A simple FEM formulation applied to nonlinear problems of impact with thermomechanical coupling

Maciel, Daniel Nelson; Cavalcante, João Paulo de Barros; Greco, Marcelo; Silva Filho, José Neres da

A simple FEM formulation applied to nonlinear problems of impact with thermomechanical coupling

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dc.contributor.author	Maciel, Daniel Nelson
dc.contributor.author	Cavalcante, João Paulo de Barros
dc.contributor.author	Greco, Marcelo
dc.contributor.author	Silva Filho, José Neres da
dc.date.accessioned	2020-11-30T23:17:07Z
dc.date.available	2020-11-30T23:17:07Z
dc.date.issued	2017
dc.description.resumo	The thermal effects of problems involving deformable structures are essential to describe the behavior of materials in feasible terms. Verifying the transformation of mechanical energy into heat it is possible to predict the modifications of mechanical properties of materials due to its temperature changes. The current paper presents the numerical development of a finite element method suitable for nonlinear structures coupled with thermomechanical behavior; including impact problems. A simple and effective alternative formulation is presented, called FEM positional, to deal with the dynamic nonlinear systems. The developed numerical is based on the minimum potential energy written in terms of nodal positions instead of displacements. The effects of geometrical, material and thermal nonlinearities are considered. The thermodynamically consistent formulation is based on the laws of thermodynamics and the Helmholtz free-energy, used to describe the thermoelastic and the thermoplastic behaviors. The coupled thermomechanical model can result in secondary effects that cause redistributions of internal efforts, depending on the history of deformation and material properties. The numerical results of the proposed formulation are compared with examples found in the literature	pt_BR
dc.identifier.citation	CAVALCANTE, J. P. B.; MACIEL, D.N.; GRECO, Marcelo; SILVA FILHO, J. N . A simple FEM formulation applied to nonlinear problems of impact with thermomechanical coupling. Latin American Journal of Solids and Structures, v. 14, p. 2439-2462, 2017. Disponível em: https://www.lajss.org/index.php/LAJSS/article/view/3737. Acesso em: 31 nov, 2020. http://dx.doi.org/10.1590/1679-78253737	pt_BR
dc.identifier.doi	10.1590/1679-7825373
dc.identifier.issn	1679-7817
dc.identifier.issn	1679-7825
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/30792
dc.language	en	pt_BR
dc.publisher	Associação Brasileira de Ciências Mecânicas	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Positional Formulation	pt_BR
dc.subject	Nonlinear analysis	pt_BR
dc.subject	Thermomechanical	pt_BR
dc.subject	Coupled problems	pt_BR
dc.subject	Impact	pt_BR
dc.title	A simple FEM formulation applied to nonlinear problems of impact with thermomechanical coupling	pt_BR
dc.type	article	pt_BR