Structural strength analysis of offshore rocket launch platform flame deflector under temperature loading
In order to ensure the structural safety of the flame deflector of the offshore launch platform and to clarify the impact of the rocket gas flow on the flame deflector structure during the offshore launch process,this paper was based on the study of the double-side wedge-type flame deflector of the semi-submersible sea launch platform.A method for convert-ing the gas flow load calculated by the CFD model into the structural finite element model load was proposed.The static and dynamic structural strength analysis of the flow channel area was performed using the direct calculation method and the ex-plicit dynamic solution method,and the verification is carried out in accordance with the corresponding specifications of CCS and DNV.The calculation results showed that the maximum stress of the integrated flame deflector is located at the two sides of the channel support structure,with a stress value of 304 MPa,and the maximum plastic strain is located at the circu-lar aperture of the support structure underneath the flame deflector surface,with a strain value of 1.613×10-3.The maximum stress of the detachable flame deflector is located at the connection between the flame deflector surface and the two sides of the structure,with a stress value of 321 MPa and the maximum plastic strain is located at the circular aperture of the support structure underneath the flame deflector surface,with a strain value of 1.756×10-3,both meeting the requirements of the spe-cifications.
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