@article {Fri_Dec__5_09:15:45_WET_2003,
	title = {Developments with hybrid-{T}refftz stress and displacement elements},
	journal = {Computer Assisted Mechanics and Engineering Sciences},
	volume = {8},
	year = {2001},
	note = {<p>n/a</p>
},
	pages = {289-311},
	abstract = {<p>The paper reports on the work on hybrid-{T}refftz finite elements developed by the Structural Analysis Research Group, ICIST, Technical University of Lisbon. A dynamic elastoplastic problem is used to describe the technique used to establish the alternative stress and displacement models of the hybrid-{T}refftz finite element formulations. They are derived using independent time, space and finite element bases, so that the resulting solving systems are symmetric, sparse, naturally $p$-adaptive and particularly well suited to parallel processing. The performance of the hybrid-{T}refftz stress and displacement models is illustrated with a number of representative static and dynamic applications of elastic and elastoplastic structural problems.</p>
},
	keywords = {dynamics, elasticity, elastoplasticity, Hybrid-{T}refftz elements},
	author = {Freitas, J. A. T. and Cisma{\c s}iu, C.}
}
