Dr Damith Mohotti

Senior Lecturer - Civil Engineering
School of Engineering and Information Technology

LOCATION

Canberra

  • ABOUT
  • PUBLICATIONS

Dr Damith Mohotti is a nationally recognised expert in designing of protective structure, numerical modeling and finite element analysis.

The materials and methods used in the design and construction of built structures determines their capacity to withstand extreme loading, including strong winds, blasts and impacts. Designing such structures to withstand these natural and human-caused hazards, and thus protecting our critical infrastructure against them, is a particularly demanding area of today's research environment. Dr. Damith Mohotti’s work aims to advance this challenging and increasingly important area of structural engineering. Most of his research efforts are aimed at keeping people safe and protecting them from both natural and human-caused disasters by developing better design techniques for structures to survive under such extreme loading. With this interest and demand, Dr. Damith Mohotti’s work can be classified into four areas: (1) Blast and impact effects on structures (2) Development of smart materials (3) Development of advanced numerical analysis methods (4) Application of computational fluid dynamics (CFD) in structural engineering.

Dr. Damith Mohotti is a Senior Lecturer and an Engineering Consultant in the School of Civil Engineering and IT at UNSW Canberra at the Australian Defence Force Academy. He has engaged in many research and consultation projects. He was a key member of the Defence Science and Technology Organisation (DMTC) Eureka Prize winning team for Outstanding Science in Safeguarding Australia in 2013. In addition to his academic experience, Damith has worked in the construction and consultation industries for many years holding different positions. Damith Mohotti is a well-recognised researcher and a consultant in engineering consultancy and defence science sectors.

Most of my research efforts are aimed at keeping people safe and protecting them from both natural and human-caused disasters. I want to see structures withstand severe loading induced by human-caused events as well as natural disasters, so I am passionate about developing better design techniques for structures to survive under such extreme loading”. "One of my major research focuses is extreme loading on structures, such as blast and impact, and development of new techniques to ensuring that civil and defence protective structures and vehicles can be operated effectively in the face of increasing threats. I have made a significant contribution to research in vulnerability modelling of critical infrastructure, particularly in the area of assessment of the effects of natural and technical hazards on buildings and infrastructure.

Journal articles

Somarathna HMCC; Raman SN; Mohotti D; Mutalib AA; Badri KH, 2020, 'Rate dependent tensile behavior of polyurethane under varying strain rates', Construction and Building Materials, vol. 254, http://dx.doi.org/10.1016/j.conbuildmat.2020.119203

Weerasinghe D; Mohotti D; Anderson J, 2020, 'Incorporation of shear thickening fluid effects into computational modelling of woven fabrics subjected to impact loading: A review', International Journal of Protective Structures, vol. 11, pp. 340 - 378, http://dx.doi.org/10.1177/2041419619889071

Ranaweera P; Weerasinghe D; Fernando PLN; Raman SN; Mohotti D, 2020, 'Ballistic performance of multi-metal systems', International Journal of Protective Structures, vol. 11, pp. 379 - 410, http://dx.doi.org/10.1177/2041419619898693

Fernando PLN; Mohotti D; Remennikov A; Hazell PJ; Wang H; Amin A, 2020, 'Experimental, numerical and analytical study on the shock wave propagation through impedance-graded multi-metallic systems', International Journal of Mechanical Sciences, vol. 178, pp. 105621 - 105621, http://dx.doi.org/10.1016/j.ijmecsci.2020.105621

Rajeev A; Mohotti D; Shelke A, 2020, 'Implications of impact experiments on honeycomb shielded exterior beam-column joint', Engineering Structures, vol. 212, http://dx.doi.org/10.1016/j.engstruct.2020.110470

Wijesooriya K; Mohotti D; Amin A; Chauhan K, 2020, 'An uncoupled fluid structure interaction method in the assessment of structural responses of tall buildings', Structures, vol. 25, pp. 448 - 462, http://dx.doi.org/10.1016/j.istruc.2020.03.031

Somarathna HMCC; Raman SN; Mohotti D; Mutalib AA; Badri KH, 2020, 'Hyper-viscoelastic constitutive models for predicting the material behavior of polyurethane under varying strain rates and uniaxial tensile loading', Construction and Building Materials, vol. 236, pp. 117417 - 117417, http://dx.doi.org/10.1016/j.conbuildmat.2019.117417

