Analysis of mechanical response of Ti-6Al-4V lattice structures using finite element method

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dc.contributor.advisorMankovits, Tamás
dc.contributor.authorZhang, Haochen
dc.contributor.departmentDE--Műszaki Kar
dc.date.accessioned2025-02-05T12:28:53Z
dc.date.available2025-02-05T12:28:53Z
dc.date.created2024-11-19
dc.description.abstractWith the advent of the Fourth Industrial Revolution, the demand for lightweight, high- performance materials is increasing across various industries, including aerospace, automotive, construction, and medical bio-implants. These sectors are placing higher demands on the mechanical properties of structural materials. Lightweight materials have become crucial for improving energy efficiency and environmental performance. However, conventional material structures often struggle to meet both lightweight and high-strength requirements. Consequently, the development of innovative lattice structures to enhance material properties has emerged as an important area of research. In this study, we employed the controlled variable method to ensure that different structures were compared under consistent conditions, minimizing the influence of external factors and ensuring the accuracy of the experiments. We first modeled and analyzed four different lattice structures. Finite element analyses were conducted using ANSYS software to evaluate the impact of their fill rates on mechanical properties and identify the most suitable lattice types for multidisciplinary applications. The modeling was executed in ANSYS SpaceClaim, followed by finite element analysis in ANSYS Workbench. A thorough evaluation of stress distribution, strain, and other relevant factors was performed for each generated structure. The analyses aimed to assess how fill rate influences the mechanical properties of the lattice structures in this study. Each of the four designs featured different lattice cell shapes and fill rates, while the length of the lattice structure was kept constant to ensure a valid comparison across all types. For this research, we selected Ti-6Al-4V, the most commonly used material in additive manufacturing. We determined the stress-strain characteristic diagrams for the four types of structures: simple cubic lattice, center-supported lattice, side-crossed-supported lattice, and lateral-diagonal- supported lattice. Additionally, we calculated the effective Young's modulus for each case and performed a comprehensive comparison and analysis of the simulated values. The results revealed significant differences in the mechanical behavior of each lattice structure at various fill rates. We found that the simple cubic lattice and the center-supported lattice are effective for mimicking human cortical bone at low fill rates. In contrast, the lateral cross-supported lattice demonstrates high performance even at a 50% fill rate. This lateral cross-support lattice exhibits a high Young's modulus, making it suitable for high-strength applications, such as metal implants. However, its high modulus of elasticity deviates significantly from the elastic properties of natural bone, which must be considered in biomaterial design. Side-to-side diagonal support lattices showcase excellent stiffness and deformation resistance at high fill rates, rendering them suitable for applications like spinal braces and other support devices. For industrial uses, the lateral cross-support lattice is appropriate for gas turbine fan blades, while the lateral diagonal support lattice is ideal for UAV wing designs at a 70% fill rate, as it combines high stiffness with lightweight requirements. Our findings underscore the varying applicability of different cell structures at various fill rates, providing valuable insights for material design and optimization.
dc.description.courseGépészmérnöki
dc.description.degreeBSc/BA
dc.format.extent38
dc.identifier.urihttps://hdl.handle.net/2437/386699
dc.language.isoen
dc.rights.accessHozzáférhető a 2022 decemberi felsőoktatási törvénymódosítás értelmében.
dc.subjectFinite element method
dc.subjectAdditive Manufacturing
dc.subjectLattice structure
dc.subjectTi-6Al-4V
dc.subject.dspaceMűszaki tudományok::Gépészet
dc.titleAnalysis of mechanical response of Ti-6Al-4V lattice structures using finite element method
dc.title.translatedTi-6Al-4V rácsszerkezetek mechanikai válaszának elemzése végeselemes módszerrel
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