Topology optimisations for integrated thermal protection systems considering thermo-mechanical constraints

Yang, Qiang; Gao, Bo; Zhao, Xu; Xie, Weihua; Meng, Sheng

doi:10.1016/j.applthermaleng.2019.01.067

Cited by 36 publications

(10 citation statements)

References 31 publications

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“…Under such demand, integrated thermal protection materials or structures have been developed currently. [19][20][21][22] Among them, toughened uni-piece fibrous reinforced oxidation-resistant composite (TUFROC) was the representative. [23][24][25] It had a fibrous base inner material to provide heat insulation, and a treated carbonaceous cap composed of refractory oxidation-resistant ceramic carbon insulation (ROCCI) at top surface.…”

Section: Introductionmentioning

confidence: 99%

Heat insulation and ablation resistance performance of continuous fiber reinforced composites with integrated gradient fabric

Zhang

Zhu³

et al. 2022

Polymer Composites

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The continuous fiber reinforced porous resin‐based composites with integrated gradient fabric (CPIGF) were successfully prepared. From the bottom to the top surface, the fiber volume fraction of the integrated fabric gradually increased, as well as the fabric architecture changed, meanwhile the porosity of the resin gradually decreased. The temperature in the inner composite increased quite slowly during ablation, and the linear ablation rate ranged from 0.019 mm/s to 0.029 mm/s. The simulation results showed that the good heat insulation capacity of CPIGFs was attributed to the anisotropy properties of the fabric architecture. The microstructure analysis showed that the good ablation resistance came from both the thermal expansion of the integrated gradient fabric and the densification of the zone with 3D orthogonal woven fabric. This work is helpful for designing thermal protection materials having both heat insulation and ablation resistance for hypersonic aircrafts.

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Section: Introductionmentioning

confidence: 99%

Heat insulation and ablation resistance performance of continuous fiber reinforced composites with integrated gradient fabric

Zhang

Zhu³

et al. 2022

Polymer Composites

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“…Later, researchers also developed various topology optimization methods for thermo-mechanical design problems considering transient response, heat conduction properties, manufacturability, nonlinearity, and so forth. [15][16][17][18][19] These achievements are mostly based on solid materials, which limit the capability and functionality of the optimal structural designs. The concurrent designs in both macro structural and micro material levels provide promising means to acquire new lightweight and high-performance structures.…”

Section: Introductionmentioning

confidence: 99%

Concurrent topology optimization for thermoelastic structures with random and interval hybrid uncertainties

Zheng

Ding

Jiang

et al. 2021

Numerical Meth Engineering

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A concurrent topology optimization for thermoelastic structures with random and interval hybrid uncertainties is discussed in this work. A robust topology optimization method is proposed for structures composed of periodic microstructures under thermal and mechanical coupled loads. The robust objective function is defined as a linear combination of the mean and standard variance under the worst case for the robust optimization model. An efficient hybrid orthogonal polynomial expansion (HOPE) method is developed to evaluate the robust objective function. The sensitivities for the robust topology optimization are then calculated based on the uncertainty analysis. Three numerical examples are provided to verify the effectiveness of the proposed method, and the Monte Carlo scanning test is used to validate the numerical accuracy of our proposed method. For comparison purpose, the topology optimizations under deterministic assumptions are also provided for these examples to show the importance of considering hybrid uncertainties.

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“…Therefore, the objective function is no more purely mechanical but must also take into account thermal objective, such as guarantee a defined heat exchange. For example, Yang et al 14 defined a topology optimization method that considers both thermal and mechanical objectives. Takezawa et al 15 proposed a topology optimization algorithm with constraints on structural strength and thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

“…For example, Yang et al. 14 defined a topology optimization method that considers both thermal and mechanical objectives. Takezawa et al.…”

Section: Introductionmentioning

confidence: 99%

A new methodology for thermostructural topology optimization: Analytical definition and validation

Caivano

Tridello

Codegone

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part L:

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In the last few years, the rapid diffusion of components produced through additive manufacturing processes has boosted the research on design methodologies based on topology optimization algorithms. Structural topology optimization is largely employed since it permits to minimize the component weight and maximize its stiffness and, accordingly, optimize its resistance under structural loads. On the other hand, thermal topology optimization has been less investigated, even if in many applications, such as turbine blades, engines, heat exchangers, thermal loads have a crucial impact. Currently, structural and thermal optimizations are mainly considered separately, despite the fact that they are both present and coupled in components in service condition. In the present paper, a novel methodology capable of defining the optimized structure under simultaneous thermomechanical constraints is proposed. The mathematical formulation behind the optimization algorithm is reported. The proposed methodology is finally validated on literature benchmarks and on a real component, confirming that it permits to define the topology, which presents the maximized thermal and mechanical performance.

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Topology optimisations for integrated thermal protection systems considering thermo-mechanical constraints

Cited by 36 publications

References 31 publications

Heat insulation and ablation resistance performance of continuous fiber reinforced composites with integrated gradient fabric

Heat insulation and ablation resistance performance of continuous fiber reinforced composites with integrated gradient fabric

Concurrent topology optimization for thermoelastic structures with random and interval hybrid uncertainties

A new methodology for thermostructural topology optimization: Analytical definition and validation

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