent stiffness parameters of the lattice core have been determined by using an effective smeared technique and then superimposed with those of the skins in order to achieve the stiffness parameters of the whole structure. The theoretical formulation has been established based on the first-shear deformation theory and applying continuity conditions. Using power series technique, a highly accurate solution has been provided for evaluating the buckling load of the sandwich conical–cylindrical shells. The sandwich structures are made of two skins (inner and outer) and a middle lattice core composed of helical stiffeners. In addition, finite element analysis has been performed for validating the analytical model. Furthermore, the influences of several important design variables on the buckling characteristics have been investigated.
Highlights The buckling analysis of joined composite sandwich conical–cylindrical shells subjected to external pressure was studied. An effective mathematical model was used to obtain the equivalent stiffness parameters of the lattice core. A finite element model was used to perform the numerical analysis. A comparison of the results revealed that the two analyses are in good agreement. The influences of several important design parameters were examined on the buckling load.
Buckling resistance of joined composite sandwich conical–cylindrical shells with lattice core under lateral pressure
https://orcid.org/0000-0002-5665-9547
Abstract The main impetus of the present study is to investigate the buckling analysis of joined composite sandwich conical–cylindrical shells with reinforced lattice core subjected to external pressure via numerical and analytical approaches. The equivalent stiffness parameters of the lattice core have been determined by using an effective smeared technique and then superimposed with those of the skins in order to achieve the stiffness parameters of the whole structure. The theoretical formulation has been established based on the first-shear deformation theory and applying continuity conditions. Using power series technique, a highly accurate solution has been provided for evaluating the buckling load of the sandwich conical–cylindrical shells. The sandwich structures are made of two skins (inner and outer) and a middle lattice core composed of helical stiffeners. In addition, finite element analysis has been performed for validating the analytical model. Furthermore, the influences of several important design variables on the buckling characteristics have been investigated.
Highlights The buckling analysis of joined composite sandwich conical–cylindrical shells subjected to external pressure was studied. An effective mathematical model was used to obtain the equivalent stiffness parameters of the lattice core. A finite element model was used to perform the numerical analysis. A comparison of the results revealed that the two analyses are in good agreement. The influences of several important design parameters were examined on the buckling load.
Buckling resistance of joined composite sandwich conical–cylindrical shells with lattice core under lateral pressure
Zarei, M. (Autor:in) / Rahimi, G.H. (Autor:in)
Thin-Walled Structures ; 174
05.02.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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