The unsymmetric finite element formulation and variational incorrectness

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Rajendran, S. (School of Mechanical and Aerospace Engineering, Nanyang Technological University)

Rajendran, S. and Liew, K.M. (2003), "A novel unsymmetric 8-node plane element immune to mesh distortion under a quadratic field", Int. J. Numer. Meth. Eng., 58, 1718-1748
Rajendran, S. and Subramanian, S. (2004), "Mesh distortion sensitivity of 8-node plane elasticity elements based on parametric, metric, parametric-metric, and metric-parametric formulations", Struct. Engi. Mech., 17, 767-788 https://doi.org/10.12989/sem.2004.17.6.767
Ooi, E.T., Rajendran, S. and Yeo, J.H. (2004), "A 20-node hexahedron element with enhanced distortion tolerance", Int. J. Numer. Meth. Eng., 60, 2501-2530 https://doi.org/10.1002/nme.1056
Prathap, G. and Mukherjee, S. (2004), "Management-by-stress model of finite element computation", Research Report CM 0405, CSIR Centre for Mathematical Modelling and Computer Simulation, Bangalore, November
Liew, K.M., Rajendran, S. and Wang, J. (2006), "A quadratic plane triangular element immune to quadratic mesh distortions under quadratic displacement fields", Comput. Meth. Appl. Mech. Eng., 195, 1207-1223 https://doi.org/10.1016/j.cma.2005.04.012
Prathap, G., Senthilkumar, V. and Manju, S. (2006), "Mesh distortion immunity of finite elements and the best-fit paradigm", Sadhana, 31, 505-514 https://doi.org/10.1007/BF02715909

Use of unsymmetric finite element method in impact analysis of composite laminates vol.47, pp.4, 2011, https://doi.org/10.1016/j.finel.2010.12.016