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All Outputs (26)

Stiffness tailoring in sinusoidal lattice structures through passive topology morphing using contact connections (2023)
Journal Article
Sundararaman, V., O'Donnell, M. P., Chenchiah, I. V., Clancy, G., & Weaver, P. M. (2023). Stiffness tailoring in sinusoidal lattice structures through passive topology morphing using contact connections. Materials and Design, 226, https://doi.org/10.1016/j.matdes.2023.111649

Structures with adaptive stiffness characteristics present an opportunity to meet competing design requirements, thus achieving greater efficiency by the reconfiguration of their topology. Here, the potential of using changes in the topology of plana... Read More about Stiffness tailoring in sinusoidal lattice structures through passive topology morphing using contact connections.

Characterising the transformative shear response of cellular lattices when subject to topological reconfiguration (2022)
Presentation / Conference
Sundararaman, V., O'Donnell, M., Chenchiah, I., & Weaver, P. (2022, July). Characterising the transformative shear response of cellular lattices when subject to topological reconfiguration. Paper presented at 11th European Solid Mechanics Conference, National University of Ireland Galway

Demand for lightweight, adaptive and re-configurable structures is increasing in many fields such as space and robotics, encouraging designers to develop morphing lattice structures [1]. Changes in topology of lattice-like structures alters their eff... Read More about Characterising the transformative shear response of cellular lattices when subject to topological reconfiguration.

Tuning of compliant composite shell structures for assisted living (2022)
Presentation / Conference
O'Donnell, M., Stacey, J., Kim, C., & Shcenk, M. (2022, July). Tuning of compliant composite shell structures for assisted living. Paper presented at 11th European Solid Mechanics Conference, National University of Ireland Galway

The Office for National Statistics’ 50-year forecast predicts that the over sixty-five population of the UK will increase by 8.6 million [1], reflecting a world-wide trend towards ageing populations. Reduced mobility is commonplace within this demogr... Read More about Tuning of compliant composite shell structures for assisted living.

Morphing hexagonal frameworks (2022)
Presentation / Conference
O'Donnell, M., & Chenchiah, I. (2022, May). Morphing hexagonal frameworks. Presented at Elasticity Day 2022, University College London, UK

Topology morphing lattice structures (2021)
Conference Proceeding
Sundararaman, V., O'Donnell, M., Chenchiah, I. V., & Weaver, P. (2021). Topology morphing lattice structures. In Proceedings Series: ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. https://doi.org/10.1115/SMASIS2021-67531

Planar cellular lattice structures subject to axial compression may undergo elastic bending or buckling of the unit cells. If sufficient compression is applied, the columns of adjacent cells make contact. This changes the topology of the lattice by e... Read More about Topology morphing lattice structures.

From shear centre to eigenwrenches (2021)
Journal Article
Stacey, J. P., O’Donnell, M. P., Kim, C. J., & Schenk, M. (2021). From shear centre to eigenwrenches. Thin-Walled Structures, 161, Article 107478. https://doi.org/10.1016/j.tws.2021.107478

In the field of mechanism design, the behaviour of compliant shell mechanisms is commonly characterised via the eigenscrew decomposition of their spatial stiffness matrix. Recent developments have included the design of compliant shell mechanisms mad... Read More about From shear centre to eigenwrenches.

Exploring adaptive behavior of non-linear hexagonal frameworks (2020)
Journal Article
O'Donnell, M. P., Towes, M., Groh, R. M. J., & Chenchiah, I. V. (2020). Exploring adaptive behavior of non-linear hexagonal frameworks. Frontiers in Materials, 7, 64. https://doi.org/10.3389/fmats.2020.00064

© Copyright © 2020 O'Donnell, Towes, Groh and Chenchiah. Non-linear structural responses offer a rich design space that can be integrated into the development of novel (meta)-materials to enable transformative capabilities. By exploiting robust, repe... Read More about Exploring adaptive behavior of non-linear hexagonal frameworks.

Reconsidering laminate nonsymmetry (2020)
Journal Article
O’Donnell, M. P., & Weaver, P. M. (2020). Reconsidering laminate nonsymmetry. AIAA Journal, 58(4), 1811-1820. https://doi.org/10.2514/1.J058751

Nonsymmetric laminates are commonly precluded from composite design due to perceptions of reduced performance arising from in- and out-of-plane coupling. This coupling introduces warpage during cure—leading to raised stresses, together with diminishe... Read More about Reconsidering laminate nonsymmetry.

Bespoke extensional elasticity through helical lattice systems (2019)
Journal Article
Dixon, M. D. X., O'Donnell, M. P., Pirrera, A., & Chenchiah, I. V. (2019). Bespoke extensional elasticity through helical lattice systems. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 475(2232), https://doi.org/10.1098/rspa.2019.0547

© 2019 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. Nonlinea... Read More about Bespoke extensional elasticity through helical lattice systems.

Multiscale tailoring of helical lattice systems for bespoke thermoelasticity (2019)
Journal Article
O’Donnell, M. P., Stacey, J. P., Chenchiah, I. V., & Pirrera, A. (2019). Multiscale tailoring of helical lattice systems for bespoke thermoelasticity. Journal of the Mechanics and Physics of Solids, 133, 103704. https://doi.org/10.1016/j.jmps.2019.103704

© 2019 (Meta-)Materials, e.g. functional or architectured materials that change shape in response to external stimuli, often do so by exploiting solid–solid phase transitions or concerted elastic deformations. For the resulting system to be effective... Read More about Multiscale tailoring of helical lattice systems for bespoke thermoelasticity.

Thermal prestress in composite compliant shell mechanisms (2019)
Journal Article
Stacey, J. P., O'Donnell, M. P., & Schenk, M. (2019). Thermal prestress in composite compliant shell mechanisms. Journal of Mechanisms and Robotics, 11(2), Article 020908. https://doi.org/10.1115/1.4042476

This paper explores the ability to tailor the mechanical properties of composite compliant shell mechanisms, by exploiting the thermal prestress introduced during the composite laminate cure. An extension of an analytical tape spring model with compo... Read More about Thermal prestress in composite compliant shell mechanisms.

Comparing the effect of geometry and stiffness on the effective load paths in non-symmetric laminates (2019)
Conference Proceeding
Minera, S., Patni, M., Weaver, P., Pirrera, A., & O'Donnell, M. P. (2019). Comparing the effect of geometry and stiffness on the effective load paths in non-symmetric laminates. . https://doi.org/10.2514/6.2019-1766

© 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. In aerospace composite material design, it is common to encounter load bearing components that vary in thickness across their length. In plate design, ply drop... Read More about Comparing the effect of geometry and stiffness on the effective load paths in non-symmetric laminates.

Thermally actuated composite helical lattices (2017)
Conference Proceeding
O'Donnell, M. P., Watts, T., & Pirrera, A. (2017). Thermally actuated composite helical lattices. In Mechcomp3. 3rd international Conference of mechanics of composites

RAPID analysis of variable stiffness beams and plates: Legendre polynomial triple-product formulation (2017)
Journal Article
O'Donnell, M. P., & Weaver, P. M. (2017). RAPID analysis of variable stiffness beams and plates: Legendre polynomial triple-product formulation. International Journal for Numerical Methods in Engineering, 112(1), 86-100. https://doi.org/10.1002/nme.5528

Copyright © 2017 John Wiley & Sons, Ltd. Numerical integration techniques are commonly employed to formulate the system matrices encountered in the analysis of variable stiffness beams and plates using a Ritz based approach. Computing these integra... Read More about RAPID analysis of variable stiffness beams and plates: Legendre polynomial triple-product formulation.