The Deployable Structures Team is focused on predicting folding and deployment behavior of deployable听space structures in general. Two key areas that presently being focused are predicting the behavior of听self-deployable composite booms and thin-folded membranes. 听We are particularly interested in basic听mechanics of folding and deployment of ultra-thin shells/membranes under static and dynamic听conditions. Development of sophisticated numerical models involves multi-scale modelling, highly non-linear geometric conditions, dynamic snapping, failure of anisotropic materials, fatigue and fracture.听Group focuses equally on small-scale experiments to validate numerical results and 3D deformation听measuring techniques are being developed presently.听
PUBLICATIONS
- C. Piyumi and C. Mallikarachchi, 鈥淚nfluence of intersected fold-lines on thin folded membranes鈥, Moratuwa Engineering Research Conference 2020, MERCon2020, Katubedda, Sri Lanka, 28 - 30 July 2020.
- B.Y. Dharmadasa, M.W. McCallum, S. Mierunalan, S.P. Dassanayake, H.M.Y.C. Mallikarachchi and F. Lopez-Jimenez, 鈥淔ormation of plastic creases in thin polyimide films鈥, ASME. J. Appl. Mech., May 2020; 87(5), 2020.
- S.Nadarajah, M.Jeyasekara, H.M.Y.C. Mallikarachchi, "Nonlinear Bending Response of Two-Ply Plain Woven Carbon Fiber Composites", in 5th International multidisciplinary engineering research conference, Moratuwa, Sri Lanka, 2019.
- L.M.M.B. Jayasekara, H.S. Wijesuriya and H.M.Y.C. Mallikarachchi, 鈥淏ending behaviour of thin woven fibre composites under high curvatures鈥, Proceedings of the Annual Sessions of Institution of Engineers - Sri Lanka, Colombo, Sri Lanka, 17 - 18 October 2019.
- H.M.Y.C. Mallikarachchi, 鈥淧redicting mechanical properties of thin woven carbon fiber rein-forced laminates", Thin-Walled Structures, 135(2019):297鈥305, 2018.听
- B.Y. Dharmadasa, H.M.Y.C. Mallikarachchi and F. Lopez-Jimenez (2018), 鈥淐haracterizing the mechanics of fold-lines in thin Kapton membranes鈥, 4th AIAA Spacecraft Structures Conference, AIAA-2018-0450, Orlando, Florida, 7 - 12 January 2018.听
- H.S. Wijesuriya, D.C.D.K. Karannagodage, S. Nadarajah and H.M.Y.C. Mallikarachchi (2018), 鈥淧redicting bending behavior of deployable booms made of thin woven fiber composites鈥, Proceedings of the Annual Sessions of Institution of Engineers - Sri Lanka, Colombo, Sri Lanka, 18 - 19 October 2018.
- D.M.S.P. Dassanayake, S. Mierunalan, H.C. Weerasinghe and H.M.Y.C. Mallikarachchi (2018), 鈥淔old-line mechanics of thin-folded membranes鈥, Proceedings of the Annual Sessions of Institution of Engineers - Sri Lanka, Colombo, Sri Lanka, 18 - 19 October 2018.
- M. Sokovsky, S. Pellegrino and H.M.Y.C. Mallikarachchi, 鈥淔olding and deployment of closed cross-section dual-matrix composite booms鈥, 3rd AIAA Spacecraft Structures Conference, AIAA-2016-0970, San Diego, California, 4-8 January 2016.
- H.M.Y.C. Mallikarachchi and S. Pellegrino, 听鈥淒esign of ultrathin composite self-deployable booms鈥, Journal of Spacecraft and Rockets, Vol. 51(6):1811鈥1821, 2014.
- H.M.Y.C. Mallikarachchi and S. Pellegrino, 鈥淒eployment dynamics of ultrathin composite booms with tape-spring hinges鈥, Journal of Spacecraft and Rockets, Vol. 51(2):604鈥 613, 2014.
- H.M.Y.C. Mallikarachchi and S. Pellegrino, 鈥淔ailure criterion for symmetric two-ply plain-weave CFRP laminates鈥, Journal of Composite Materials, Vol. 47(11):1357鈥1375, 2013.
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