Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Thermomechanical optimization of lightweight thermal protection system under aerodynamic heating

In English

Författare

Summary, in English

An optimization procedure has been established aiming to design an integrated thermal protection system (ITPS) with minimum weight. The objective of this research is to establish the procedure and ensure its effectiveness. A corrugated sandwich panel has been chosen as the optimization problem. The ITPS geometric dimensions are considered as the design variables. The objective function is the mass per unit area of the ITPS and the constraint conditions are that the inner temperature and local stress both must be below certain values. The optimization problem is solved by developing a finite element simulation to represent the constraints. The parametric design language code in conjunction with the globally convergent method of moving asymptotes (GCMMA) has been developed for heat transfer analysis and thermal mechanical analysis. The results show that the thicknesses of the top faceplate, bottom faceplate and insulation must be larger than 1 mm, 3.2 mm, and 134 mm, respectively, to guarantee that the constraint temperature is below the safe value. Thermal-mechanical sizing could save more than 37% of weight compared to the initial design. Different working conditions and failure modes of space vehicle should be analyzed in the future. The optimization procedure might be useful in future works. Crown Copyright (C) 2013 Published by Elsevier Ltd. All rights reserved.

Avdelning/ar

Publiceringsår

2013

Språk

Engelska

Sidor

425-434

Publikation/Tidskrift/Serie

Applied Thermal Engineering

Volym

59

Issue

1-2

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Energy Engineering

Nyckelord

  • Thermal protection system (TPS)
  • Thermomechanical optimization
  • Lightweight
  • Finite element simulation

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 1359-4311