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Multi-objective ceramic matrix composite material design using the variable fidelity model management optimization framework

机译:基于可变保真度模型管理优化框架的多目标陶瓷基复合材料设计

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摘要

The increasing computational requirements of advanced numerical tools for simulating material behaviour can prohibit direct integration of these tools in a design optimization procedure where multiple iterations are required. Therefore, a design approach is needed that can incorporate multiple simulations (multi-physics with different input variables) of varying fidelity in an iterative model management framework that can significantly reduce design cycle times. In this research, a material design tool based on a variable fidelity model management framework is applied to obtain the optimal size of a second phase, consisting of silicon carbide (SiC) fibres, in a silicon-nitride (Si3N4) matrix to obtain continuous fibre SiC-Si3N4 ceramic composites (CFCCs) with maximum high temperature strength and high temperature creep resistance. This investigation shows how models with different dimensions and input design variables can be handled and integrated efficiently by the trust region model management framework, while significantly reducing design cycle times in application to the design of multiphase composite materials.
机译:用于模拟材料行为的高级数值工具对计算的要求不断提高,可能会禁止将这些工具直接集成到需要多次迭代的设计优化过程中。因此,需要一种设计方法,该方法可以在迭代模型管理框架中合并保真度不同的多个模拟(具有不同输入变量的多物理场),从而可以显着减少设计周期。在这项研究中,使用了基于可变保真度模型管理框架的材料设计工具来获得氮化硅(Si 3 N 4 )基体以获得具有最高高温强度和高温的连续纤维SiC-Si 3 N 4 陶瓷复合材料(CFCC)抗蠕变性。这项调查显示了如何通过信任区域模型管理框架有效地处理和集成具有不同尺寸和输入设计变量的模型,同时显着减少了应用于多相复合材料设计的设计周期。

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  • 来源
    《Engineering Optimization》 |2010年第11期|p.1055-1078|共24页
  • 作者

    G. Mejía-Rodríguez;

  • 作者单位

    Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana, USA School of Aeronautics and Astronautics, Purdue University, West Lafayette, Indiana, USA;

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  • 正文语种 eng
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