A novel nature inspired 3D open lattice structure for specific energy absorption

Ashok, Dara; Bahubalendruni, M. V. A. Raju; Mertens, A. Johnney; Murali, Gunji Bala

doi:10.1177/09544089221092894

Cited by 46 publications

(15 citation statements)

References 18 publications

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“…Te detailed view of NLIIs computer aided design (CAD) infll model is shown in Figure 2(c). Te selection of an optimal number of corners can create a strong network from the core to the outside by using the shape that existed, like in the lemon, by storing the optimal energy in a longer time [32].…”

Section: Novel Lemon-inspired Structurementioning

confidence: 99%

Design and Characterization of 2.5D Nature-Inspired Infill Structures under Out-Plane Quasi-Static Loading Condition

Ashok¹,

Bahubalendruni²

2023

Advances in Materials Science and Engineering

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The 2.5D (2.5-dimensional) structures are acquired to enhance safety and lightweight designs with better energy absorption in the aerospace and automobile sectors. Additive manufacturing (AM), which is practical to build suitable components in industrial and transportation applications, may produce these structures more efficiently. The current study aims to improve the 2.5D infilled structures mean crush force (MCF) and energy absorption capabilities. Under compression loading, the proposed novel nature-inspired 2.5D infilled structure is compared to six existing 2.5D geometries that are inspired by nature. These structures are made of cylindrical shells that are filled with various infill configurations and maintained at a consistent volume. Photopolymer resin is used as the material for the structures, which are created using a digital light processing (DLP) method under AM technology. The characterization of the constructed models was done under compressive out-plane quasi-static stress conditions. ANSYS numerical simulations have been carried out to confirm the dependability of experimental data. The impact of supporting ribs and infill designs on crushing behaviour is thoroughly discussed. Mean crush force (MCF) and specific energy absorption (SEA) under quasi-static compression loading are provided to the proposed unique nature-inspired 2.5D infilled structure to significantly boost crushing qualities, axial collapse, and energy absorption behaviours.

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Section: Novel Lemon-inspired Structurementioning

confidence: 99%

Design and Characterization of 2.5D Nature-Inspired Infill Structures under Out-Plane Quasi-Static Loading Condition

Ashok¹,

Bahubalendruni²

2023

Advances in Materials Science and Engineering

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“…In this context, Doodi and Gunji [74] have designed a novel hybrid bio-inspired lattice structure and fabricated them by vat polymerisation process using the principle of SLA technique. Ashok et al [75] considered a novel three-dimensional open lattice pattern, which was fabricated using vat polymerisation 3D printing technique. Vat Polymerization technique can work with a range of photopolymer materials, including standard resins, engineering-grade resins, and flexible or tough resins.…”

Section: Vat Polymerisation Processmentioning

confidence: 99%

Impact crushing response of additively manufactured hybrid metal-composite structures—a state of the art review

Kumar,

Kumar

2023

Funct. Compos. Struct.

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Thin-walled energy absorbing structures based on hybrid structural concepts have a lightweight benefit along with great potential of enhancing the crashworthiness characteristics. Inspired by the huge number of research investigations performed on novel additively manufactured hybrid metal-composite configurations and their latest developments, the current review article extensively reports the latest advances along with promising outcomes of the impact response of various additively manufactured hybrid metal-composite structures for crashworthiness applications. Specific consideration is given to the crushing performance of the hybrid structures fabricated from Fused deposition modelling technique. The significant additive manufacturing techniques, their material selections and exceptional customized structural designs explored in recent times are discussed elaborately. Crushing patterns obtained by hybrid energy absorbing structures under various loading conditions are recognized. Furthermore, comparison of various hybrid structures and their latest advances revealed the efficiency of the thin-walled hybrid configuration based on 3D printing techniques in terms of weight reduction, crashworthiness and energy absorption behaviour. This review article will serve as a catalyst to boost the scientific improvement of hybrid energy absorbing structures utilized as passive safety protective devices in modern vehicles.

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“…A comparison analysis has been made between nature-inspired 2.5-Dimensional nature-inspired cellular structure and nature-inspired novel flower lattice. It is attained superior specific energy absorption capacity 24 , 25 .…”

Section: Introductionmentioning

confidence: 99%

Prediction and experimental validation approach to improve performance of novel hybrid bio-inspired 3D printed lattice structures using artificial neural networks

Doodi

Murali

2023

Sci Rep

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Novel Cellular lattice structures with lightweight designs are gaining more interest in the automobile and aerospace sectors. Additive manufacturing technologies have focused on designing and manufacturing cellular structures in recent years, increasing the versatility of these structures because of the significant benefits like high strength-to-weight ratio. In this research, a novel hybrid type of cellular lattice structure is designed, bio-inspired from the circular patterns seen in the bamboo tree structure and the overlapping patterns found on the dermal layers of fish-like species. The unit lattice cell with varied overlapping areas with a unit cell wall thickness of 0.4 to 0.6 mm. Fusion 360 software models the lattice structures with a constant volume of 40 × 40 × 40 mm. Utilizing the stereolithography (SLA) process and a vat polymerization type three-dimensional printing equipment is used to fabricate the 3D printed specimens. A quasi-static compression test was carried out on all 3D printed specimens, and the energy absorption capacity of each structure was calculated. Machine learning technique like the Artificial neural network (ANN) with Levenberg–Marquardt Algorithm (ANN-LM) was applied to the present research to predict the energy absorption of the lattice structure with parameters such as overlapping area, wall thickness, and size of the unit cell. The k-fold cross-validation technique was applied in the training phase to get the best training results. Overall, the results obtained using the ANN tool are validated and can be a favourable tool for lattice energy prediction with available data.

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A novel nature inspired 3D open lattice structure for specific energy absorption

Cited by 46 publications

References 18 publications

Design and Characterization of 2.5D Nature-Inspired Infill Structures under Out-Plane Quasi-Static Loading Condition

Design and Characterization of 2.5D Nature-Inspired Infill Structures under Out-Plane Quasi-Static Loading Condition

Impact crushing response of additively manufactured hybrid metal-composite structures—a state of the art review

Prediction and experimental validation approach to improve performance of novel hybrid bio-inspired 3D printed lattice structures using artificial neural networks

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