Impact behavior of periodic, stochastic, and anisotropic minimal surface-lattice sandwich structures

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 276, P. 109359 - 109359

Published: May 4, 2024

Recent advancements in 3D printing technologies have made it possible to fabricate intricate lattice architectures with high precision. These lattices can now be utilized design lightweight sandwich structures that serve multiple functions. To enhance the impact loading performance of these structures, is crucial understand how lattice's topological properties, particularly those minimal surface attributes like periodic or stochastic Primitive and Gyroid triply surfaces (TPMS) spinodal-like cellular materials, associate mechanical properties while keeping skin thickness fixed. Thus, this paper explores low-velocity behavior various sheet/shell-based surface-latticed cores woven composite skins. The elasto-plastic-damage numerical simulations consider core periodicity, randomness, anisotropy relative density constant. Core randomness are designed using Gaussian Random Field (GRF) method for spinodal-based materials TPMS. simulation results showed Primitive-lattice exhibits out-of-plane shearing strength, enabling structure demonstrate highest perforation limit. GRF achieved peak load due its anisotropic properties. However, post-yielding bending sheet limited ability resist perforation, absorb dissipated energy. Interestingly, TPMS topology, inherent densely-distributed microstructure, sensitivity rate, resulting enhanced energy absorption dissipation structure. findings offer valuable insights optimizing multifunctional superior their additive manufacturing.

Language: Английский

---

Multifunctional hybrid plate lattice structure with high energy absorption and excellent sound absorption

Materials & Design, Journal Year: 2024, Volume and Issue: 241, P. 112946 - 112946

Published: April 15, 2024

Lattice structures are featured by their extraordinary mechanical performances in specific stiffness, strength, energy absorption, and sound etc. The recent trend of multifunctionality engineering applications has raised new requirements for the integration acoustic properties. In this paper, a multifunctional hybrid plate lattice structure denoted as SBHP is proposed hybridizing traditional body-centered cubic (BCCP) simple (SCP) structures, its absorption properties investigated theoretical modeling, simulation analysis experimental verification. effects hole diameters thicknesses on performance impedance matching system damping state analysis. results show that average coefficient SBHP-1 increased 24% 62%, normalized half-absorption bandwidth enlarged 45% 89% than those BCCP SCP, respectively. Heterogeneous constructed using synergistic mechanism strong weak coupling have more outstanding broadband effect. This work provides an effective approach design lightweight with excellent high absorption.

Language: Английский

---

Multi‐Physical Lattice Metamaterials Enabled by Additive Manufacturing: Design Principles, Interaction Mechanisms, and Multifunctional Applications

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 20, 2025

Abstract Lattice metamaterials emerge as advanced architected materials with superior physical properties and significant potential for lightweight applications. Recent developments in additive manufacturing (AM) techniques facilitate the of lattice intricate microarchitectures promote their applications multi‐physical scenarios. Previous reviews on have largely focused a specific/single field, limited discussion properties, interaction mechanisms, multifunctional Accordingly, this article critically design principles, structure‐mechanism‐property relationships, enabled by AM techniques. First, are categorized into homogeneous lattices, inhomogeneous other forms, whose principles processes discussed, including benefits drawbacks different fabricating types lattices. Subsequently, structure–mechanism–property relationships mechanisms range fields, mechanical, acoustic, electromagnetic/optical, thermal disciplines, summarized to reveal critical principles. Moreover, metamaterials, such sound absorbers, insulators, manipulators, sensors, actuators, soft robots, management, invisible cloaks, biomedical implants, enumerated. These provide effective guidelines

Language: Английский

---

Topology optimised novel lattice structures for enhanced energy absorption and impact resistance

Virtual and Physical Prototyping, Journal Year: 2024, Volume and Issue: 19(1)

Published: June 19, 2024

This study evaluates topologically optimized lattice structures for high strain rate loading, crucial impact resistance. Using the BESO (Bidirectional Evolution Structural Optimisation) topology optimisation algorithm, CompIED and ShRIED topologies are developed enhanced energy absorption Micromechanical simulations reveal surpasses theoretical elasticity limits isotropic cellular materials, while hybrid design ShRComp achieves maximum across all relative densities. Compared to TPMS, truss, plate lattices, proposed exhibit higher uniaxial modulus. Manufactured via fused deposition modeling with ABS thermoplastic, their capabilities assessed through compression tests simulations. The demonstrates superior under compared CompIED. Impact analyses of sandwich at varying velocities show exceptional resistance perforation efficiency, outperforming other classes similar These findings position these new novel as promising candidates applications.

Language: Английский

---

In pursuit of a high-performance mechanical metamaterial: Simple-cubic-octahedral plate lattice

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 272, P. 109189 - 109189

Published: March 11, 2024

Language: Английский

---

A Study of energy absorption properties of Heteromorphic TPMS and Multi-morphology TPMS under quasi-static compression

Thin-Walled Structures, Journal Year: 2024, Volume and Issue: unknown, P. 112519 - 112519

Published: Oct. 1, 2024

Language: Английский

---

Microscopic stress-constrained two-scale topology optimisation for additive manufacturing

Virtual and Physical Prototyping, Journal Year: 2025, Volume and Issue: 20(1)

Published: Jan. 20, 2025

Language: Английский

---

Defect-Sensitivity of Stochastic and Periodic Minimal Surface Titanium Cellular Materials

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110063 - 110063

Published: Feb. 1, 2025

Language: Английский

---

Mechanisms of low-frequency bandgap formation and energy absorption of three-dimensional nested hybrid lattice structures

Composites Part B Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 112045 - 112045

Published: Nov. 1, 2024

Language: Английский

---

Topology optimization and biomechanical evaluation of bone plates for tibial bone fractures considering bone healing

Virtual and Physical Prototyping, Journal Year: 2024, Volume and Issue: 19(1)

Published: Aug. 22, 2024

Implant designs highly influence their biomechanical performances when fixed with load-bearing long bone fractures. In this research work, the topology optimisation technique was used to obtain different shapes and of plates according three loadings, e.g. lateral bending (LB), axial compression (AC), physiological loads (PL), solid volume fractions Vf 30% 70%. Bi-phasic mechano-regulation algorithm investigate callus healing for a given plate design, stresses in screws were monitored. To further validate designs, fatigue analyses using Fe-safe three-point tests performed additively manufactured plates. Topology-optimised PL 70% showed maximum stiffness (peak load 138 N 29 N/mm) among optimised plates, best normalised 0.6 0.7 iterations 21 42, respectively. Thus, produced actual loading conditions (PL) outperformed other during evaluation fractured bones.

Language: Английский

---