International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 05 | May 2024
p-ISSN: 2395-0072
www.irjet.net
Axial Compression Behavior of 3D Printed Bioinspired Honeycomb Structures Fabricated from MWCNT-Reinforced PETG Polymer Composites Shaik Firoz Basha1, N Phani Raja Rao2 1M.Tech Student, Production Engineering Dept & Sri Venkateswara Institute of Technology,
N.H 44, Hampapuram, Rapthadu, Andhra Pradesh, India
2Associate Professor and HOD, Production Engineering Dept & Sri Venkateswara Institute of Technology,
N.H 44, Hampapuram, Rapthadu, Andhra Pradesh, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract – Due to their exceptional mechanical
loading conditions, has been extensively documented [6-7]. Recent studies further indicate that small adjustments to the designs of lightweight and high-strength materials can significantly enhance crushing force [8-9]. Similarly, increasing the inward corners of lightweight structures has been shown to improve their energy absorption capacity [10]. Additionally, incorporating corners into the crosssection of tubes has demonstrated a notable improvement in absorption capacity results [11]. Numerous researchers have highlighted that the geometrical changes are crucial for improving the energy absorption capabilities of these structures. This ongoing research underscores the importance of design optimization in enhancing the mechanical performance of materials used in engineering applications. However, studies under different loading conditions, such as tensile, compression, and buckling, have been conducted over the past decades to understand the mechanical properties of these structures [12]. Honeycomb structures have shown superior mechanical characteristics, as evidenced by numerous numerical, experimental, and empirical studies [13]. This ongoing research underscores the importance of design optimization in enhancing the mechanical performance of materials used in engineering applications.
characteristics, including effective load distribution and high strength-to-weight ratio, honeycomb structures are extensively employed in a wide range of engineering applications. These structures mirror natural designs, serving as models for the development of robust yet lightweight materials. Inspired by the vascular plant Equisetum, this experimental study examines six unique honeycomb structure configurations to comprehend their mechanical behavior under axial compressive loads. Using PETG reinforced with 0.5% MWCNT material, the structures were created via the Fused Deposition Modelling (FDM) technique. The axial compression behavior of these configurations was experimentally investigated to evaluate variations in mechanical performance across different geometries, highlighting the influence of structural design. The results demonstrated that the H1, H2, and H3 structures outperformed the others, indicating that structural design significantly impacts load distribution, stiffness, and resistance to compressive forces. These findings underscore the potential for optimizing honeycomb structures in engineering applications through careful design, enhancing their already impressive mechanical properties. Key Words: Honeycomb structures, Axial Compression, Stiffness, Fused Deposition Modelling, PETG, MWCNT
Therefore, in this study, the six bio-inspired honeycomb structures were designed with different configurations that vary with different cell sizes and thicknesses. Where the structures inspired by the vascular plant Equisetum replicated and few changes in geometries were implemented based on the literature. Additionally, a plane hollow cylindrical structure was designed to understand the influence of structural design. Then all different configurations were 3D Printed and subjected to axial compression loading conditions to understand their mechanical behavior. The conclusions were drawn according to the results and discussions were reported.
1. INTRODUCTION Recently, honeycomb structures have been renowned for their low strength-to-weight ratio and exceptional energy absorption capabilities, making them a popular choice among researchers for their mechanical properties and acoustic and thermal behaviors [1-2]. However, their evolution continues, drawing inspiration from nature and making them increasingly suitable for diverse engineering applications. Since the 1990s, researchers have played a pivotal role in this ongoing process, exploring innovative designs and materials to enhance the performance of honeycomb structures [3-5]. Research on the optimization of structures with various configurations, including square, circular, triangle, and hierarchical structures, under axial
© 2024, IRJET
|
Impact Factor value: 8.226
2. MATERIALS AND METHODS The methodology for developing bioinspired honeycomb structures commenced with the conceptualization and design of these structures, which were inspired by the
|
ISO 9001:2008 Certified Journal
|
Page 2158