Al-Kubaisi O; Mohotti D; Al-Qassag O, 2020, 'Prediction of plywood deformation under the impact of windborne debris using Taguchi method', IOP Conference Series: Materials Science and Engineering, vol. 671, http://dx.doi.org/10.1088/1757-899X/671/1/012096

Weerasinghe D; Mohotti D; Anderson J, 2020, 'Numerical Modelling of the Rate-sensitive Behaviour of High-performance Fabrics', Journal of Dynamic Behavior of Materials, http://dx.doi.org/10.1007/s40870-020-00274-4

Fernando PLN; Mohotti D; Remennikov A; Hazell PJ; Wang H; Amin A, 2020, 'Stress propagation and debonding effects in impedance-graded multi-metallic systems under impact loading', International Journal of Protective Structures, http://dx.doi.org/10.1177/2041419620917709

Fernando PLN; Mohotti D; Remennikov A, 2019, 'Behaviour of explosively welded impedance-graded multi-metal composite plates under near-field blast loads', International Journal of Mechanical Sciences, vol. 163, http://dx.doi.org/10.1016/j.ijmecsci.2019.105124

Fernando PLN; Mohotti D, 2019, 'Design of an impedance-graded metallic composite system as a protective mechanism for concrete structures', Journal of Applied Mechanics, Transactions ASME, vol. 86, http://dx.doi.org/10.1115/1.4043886

Wijesooriya K; Mohotti D; Chauhan K; Dias-da-Costa D, 2019, 'Numerical investigation of scale resolved turbulence models (LES, ELES and DDES) in the assessment of wind effects on supertall structures', Journal of Building Engineering, vol. 25, http://dx.doi.org/10.1016/j.jobe.2019.100842

Fernando PLN; Mohotti D; Remennikov A, 2019, 'An innovative approach of using continuous impedance-graded metallic composite system for attenuation of stress waves', Journal of Applied Mechanics, Transactions ASME, vol. 86, http://dx.doi.org/10.1115/1.4042681

Mohotti D; Wijesooriya K; Dias-da-Costa D, 2019, 'Comparison of Reynolds Averaging Navier-Stokes (RANS) turbulent models in predicting wind pressure on tall buildings', Journal of Building Engineering, vol. 21, pp. 1 - 17, http://dx.doi.org/10.1016/j.jobe.2018.09.021

Somarathna HMCC; Raman SN; Mohotti D; Mutalib AA; Badri KH, 2018, 'The use of polyurethane for structural and infrastructural engineering applications: A state-of-the-art review', Construction and Building Materials, vol. 190, pp. 995 - 1014, http://dx.doi.org/10.1016/j.conbuildmat.2018.09.166

Xing F; Mohotti D; Chauhan K, 2018, 'Study on localised wind pressure development in gable roof buildings having different roof pitches with experiments, RANS and LES simulation models', Building and Environment, vol. 143, pp. 240 - 257, http://dx.doi.org/10.1016/j.buildenv.2018.07.026

Mohotti D; Fernando PLN; Zaghloul A, 2018, 'Evaluation of possible head injuries ensuing a cricket ball impact', Computer Methods and Programs in Biomedicine, vol. 158, pp. 193 - 205, http://dx.doi.org/10.1016/j.cmpb.2018.02.017

Xing F; Mohotti D; Chauhan K, 2018, 'Experimental and numerical study on mean pressure distributions around an isolated gable roof building with and without openings', Building and Environment, vol. 132, pp. 30 - 44, http://dx.doi.org/10.1016/j.buildenv.2018.01.027

Remennikov A; Ngo T; Mohotti D; Uy B; Netherton M, 2017, 'Reprint of: Experimental investigation and simplified modeling of response of steel plates subjected to close-in blast loading from spherical liquid explosive charges', International Journal of Impact Engineering, vol. 105, pp. 1 - 12, http://dx.doi.org/10.1016/j.ijimpeng.2017.03.024

Remennikov A; Ngo T; Mohotti D; Uy B; Netherton M, 2017, 'Experimental investigation and simplified modeling of response of steel plates subjected to close-in blast loading from spherical liquid explosive charges', International Journal of Impact Engineering, vol. 101, pp. 78 - 89, http://dx.doi.org/10.1016/j.ijimpeng.2016.11.013

