Finite Elemente Analyse von Stahlbetonplatten

Thoma, Karel; Roos, Patrick; Borkowski, Gregor

doi:10.1002/best.201400047

Cited by 4 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The following sections focus on the modeling of the localized crack. Regarding the constitutive model of the shell elements, the reader is referred to References 12 and 13.…”

Section: Mechanical and Numerical Modelmentioning

confidence: 99%

“…The overall structure is discretized utilizing layered Shell181 elements with three translational and three rotational degrees of freedom (DOFs) in the finite element (FE) software Ansys Mechanical APDL. 10 The nonlinear behavior of the reinforced concrete shell elements is modeled with a user-defined material based on the Cracked Membrane Model 11 and the Tension Chord Model (TCM), 3 implemented into ANSYS Mechanical APDL by Thoma et al 12,13 Rotational springs are introduced at the predefined position of the localized crack (see Section 2), according to Figure 3. They allow for modeling a concentrated rotation at the crack location.…”

Section: Structural Modelingmentioning

confidence: 99%

See 1 more Smart Citation

Rotational springs for localized crack modeling in structural concrete

Näsbom

Thoma

Weber

et al. 2023

Structural Concrete

Self Cite

View full text Add to dashboard Cite

This paper presents a mechanical and numerical approach to model localized deformations occurring in concrete structures with less than minimum reinforcement. The presented models are based on, and validated against large‐scale experiments conducted in a previous study to investigate the behavior of a less than minimally reinforced slab in the framework of the structural safety assessment of an existing cut and cover tunnel. The model deploys rotational springs embedded in a nonlinear finite element analysis to capture deformations concentrating in an inclined crack. An iterative solution procedure ensures equilibrium and compatibility in the inclined crack section by adjusting the spring stiffnesses, which depend on the acting loads. A case study shows that the localized crack has a minor effect on the global structural behavior. In contrast, localization strongly influences deformations and stress resultants in the crack, and compressive membrane action significantly impacts the load–deformation behavior of the localized crack, which is relevant particularly for the shear strength.

show abstract

“…The following sections focus on the modeling of the localized crack. Regarding the constitutive model of the shell elements, the reader is referred to References 12 and 13.…”

Section: Mechanical and Numerical Modelmentioning

confidence: 99%