Damith Mohotti

Senior Lecturer - Civil Engineering
Senior Lecturer

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.

Conference Papers
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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
2019
Al-Kubaisi O; Mohotti D; Al-Qassag O, 2019, 'Prediction of plywood deformation under the impact of windborne debris using Taguchi method', in IOP Conference Series: Materials Science and Engineering, IOP Publishing, Kerbala, Iraq, presented at IOP Conference Series: Materials Science and Engineering, Kerbala, Iraq, 04 November 2019 - 06 November 2019, http://dx.doi.org/10.1088/1757-899x/671/1/012096
2019
Mohotti D; Weerasinghe D, 2019, 'Numerical Modelling of High-Performance Fabrics with Emphasis on Rate-Dependency and Progressive Damage Failure Using Mechano-Rheological Constitutive Models', Melbourne, Australia, presented at 13th International Conference on the Mechanical Behaviour of Materials (ICM13), Melbourne, Australia, 16 December 2019
2019
Fenando PLN; Mohotti D; Zaghloul A, 2019, 'Blast Response of Explosively Welded Impedance Graded Multi-Metal Systems', Melbourne, Australia, presented at 3th International Conference on the Mechanical Behaviour of Materials (ICM13), Melbourne, Australia
2019
Mohotti D; Wijesooriya K, 2018, 'Predicting wind-induced pressure on slender tall structures using steady and unsteady RANS CFD analysis.', Torquay, Victoria, presented at 19th Australasian Wind Engineering Society Workshop, Torquay, Victoria, 04 April 2018
2018
Zaghloul A; RANAWEERA P; Mohotti D, 2018, 'Assessment of Blast Effects on Passengers in Underground Trains', Brisbane, Australia, presented at 25th Australasian Conference on the Mechanics of Structures and Materials, Brisbane, Australia
2018
Mohotti D; Wijesooriya K; Xing F, 2018, 'Dynamic performance of steel poles and its longitivity due to induced load from dynamic wind.', Brisbane, Australia, presented at 25th Australasian Conference on the Mechanics of Structures and Materials, Brisbane, Australia
2018
Wijesooriya K; Mohotti D, 2017, 'A Validated Numerical Approach in Wind design of Supper Tall Buildings', Kandy, Sri Lanka, presented at 8th International Conference on Structural Engineering and Construction Management, Kandy, Sri Lanka
2017
Mohotti D; Fernando PLN; Zaghloul A, 2017, 'Investigation of Possible Head Damages due to the Impact of a Cricket Ball', Sydney, Australia, presented at 9th Australasian Congress on Applied Mechanics (ACAM9), Sydney, Australia, 27 November 2017 - 29 November 2017
2017
Mohotti D; Razzaque S; Fernando PNL; Dias-da-Costa D, 2017, 'Numerical and analytical investigation of load transfer through eccentric columns with different cross sections', Adelaide, Australia, presented at 28th Biennial National Conference of the Concrete Institute of Australia, Concrete2017, Adelaide, Australia, 22 December 2017 - 25 December 2017
2017
Fernando PLN; Zaghloul A; Mohotti D, 2017, 'Experimental and numerical investigation of possible head damages due to the impact of a cricket ball', Kandy, Sri Lanka, presented at 8th International Conference on Structural Engineering and Construction Management, Kandy, Sri Lanka
2017
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
2017
Mohotti D; Ngo T; Uy B; Netherton M, 2015, 'Experimental Investigation of Response of Steel Plates due to Close-in Blast Loading from Spherical Liquid Explosive', Singapore, presented at 5th International Conference on Design and Analysis of Protective Structures (DAPS2015), Singapore
2015
Mohotti D; Danushka K; Mendis P, 2015, 'Wind design of slender tall buildings: CFD approach', Kandy, Sri Lanka, presented at 6th International Conference of Structural Engineering and Construction Management (ICSECM 2015), Kandy, Sri Lanka
2015
Mohotti D; Ngo T; Mendis T, 2015, 'Use of multi-layered composite systems in ballistic impact mitigation', Newcastle, Australia, presented at 3rd International Conference on Protective Structures (ICPS3), Newcastle, Australia, 03 February 2015
2015
Ngo T; Mohotti D; Remenikov A, 2015, 'Use of polyurea-auxetic composite system for protecting structures from close-in detonations', Newcastle, Australia, presented at 3rd International Conference on Protective Structures (ICPS3), Newcastle, Australia, 03 February 2015 - 06 February 2015
2015
Ngo T; Mohotti D; Remennikov A; Uy B, 2014, 'Response and failure mechanism of tubular steel columns subjected to close-range explosions', in 23rd Australasian Conference on the Mechanics of Structures and Materials, 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23), Byron Bay, Australia, pp. 1045 - 1050, presented at 23rd Australasian Conference on the Mechanics of Structures and Materials (ACMSM23), Byron Bay, Australia, 09 December 2014 - 12 December 2014
2014
Mohotti D; Mendis P; Ngo T, 2014, 'Application of computational fluid dynamics (CFD) in predicting the wind loads on tall buildings- A case study', Byron Bay, Australia, presented at 23rd Australasian Conference on the Mechanics of Structures and Materials, Byron Bay, Australia, Byron Bay, Australia, 09 December 2014 - 12 December 2014
2014
Mendis P; Mohotti D; Ngo T, 2014, 'Wind Design of Tall Buildings, Problems, Mistakes and Solutions', Melbourne, Australia, presented at 1 st International Conference on Infrastructure Failures and Consequences (ICIFC2014), Melbourne, Australia
2014
