优化钛合金-Ti-6Al-4V,使增材制造中的质量最小、刚度最大、频率最高

Dame Alemayehu Efa, E. M. Gutema, H. Lemu, Mahesh Gopal
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引用次数: 0

摘要

制造复杂的部件、无需模具的产品、更短的交付周期和材料分级是增材制造(AM)最有益的应用。本研究的目标是开发一个设计优化框架,利用拓扑和网格优化技术,使用增材制造技术开发飞机部件。研究人员使用 Solid works 创建了一个由钛合金制成的飞机支架三维模型。为了使质量最小化,频率和刚度最大化,使用 Altair Inspire 2022.1 软件进行了优化。组件优化采用有限元法,即在减少材料的同时保持建模组件的正常功能。使用带晶格填充的拓扑结构设计的航空航天组件实现了最佳性能,质量从 2.24810 千克降至 0.16235 千克,体积从 5.07579x105 毫米3降至 4.70922x102 毫米3,频率从 0.02 千赫增至 13.9537 千赫,刚度从 1,485,884.1 牛/米增至 4,558,924.0939 牛/米,安全系数为 1.73。因此,优化模型的机械性能可以充分发挥其整体性能。
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Optimization of Titanium Alloy-Ti-6Al-4V to Minimize Mass, Maximize Stiffness and Frequency in Additive Manufacturing
Manufacture of intricate components, products without the need for tooling, shorter lead times and material grading are the most beneficial applications of Additive Manufacturing (AM). The goal of this study is to develop a design optimization framework for developing an aircraft component using additive manufacturing utilizing topology and lattice optimization techniques. Solid works were used to create a 3D model of an aircraft bracket made of Titanium alloy. To minimize mass and maximize frequency and stiffness, the optimization was performed using Altair Inspire 2022.1 software. Component optimization was performed using the finite element method, which entails reducing material while maintaining the proper function of the modelled component. The optimal performance of the designed aerospace component using topology with lattice infill is achieved with minimization of mass from 2.24810 kg to 0.16235 kg and the volume from 5.07579x105 mm3 to 4.70922x102 mm3, frequency is increased from 0.02 kHz to 13.9537 kHz, stiffness is maximized from 1,485,884.1 N/m to 4,558,924.0939 N/m with a factor of safety of 1.73. Therefore, the mechanical properties of the optimized model can full fill its overall performance.
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