Bionic Design & Lightweight Engineering

A special issue of Biomimetics (ISSN 2313-7673). This special issue belongs to the section "Biomimetic Design, Constructions and Devices".

Deadline for manuscript submissions: 10 June 2024 | Viewed by 1996

Special Issue Editor


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Guest Editor
School of Civil Engineering, Chongqing University, Chongqing, China
Interests: thin-walled structures; lightweight structures and materials; bionic structures; sandwich structures; additive manufacturing

Special Issue Information

Dear Colleagues,

The advancement in the designs of modern transportation vehicles like airplanes, ships, and automobiles, as well as the construction of tall buildings and blades, has resulted in a significant demand for structures that are lightweight but strong. The process of natural selection has led to the evolution of organisms with unique structures and functions, which can serve as a valuable source of inspiration for the creation of new lightweight and high-strength structures in the aforementioned fields, particularly with the utilization of additive manufacturing techniques. An example of such inspiration is found in bionic honeycomb sandwich structures, which demonstrate remarkable strength and low weight, making them suitable for applications in long flexible or large-span constructions such as satellite dishes, roofs, and blades. Furthermore, certain plants, like giant water lilies (specifically Victoria Amazonia originating from South America), have evolved leaves with an impressive load-bearing capacity of up to 60 kilograms, achieved through effectively applying principles of lightweight construction.

In light of the significance attributed to bionic design and lightweight structures, this Special Issue is pleased to announce the inclusion of Dr. Xiaoming Zhang as the Guest Editor, who graduated from the University of Manchester, works in Chongqing University, and has made substantial contributions to the study of 3D structures of beetle elytrons (forewing) and their bio-inspired sandwich plates (beetle elytron plate) in engineering applications. The purpose of this Special Issue is to comprehensively showcase the allure of bionic design and lightweight structures, thereby inviting a diverse range of research findings concerning the utilization of bionic and lightweight structures and materials within the realm of engineering. We eagerly anticipate receiving your valuable contributions in this field.

Dr. Xiaoming Zhang
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Biomimetics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • structural bionics
  • lightweight structures and materials
  • thin-walled structures
  • additive manufacturing

Published Papers (2 papers)

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Research

22 pages, 3756 KiB  
Article
Dimensioning of Biomimetic Beams under Bending for Additively Manufactured Structural Components
by Tim Röver, Cedrik Fuchs, Karim Asami and Claus Emmelmann
Biomimetics 2024, 9(4), 214; https://doi.org/10.3390/biomimetics9040214 - 04 Apr 2024
Viewed by 517
Abstract
Additively manufactured mechanical components show great lightweight characteristics and can often be enhanced by integrating biomimetic geometrical features. This study focuses on one specific subcase, namely the substitution of solid cylindrical beams that are under bending with geometrically more complex biomimetic beams. Based [...] Read more.
Additively manufactured mechanical components show great lightweight characteristics and can often be enhanced by integrating biomimetic geometrical features. This study focuses on one specific subcase, namely the substitution of solid cylindrical beams that are under bending with geometrically more complex biomimetic beams. Based on the pseudo-stem of the banana plant as a role model, six geometric beam designs were derived. Given the manufacturing constraints of the PBF-LB/M process, two abstractions were selected for detailed investigation in the main part of this study. The beam lengths were set to 100 mm. Based on parametric optimization simulations, optimal design parameters were identified for the two biomimetic abstractions for 26 different bending load cases ranging from 14 to 350 Nm. Analogous parameter optimizations were performed for a solid cylindrical beam design, which was used as a reference. The results provide detailed design solutions within the investigated intervals for biomimetic beams that can be substituted into more complex mechanical component designs with ease. The analysis provides information on which structures to use for the investigated loads. With the help of the developed numerical models, designers can easily generate biomimetic beam designs for specific bending load values. Full article
(This article belongs to the Special Issue Bionic Design & Lightweight Engineering)
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18 pages, 968 KiB  
Article
Mechanical Performance Comparison of Sandwich Panels with Graded Lattice and Honeycomb Cores
by Hussam Georges, Diego García Solera, Carlos Aguilar Borasteros, Mohmad Metar, Gyeongseob Song, Rahul Mandava, Wilfried Becker and Christian Mittelstedt
Biomimetics 2024, 9(2), 96; https://doi.org/10.3390/biomimetics9020096 - 06 Feb 2024
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Abstract
The design of graded and multifunctional lattice cores is driven by the increasing demand for high-performance components in lightweight engineering. This trend benefits from significant achievements in additive manufacturing, where the lattice core and the face sheets are fabricated simultaneously in a single [...] Read more.
The design of graded and multifunctional lattice cores is driven by the increasing demand for high-performance components in lightweight engineering. This trend benefits from significant achievements in additive manufacturing, where the lattice core and the face sheets are fabricated simultaneously in a single print job. This work systematically compares the mechanical performance of sandwich panels comprising various graded lattice cores subjected to concentrated loads. In addition to graded lattice cores, uniform lattices and conventional honeycomb cores are analyzed. To obtain an optimized graded lattice core, a fully stressed design method is applied. Stresses and displacements are determined using a linear elastic analytical model that allows grading the core properties in a layerwise manner through the core thickness. The analysis indicates the superior performance of graded lattice cores compared to homogeneous lattice cores. However, conventional honeycombs outperform graded lattice cores in terms of load-to-weight ratio and stiffness-to-weight ratio. This study provides valuable insights for the design of lattice core sandwich panels and the advantages of several design approaches. Full article
(This article belongs to the Special Issue Bionic Design & Lightweight Engineering)
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