Poh Leong Hien

Dr Leong Hien POH is an Associate Professor in the Department of Civil and Environmental Engineering at the National University of Singapore. He obtained his B.Eng. and M.Eng. degrees from the National University of Singapore in 2003 and 2005 respectively. Before pursuing his PhD, he had worked in the Building and Construction Authority (Business Development Division). He received his Ph.D. in 2011 under a joint degree program between the National University of Singapore and the Eindhoven University of Technology.

Dr Poh is interested in developing material models that bridge across the micro and macro scales – where fine-scale fluctuations are incorporated efficiently at the coarse-scale for engineering applications. His research topics include mechanics of materials, damage mechanics, higher-order continua, multi-scale methods and homogenization techniques.

Qualifications

• Ph.D., National University of Singapore, Singapore, 2011
• Ph.D., Eindhoven University of Technology, Netherlands, 2011
• M.Eng. (Accelerated Master’s Program), National University of Singapore, 2005
• B.Eng. (First Class Honours), National University of Singapore, 2003

Honours & Awards

• Lee Kong Chian Graduate Scholarship, 2006 – 2010
• The Institution of Engineers Singapore Gold Medal, 2004

Research Interests

• Mechanics of materials
• Damage mechanics
• Higher-order continua
• Multi-scale methods and homogenization techniques

Selected Publications

• Wang, Z.P., Poh, L.H., Dirrenberger, J., Zhu, Y., Forest, S., Isogeometric shape optimization of smoothed petal auxetic structures via computational periodic homogenization. Computer Methods in Applied Mechanics and Engineering. Article in Press.
• Wang, Y., Poh, L.H., 2017. Velocity effect on the bending failure of ice sheets against wide sloping structures. Journal of Offshore Mechanics and Arctic Engineering 139, 051501.
• Biswas, R., Poh, L.H., 2017. A micromorphic computational homogenization framework for heterogeneous materials. Journal of the Mechanics and Physics of Solids 102, 187-208.
• Zhu, L., Poh, L.H., 2017. On an energetic or dissipative isotropic hardening mechanism for thermo-mechanical models in cyclic loading. International Journal of Mechanical Sciences 122, 297-307.
• Teo, F.C., Poh, L.H., Pang, S.D., 2017. On the flexural failure of thick ice against sloping structures. Journal of Offshore Mechanics and Arctic Engineering 139, 041501.
• Kumara, D., Biswas, R., Poh, L.H., Wahab, M.A., 2017. Fretting fatigue stress analysis in heterogeneous material using direct numerical simulations in solid mechanics. Tribology International 109, 124-132.
• Wang, S., Le, H.T.N., Poh, L.H., Quek, S.T., Zhang, M.H., 2017. Effect of high strain rate on compressive behavior of strain hardening cement composite in comparison to that of ordinary fiber-reinforced concrete. Construction and Building Materials 136, 31-43.
• Poh, L.H., Phan, V.T., 2016. Numerical implementation and validation of a consistently homogenized higher order plasticity model. International Journal for Numerical Methods in Engineering 106, 454-483.
• Wang, Y., Poh, L.H., Yue, Q., 2016. Reinvestigation of ice-induced vibrations of conical jacket structures using dimensionless parameters. International Journal of Offshore and Polar Engineering 26, 327-332.
• Poh, L.H., Sun, G., 2016. Localizing gradient damage model with decreasing interactions. International Journal for Numerical Methods in Engineering 110, 503-522.
• Zhu, Y., Poh, L.H., 2016. A finite deformation elasto-plastic cyclic constitutive model for ratchetting of metallic materials. International Journal of Mechanical Sciences 117, 265-274.
• Wang, S., Le, H.T.N., Poh, L.H., Feng, H., Zhang, M.H., 2016. Resistance of high-performance fiber-reinforced cement composites against high-velocity projectile impact. International Journal of Impact Engineering 95, 89-104.
• Sun, G., Poh, L.H., 2016. Homogenization of intergranular fracture towards a transient gradient damage model. Journal of the Mechanics and Physics of Solids 95, 374-392.
• Zhu, Y., Kang, G., Yu, C., Poh, L.H., 2016. Logarithmic rate based elasto-viscoplastic cyclic constitutive model for soft biological tissues. Journal of the Mechanical Behavior of Biomedical Materials 61, 397-409.
• Poh, L.H., Peerlings, R.H.J., 2016. The plastic rotation effect in an isotropic gradient plasticity model for applications at the meso scale. International Journal of Solids and Structures 78, 57-69.
• Poh, L.H., 2013. Scale transition of a higher order plasticity model – a consistent homogenization theory from meso to macro. Journal of the Mechanics and Physics of Solids 61, 2692-2710.
• Poh, L.H., Peerlings, R.H.J., Geers, M.G.D., Swaddiwudhipong, S., 2013. Towards a homogenized plasticity theory which predicts structural and microstructural size effects. Journal of the Mechanics and Physics of Solids 61, 2240-2259.
• Poh, L. H., Peerlings, R. H. J., Geers, M. G. D., Swaddiwudhipong, S., 2013. Homogenization towards a grain-size dependent plasticity theory for single slip. Journal of the Mechanics and Physics of Solids 61, 913-927.
• Peerlings, R.H.J., Poh, L.H., Geers, M.G.D., 2012. An implicit gradient plasticity-damage theory for predicting size effects in hardening and softening. Engineering Fracture Mechanics 95, 2-12.
• Poh, L. H., Peerlings, R. H. J., Geers, M. G. D., Swaddiwudhipong, S., 2011. An implicit tensorial gradient plasticity model – formulation and comparison with a scalar gradient model. International Journal of Solids and Structures 48, 2595-2604.
• Poh, L. H., Swaddiwudhipong, S., 2009. Over-nonlocal gradient enhanced plastic-damage model for concrete. International Journal of Solids and Structures 46, 4369-4378.
• Poh, L. H., Swaddiwudhipong, S., 2009. Gradient-enhanced softening material models. International Journal of Plasticity 25, 2094-2121.
• Swaddiwudhipong, S., Poh, L. H., Hua, J., Liu, Z. S., Tho, K. K., 2005. Modeling nano-indentation tests of glassy polymers using finite elements with strain gradient plasticity. Materials Science and Engineering: A 404, 179-187.