Buscar
Mostrando ítems 1-10 de 10
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
Inverse mass matrix for isogeometric explicit transient analysis via the method of localized Lagrange multipliers
(John Wiley & Sons, 2019-03)
A variational framework is employed to generate inverse mass matrices for isogeometric analysis (IGA). As different dual bases impact not only accuracy but also computational overhead, several dual bases are extensively ...
Ponencia
Inverse mass matrix via the method of localized lagrange multipliers
(National Technical University of Athens, 2017-06)
An efficient method for generating the mass matrix inverse is presented, which can be tailored to improve the accuracy of target frequency ranges and/or wave contents. The present method bypasses the use of biorthogonal ...
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
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
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
Explicit multistep time integration for discontinuous elastic stress wave propagation in heterogeneous solids
(2019-05)
A multistep explicit time integration algorithm is presented for tracking the propagation of discontinuous stress waves in heterogeneous solids whose subdomain-to-subdomain critical time step ratios range from tens to ...
Artículo
Inverse mass matrix via the method of localized Lagrange multipliers
(John Wiley & Sons, 2018-01)
An efficient method for generating the mass matrix inverse of structural dynamic problems is presented, which can be tailored to improve the accuracy of target frequency ranges and/or wave contents. The present method ...
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 ...