Mohotti D; Ngo T; Mendis P, 2012, 'Application of computational fluid dynamics (CFD) in analysis of tall buildings', Kandy, Sri Lanka, presented at International conference of structural engineering and construction management, Kandy, Sri Lanka
2012
Mohotti D; Ngo T; Mendis P, 2010, 'Numerical simulation of impact and penetration of ogvial shaped projectiles through steel plate structures', Kandy, Sri Lanka, presented at International Conference on Sustainable Build Environment (ICSBE-2011), Kandy, Sri Lanka
2010
Mohotti D; Lunmantara R; Ngo T; Mendis P, 2010, 'Improving the safety of buildings through an innovative sustainable façade system', Kandy, Sri Lanka, presented at International Conference on Sustainable Build Environment (ICSBE-2010), Kandy, Sri Lanka
2010
Journal articles
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Weerasinghe D; Mohotti D; Anderson J, 2021, 'Numerical Modelling of the Rate-sensitive Behaviour of High-performance Fabrics', Journal of Dynamic Behavior of Materials, vol. 7, pp. 107 - 126, http://dx.doi.org/10.1007/s40870-020-00274-4
2021
Wijesooriya K; Mohotti D; Amin A; Chauhan K, 2021, 'Wind loads on a super-tall slender structure: A validation of an uncoupled fluid-structure interaction (FSI) analysis', Journal of Building Engineering, vol. 35, http://dx.doi.org/10.1016/j.jobe.2020.102028
2021
Wijesooriya K; Mohotti D; Amin A; Chauhan K, 2021, 'Comparison between an uncoupled one-way and two-way fluid structure interaction simulation on a super-tall slender structure', Engineering Structures, vol. 229, http://dx.doi.org/10.1016/j.engstruct.2020.111636
2021
Somarathna HMCC; Raman SN; Mohotti D; Mutalib AA; Badri KH, 2021, 'Behaviour of concrete specimens retrofitted with bio-based polyurethane coatings under dynamic loads', Construction and Building Materials, vol. 270, http://dx.doi.org/10.1016/j.conbuildmat.2020.121860
2021
Wang H; Weerasinghe D; Mohotti D; Hazell PJ; Shim VPW; Shankar K; Morozov EV, 2021, 'On the Impact Response of UHMWPE Woven Fabrics: Experiments and Simulations', International Journal of Mechanical Sciences, pp. 106574 - 106574, http://dx.doi.org/10.1016/j.ijmecsci.2021.106574
2021
Fernando PLN; Mohotti D; Remennikov A; Hazell PJ; Wang H; Amin A, 2021, 'Stress propagation and debonding effects in impedance-graded multi-metallic systems under impact loading', International Journal of Protective Structures, vol. 12, pp. 3 - 21, http://dx.doi.org/10.1177/2041419620917709
2021
Mohotti D; Fernando PLN; Weerasinghe D; Remennikov A, 2020, 'Evaluation of effectiveness of polymer coatings in reducing blast-induced deformation of steel plates', Defence Technology, http://dx.doi.org/10.1016/j.dt.2020.11.009
2020
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
2020
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
2020
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
2020
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
2020
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
2020
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
2020
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
2020
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
2020
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
2019
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
2019
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
2019
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
2019
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
2019
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
2018
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
2018
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
2018
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
2018
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
2017
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
2017
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
2016
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
2015
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
2015
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
2015
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
2015
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
2015
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
2014
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
2014
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
2014
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
2013
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
2013
Reports
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Mohotti D, 2020, Comprehensive numerical simulation of multiple charge interaction within a confined volume
2020
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
2015
Mohotti D; Mendis P; Ngo T, 2012, High strain rate Tests, Defence Materials Technology Centre (DMTC)
2012
  • Australian Museum Eureka Prize for Outstanding Science in Safeguarding Australia
  • Engineering Excellence Award 2017, IESL NSW Chapter
  • Project Contribution Award, DMTC (Defence Materials Technology Centre)
  • DSTG Research Funding – Analysis of Structures under the Effects of Simultaneously Detonated Multiple Charges
  • CERDS- Development of novel multi-material systems
  • Global Partnership award, Blast resilient glass facades: South Hampton University , UK
  • DMTC (Defense Materials Technology Centre) Australia, new generation armour: Apr. 2010-Aug 2013
  • Protective Structures 
  • Advanced Engineering Simulations (FEA, CFD)
  • Structural Engineering 
  • Defence Technologies
  • Engineering Materials (Steel, Concrete, Polymer)
  • Wind Engineering (Structures)