Chandima Chathuranga Somarathna HM; Raman SN; Badri KH; Mutalib AA; Mohotti D; Ravana SD, 2016, 'Quasi-static behavior of palm-based elastomeric polyurethane: For strengthening application of structures under impulsive loadings', Polymers, vol. 8, http://dx.doi.org/10.3390/polym8050202

Mohotti D; Ngo T; Raman SN; Mendis P, 2015, 'Analytical and numerical investigation of polyurea layered aluminium plates subjected to high velocity projectile impact', Materials and Design, vol. 82, pp. 1 - 17, http://dx.doi.org/10.1016/j.matdes.2015.05.036

Yang Y; Zhou R; Ge Y; Mohotti D; Mendis P, 2015, 'Aerodynamic instability performance of twin box girders for long-span bridges', Journal of Wind Engineering and Industrial Aerodynamics, vol. 145, pp. 196 - 208, http://dx.doi.org/10.1016/j.jweia.2015.06.014

Mohotti D; Raman SN; Ngo T; Mendis P, 2015, 'Use of coupled smooth-particle hydrodynamics/lagrangian method in the simulation of deformable projectile penetration', International Journal of Protective Structures, vol. 6, pp. 419 - 437, http://dx.doi.org/10.1260/2041-4196.6.3.419

Zhou R; Yang Y; Ge Y; Mendis P; Mohotti D, 2015, 'Practical countermeasures for the aerodynamic performance of long-span cable-stayed bridges with open decks', Wind and Structures, An International Journal, vol. 21, pp. 223 - 239, http://dx.doi.org/10.12989/was.2015.21.2.223

Ngo T; Mohotti D; Remennikov A; Uy B, 2015, 'Numerical simulations of response of tubular steel beams to close-range explosions', Journal of Constructional Steel Research, vol. 105, pp. 151 - 163, http://dx.doi.org/10.1016/j.jcsr.2014.11.007

Lua TWY; Mendis P; Ngo T; Zhang L; Mohotti D; Sofi M, 2014, 'Blast studies on bridges - A state-of-the-art review', Electronic Journal of Structural Engineering, vol. 14, pp. 7 - 19

Mohotti D; Ali M; Ngo T; Lu J; Mendis P, 2014, 'Strain rate dependent constitutive model for predicting the material behaviour of polyurea under high strain rate tensile loading', Materials and Design, vol. 53, pp. 830 - 837, http://dx.doi.org/10.1016/j.matdes.2013.07.020

Mohotti D; Ngo T; Raman SN; Ali M; Mendis P, 2014, 'Plastic deformation of polyurea coated composite aluminium plates subjected to low velocity impact', Materials and Design, vol. 56, pp. 696 - 713, http://dx.doi.org/10.1016/j.matdes.2013.11.063

Mohotti D; Ngo T; Mendis P; Raman SN, 2013, 'Polyurea coated composite aluminium plates subjected to high velocity projectile impact', Materials and Design, vol. 52, pp. 1 - 16, http://dx.doi.org/10.1016/j.matdes.2013.05.060

Mohotti D; Ali M; Ngo T; Lu J; Mendis P; Ruan D, 2013, 'Out-of-plane impact resistance of aluminium plates subjected to low velocity impacts', Materials and Design, vol. 50, pp. 413 - 426, http://dx.doi.org/10.1016/j.matdes.2013.03.023

Conference Papers

Fernando PLN; Mohotti D; Remennikov A; Hazell PJ; Wang H; Amin A, 2019, 'Stress wave propagation through an impedance-graded multi-material system', in 13th International Conference on Shock and Impact Loads on Structures, SILOS 2019, pp. 197 - 199

Mohotti D; Fernando PLN; Remennikov A; Uy B, 2017, 'Continuous impedance-graded metallic composite system for shock mitigation', Melbourne, presented at 6th International Conference on Design and Analysis of Protective Structures (DAPS), Melbourne

Reports

Mohotti D, 2020, Comprehensive numerical simulation of multiple charge interaction within a confined volume

Mohotti D; Ngo T; Mendis P; Yang E, 2015, Stress tri-axiality on steel and aluminium specimens to derive Johnson-Cook constitutive and fracture model parameters

Mohotti D; Mendis P; Ngo T, 2012, High strain rate Tests, Defence Materials Technology Centre (DMTC)