Geometrical non-linear analysis of fiber reinforced elastic solids considering debounding

Paccola, Rodrigo Ribeiro; Neto, Dorival Piedade; Coda, Humberto Breves

doi:10.1016/j.compstruct.2015.07.097

Cited by 15 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Yet, both meshes occupy the same volume. Although high degree of refinement is required to represent the expansive stresses at the interface of steel and concrete, the proposed approach do not increase any degree of freedom for particle simulation (see, for example, works of [42,44]).…”

Section: Non-uniform Corrosion Model Validationmentioning

confidence: 99%

See 1 more Smart Citation

Cross-section modeling of the non-uniform corrosion due to chloride ingress using the positional finite element method

Ramos

Carrazedo

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

In this paper, we propose an original and alternative FEM strategy to simulate the expansion and damage in cross sections of concrete elements due to non-uniform corrosion associated with chloride ingress. The strategy embed two-dimensional particle elements in two-dimensional matrix elements to simulate the stress distribution in the steel/concrete interface. This approach is different from the usual ones in which the steel rebar is replaced by forces and the contribution of the reinforcement stiffness is neglected. The reinforced concrete cross section is made by the composition of matrix and particle elements by means of nodal correspondence. This ensures that the number of degrees of freedom is not affected by the reinforcement, which makes the technique highly economical from the numerical point of view. A damage model contributes to the process of concrete degradation due to corrosion. The numerical applications ensure the accuracy of the developed model, showing its applicability in the analysis of non-uniform corrosion propagation in cross sections of reinforced concrete structures.

show abstract

Section: Non-uniform Corrosion Model Validationmentioning

confidence: 99%

“…There are several techniques to incorporate reinforcement stiffness into the concrete matrix. The embedded technique presents satisfactory results in fiber reinforced composites [40][41][42][43]. A natural evolution of the fiber embedment is the particle embedment in concrete matrix [44].…”

Section: Introductionmentioning

confidence: 99%

Cross-section modeling of the non-uniform corrosion due to chloride ingress using the positional finite element method

Ramos

Carrazedo

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…Reinforced composite materials, such as concrete, are easily modelled by the Positional FEM employing embedded techniques. With this technique, the structure stiffness is composed by the contribution of the domain (concrete matrix), fiber (rebars) and particle elements (coarse aggregates), and does not require nodal coincidence between discretizations, maintaining the overall number of degrees of freedom (Vanalli et al, 2008;Radtke et al, 2010;Radtke et al, 2011;Sampaio et al, 2013;Paccola et al, 2015;Paccola and Coda, 2016;Ramos and Carrazedo, 2020).…”

Section: Introductionmentioning

confidence: 99%

Modeling Particles Elements in Damaged Reinforced Concrete Structures

Ramos

Carrazedo

Paccola

2021

Lat. Am. j. solids struct.

Self Cite

View full text Add to dashboard Cite

In this paper, we introduce a finite element mesoscale modeling of damaged concrete structures, based on nodal positions. The mesoscale modeling consists of particle and fiber finite elements embedded in matrix finite elements. While the matrix elements represent the cement matrix, particle elements are used to simulate the coarse aggregates and fiber elements are used for reinforcement rebars. The embedded theory is used to immerse the reinforcement (both particle and fiber elements) without increasing the total number of degrees of freedom. This strategy does not require nodal coincidence, allowing randomly distribute the coarse aggregates. The materials nonlinear behavior is considered by a scalar damage model for the cement matrix and coarse aggregates, and one-dimensional elastoplastic model is used for the steel rebars. Four examples are presented, with good correlation between numerical and experimental results. It is shown that structures simulated with particulate elements could endure higher loads for the same displacement, although the maximum force is obtained in models without inclusion of particle elements.

show abstract

“…O MEFP teve início com os trabalhos de Bonet et al (2000) e Coda (2003), que propuseram uma formulação para análise não-linear geométrica de estruturas, a partir daí diversos outros trabalhos foram desenvolvidos para análise não-linear geométrica de treliças, pórticos, cascas, cascas laminadas, sólidos reforçados com fibras perfeitamente aderentes e considerando escorregamento e sólidos reforçados com partículas (CODA; GRECO, 2004;PACCOLA, 2007;CODA et al, 2013;SAMPAIO et al, 2013;PACCOLA et al, 2015;.…”

Section: Introductionunclassified

Modelagem da expansão devido à reação álcali-agregado de concreto armado e reforçado com fibras

Posterlli¹

View full text Add to dashboard Cite

Nestes agradecimentos, antes de qualquer coisa, devo toda a minha gratidão a Deus, por ter me alicerçado durante todo este árido caminho. Foi Nele que encontrei a paz e a serenidade necessários nos momentos de angústia e aflição, além de ser Ele a minha luz e o meu norte nos momentos de escuridão. Agradeço a todos os meus familiares que contribuíram, cada um à sua maneira, para que eu pudesse concluir esta etapa em minha vida. Neste ponto, faço menção especial aos meus pais, que contribuíram de maneira imensurável não só para a realização deste trabalho, mas também em todos os aspectos de minha vida, contribuindo de maneira essencial para a formação da pessoa que sou hoje. De forma especial também agradeço aos professores da Escola de Engenharia de São Carlos, os quais contribuíram não apenas para a minha formação acadêmica, mas também me incentivaram na constante busca por conhecimento. Agradeço ainda aos amigos que tive o prazer de fazer ao longo destes sete anos em São Carlos, por fazerem com que esta longa caminhada fosse mais leve e alegre. Agradeço ao Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) pela bolsa de mestrado concedida. Por fim, agradeço também a todos os funcionários da Escola de Engenharia de São Carlos, especialmente os do Departamento de Engenharia de Estruturas que contribuíram, ainda que indiretamente, para que este trabalho fosse realizado. Palavras-chave: reação álcali-agregado, método dos elementos finitos posicional, modelo paramétrico, concreto armado e reforçado com fibras ABSTRACT POSTERLLI, M. C. Modeling of expansion due to alkali-aggregate reaction of reinforced concrete and fiber reinforced concrete. 2017. p.157. Dissertation (M. Sc. in Civil Engineering (Structures)

show abstract

Geometrical non-linear analysis of fiber reinforced elastic solids considering debounding

Cited by 15 publications

References 29 publications

Cross-section modeling of the non-uniform corrosion due to chloride ingress using the positional finite element method

Cross-section modeling of the non-uniform corrosion due to chloride ingress using the positional finite element method

Modeling Particles Elements in Damaged Reinforced Concrete Structures

Modelagem da expansão devido à reação álcali-agregado de concreto armado e reforçado com fibras

Contact Info

Product

Resources

About