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首页> 外文期刊>IJIDeM: International Journal on Interactive Design and Manufacturing >Optimization assisted redesigning a structure of a hydrogen valve: the redesign process and numerical evaluations
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Optimization assisted redesigning a structure of a hydrogen valve: the redesign process and numerical evaluations

机译：优化辅助重新设计氢气阀的结构：重新设计过程和数值评估

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This study introduced the redesign process of an automotive hydrogen valve. The process relied on the structural optimization approach, which used to build up the new valves having promising stiffness and the lowest possible weights. To achieve the goals, the study was proposed to be taken place via the three main stages. These stages included topology optimization, lattice optimization, as well as numerical evaluations. The achieved results firstly indicated that the two newly designed valves possessed longer life and lower mass than the original valve. Especially, the topology optimized one could withstand more than 5E4 working cycles in the pre-treated condition before the first crack would be nucleated. The results also pointed out the influences of the pre-treatment pressure on the fatigue performance of the hydrogen valve. Within the examined ranges of the pressure, increasing the pressure's magnitudes tended to shorten the fatigue life of the topology optimized valve. Additionally, the results highlighted the impact of the employed materials on the estimated fatigue life of such a non-treated structure. In the highlights, the considered steel valves could function normally far beyond 1.5E5 working cycles while the aluminum valves would have an initial crack formation prior to reaching 3E3 cycles. The results also suggested that further practical evidence is needed to not only confirm whether the selected printed aluminum is among the promising candidate materials of the hydrogen valve but also to support the described evaluations.
机译：本研究介绍了汽车氢气阀的重新设计过程。该过程依赖于结构优化方法，该方法用于建立具有承诺刚度和最低可能重量的新阀门。为实现目标，提出了通过三个主要阶段进行的研究。这些阶段包括拓扑优化，格子优化以及数值评估。达到的结果首先表明，两个新设计的阀门具有比原始阀门更长的寿命和更低的质量。特别是，在第一个裂纹将核化之前，优化的拓扑结构可以承受超过5e4的工作循环。结果还指出了预处理压力对氢气疲劳性能的影响。在检查的压力范围内，增加压力的大小倾向于缩短拓扑优化阀的疲劳寿命。此外，结果突出了采用材料对这种未处理结构的估计疲劳寿命的影响。在亮点中，所考虑的钢阀可以在达到1.5E5的工作循环中运用，而铝阀在达到3E3循环之前具有初始裂缝形成。结果还建议需要进一步的实际证据来确认所选择的印刷铝是否是氢气阀的有希望的候选材料，而且还需要支持所描述的评估。

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