DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASS
At the present stage of aviation and missile equipment development there is increasing necessity for considering fast-acting, high-speed processes of impact interaction of structure elements with external loads, represented as both power factors (longitudinal force or bending moment) and uniformly s...
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| Format: | Article |
| Language: | Russian |
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Moscow State Technical University of Civil Aviation
2017-06-01
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| Series: | Научный вестник МГТУ ГА |
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| Online Access: | https://avia.mstuca.ru/jour/article/view/1087 |
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| author | I. K. Turkin D. A. Rogov |
| author_facet | I. K. Turkin D. A. Rogov |
| author_sort | I. K. Turkin |
| collection | DOAJ |
| description | At the present stage of aviation and missile equipment development there is increasing necessity for considering fast-acting, high-speed processes of impact interaction of structure elements with external loads, represented as both power factors (longitudinal force or bending moment) and uniformly spread aerodynamic pressure. The article analyses the dy- namic behavior of the nonuniformly-heated thin conical rotational shell, modelling the aircraft heat shield, under pressure wave loading in a gaseous environment. Stress-strain shell behavior caused by preliminary uneven heating is determined by solving thermo elastic equilibrium equations. The temperature field can be specified as any functional dependence in both circumferential and longitudinal coordinates of a thin-walled axisymmetric shell. The solution of the dynamic problem is obtained by the integration of shell and attached mass motion nonlinear equations under predetermined initial displace- ments, zero initial rates, and boundary conditions appropriate for heat shield fixation. The work presents simultaneous equations solution in the form of time dependent behavior from the beginning of front external pressure impact for dis- placements and stresses in thin-walled structures. The dependent behavior for various shell designs is presented taking into account the changes of shell thickness and attached mass. It is shown that the initial conditions of non-uniform shell heating cause leading-edge deflection comparable in size to the magnitude of the displacements from its free oscillations. However the values of stresses in a shell for its fixation area are more dependent on its thickness, than on the magnitude of the at- tached mass. |
| format | Article |
| id | doaj-art-e9e61e2f64c8423ebfc2a8a574149d68 |
| institution | DOAJ |
| issn | 2079-0619 2542-0119 |
| language | Russian |
| publishDate | 2017-06-01 |
| publisher | Moscow State Technical University of Civil Aviation |
| record_format | Article |
| series | Научный вестник МГТУ ГА |
| spelling | doaj-art-e9e61e2f64c8423ebfc2a8a574149d682025-08-20T03:23:19ZrusMoscow State Technical University of Civil AviationНаучный вестник МГТУ ГА2079-06192542-01192017-06-012031221301083DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASSI. K. Turkin0D. A. Rogov1Moscow State Aviation InstituteORPE “Technologiya” named after A.G. RomashinAt the present stage of aviation and missile equipment development there is increasing necessity for considering fast-acting, high-speed processes of impact interaction of structure elements with external loads, represented as both power factors (longitudinal force or bending moment) and uniformly spread aerodynamic pressure. The article analyses the dy- namic behavior of the nonuniformly-heated thin conical rotational shell, modelling the aircraft heat shield, under pressure wave loading in a gaseous environment. Stress-strain shell behavior caused by preliminary uneven heating is determined by solving thermo elastic equilibrium equations. The temperature field can be specified as any functional dependence in both circumferential and longitudinal coordinates of a thin-walled axisymmetric shell. The solution of the dynamic problem is obtained by the integration of shell and attached mass motion nonlinear equations under predetermined initial displace- ments, zero initial rates, and boundary conditions appropriate for heat shield fixation. The work presents simultaneous equations solution in the form of time dependent behavior from the beginning of front external pressure impact for dis- placements and stresses in thin-walled structures. The dependent behavior for various shell designs is presented taking into account the changes of shell thickness and attached mass. It is shown that the initial conditions of non-uniform shell heating cause leading-edge deflection comparable in size to the magnitude of the displacements from its free oscillations. However the values of stresses in a shell for its fixation area are more dependent on its thickness, than on the magnitude of the at- tached mass.https://avia.mstuca.ru/jour/article/view/1087heat shieldshellmassaircraftthermal power loading |
| spellingShingle | I. K. Turkin D. A. Rogov DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASS Научный вестник МГТУ ГА heat shield shell mass aircraft thermal power loading |
| title | DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASS |
| title_full | DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASS |
| title_fullStr | DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASS |
| title_full_unstemmed | DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASS |
| title_short | DYNAMIC LOAD OF THE THIN CONICAL RADOME WITH A CONSIDERATION OF ATTACHED ADDITIONAL MASS |
| title_sort | dynamic load of the thin conical radome with a consideration of attached additional mass |
| topic | heat shield shell mass aircraft thermal power loading |
| url | https://avia.mstuca.ru/jour/article/view/1087 |
| work_keys_str_mv | AT ikturkin dynamicloadofthethinconicalradomewithaconsiderationofattachedadditionalmass AT darogov dynamicloadofthethinconicalradomewithaconsiderationofattachedadditionalmass |