A direct FEM approach to model mesoscale concrete and connect non-matching meshes in multiscale analysis

Autor: Welington Hilário Vieira, Humberto Breves Coda, Rodrigo Ribeiro Paccola

Publikováno v: Revista IBRACON de Estruturas e Materiais, Vol 17, Iss 1 (2023)

Abstract The mechanical degradation of concrete structures is a phenomenon dependent on the material heterogeneity observed at mesoscale. As the mechanical degradation is a localized phenomenon, structural members and structures may be simulated usin

Externí odkaz: https://doaj.org/article/20d13ccd5a454ec89b4a5b694dd1d66b

A simple method for non-linear analysis of steel fiber reinforced concrete = Um método simples para a análise não-linear de concreto reforçado com fibras de aço

Autor: Leandro Vanalli, Rodrigo Ribeiro Paccola, Mario Rogerio Scoaris, Humberto Breves Coda

Publikováno v: Acta Scientiarum: Technology, Vol 32, Iss 4, Pp 367-374 (2010)

This paper proposes a physical non-linear formulation to deal with steel fiber reinforced concrete by the finite element method. The proposed formulation allows the consideration of short or long fibers placed arbitrarily inside a continuum domain (m

Externí odkaz: https://doaj.org/article/442ad8e05f3b44988b66562879478b2f

Análise não linear física de placas e cascas anisotrópicas laminadas acopladas ou não com meio contínuo tridimensional viscoelástico através da combinação entre o MEC e o MEF

Autor: Rodrigo Ribeiro Paccola

Publikováno v: Biblioteca Digital de Teses e Dissertações da USPUniversidade de São PauloUSP.

Apresenta-se neste trabalho, uma formulação de cascas laminadas anisotrópicas enrijecidas ou não, considerando-se não-linearidade física com lei de fluxo não-associativa e acoplamento com meio contínuo tridimensional viscoelástico. Para tant

Externí odkaz: http://www.teses.usp.br/teses/disponiveis/18/18134/tde-28092006-103448/

Alternative multiscale material and structures modeling by the finite-element method

Autor: Rodrigo Ribeiro Paccola, Rodolfo André Kuche Sanches, Humberto Breves Coda

Publikováno v: Engineering with Computers. 38:311-329

In this study, we present an alternative finite element to multiscale analysis. In this strategy, strain energy comes only from semi-discrete or lattice elements immersed in a continuum without stiffness, enabling mechanical analysis from molecular s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3bde7186f5690adde55941166b53a99d
https://doi.org/10.1007/s00366-020-01148-y

A conjugate modal force strategy for instability analysis of thin-walled structures: an unconstrained vector positional finite element approach

Autor: Rodrigo Ribeiro Paccola, Humberto Breves Coda, Henrique Barbosa Soares

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Latin American Journal of Solids and Structures v.18 n.2 2021
Latin American journal of solids and structures
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)
instacron:ABCM

The importance of knowing critical loads and post-critical behavior of thin-walled structures motivates the development of several scientific and practical studies. Most references are concerned with stability analysis for small displacements (first

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::191cf3f31115b2b506f81e7afa95ad7d