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Mostrando ítems 1-9 de 9
Artículo
Bi-penalty stabilized technique with predictor–corrector time scheme for contact-impact problems of elastic bars
(Elsevier, 2021-11)
This paper presents a stabilization technique for the finite element modelling of contact-impact problems of elastic bars via a bi-penalty method for enforcing contact constraints while employing an explicit predictor–corrector ...
Artículo
Three-field partitioned analysis of fluid–structure interaction problems with a consistent interface model
(Elsevier, 2023)
This paper proposes a new Fluid–Structure Interaction computational framework. The coupling between the solid and an incompressible fluid is formulated by means of the method of localized Lagrange multipliers (LLM). Instead ...
Artículo
Thermal Modeling of the Port on a Refining Furnace to Prevent Copper Infiltration and Slag Accretion
(MDPI, 2021-11)
Fire refining of blister copper is a singular process at very high temperatures (~1400 K), which means the furnace is exposed to heavy thermal loads. The charge is directly heated by an internal burner. The impurities in ...
Artículo
Coupled fluid-solid thermal interaction modeling for efficient transient simulation of biphasic water-steam energy systems
(Elsevier, 2020-03)
This paper proposes a fluid-solid coupled finite element formulation for the transient simulation of water-steam energy systems with phase change due to boiling and condensation. As it is commonly assumed in the study of ...
Artículo
Partitioned formulation of contact-impact problems with stabilized contact constraints and reciprocal mass matrices
(John Wiley & Sons, 2021-09)
This work presents an efficient and accuracy-improved time explicit solution methodology for the simulation of contact-impact problems with finite elements. The proposed solution process combines four different existent ...
Artículo
Energy-conserving interface dynamics with asynchronous direct time integration employing arbitrary time steps
(Elsevier, 2023-08)
The derivation and implementation of an asynchronous direct time integration scheme for domain-decomposed finite element models is presented. To maximize clarity in the description of the proposed asynchronous integration, ...
Artículo
Displacement-based partitioned equations of motion for structures: Formulation and proof-of-concept applications
(John Wiley & Sons, 2023-11)
A new formulation for the displacement-only partitioned equations of motion for linear structures is presented, which employs: the partitioned displacement, acceleration, and applied force ( ); the partitioned block ...
Artículo
Accelerating the convergence of AFETI partitioned analysis of heterogeneous structural dynamical systems
(Elsevier, 2020-03)
Variationally based algorithms for the partitioned solution of structural mechanics problems are presented. Two key features of the present algorithms are the judicious application of the d’Alembert-Lagrange principal ...
Artículo
Large-Step Explicit Time Integration via Mass Matrix Tailoring
(John Wiley & Sons, 2020-04)
A method for tailoring mass matrices that allows large time-step explicit transient analysis is presented. It is shown that the accuracy of the present tailored mass matrix preserves the low-frequency contents while ...