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Strength and deformation of arbitrary beam sections using adaptive FEM

Per Kettil (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik) ; Juan Jose Rodenas Garcia ; Claudio Aguilera Torres ; Nils-Erik Wiberg (Institutionen för tillämpad mekanik, Material- och beräkningsmekanik)
Computers & Structures (2006)
[Artikel, refereegranskad vetenskaplig]

Still today, structural design is often based on simplified hand-calculation formulas for special cases, which is tedious to apply and do not cover more general situations. To improve the situation, the paper presents a FE-program for analysis of strength and deformation of arbitrary beam cross sections of steel and concrete loaded by all six force and moments components. The program is based on (1) an enhanced beam theory with three-dimensional state of stress, (2) multi-surface elasto-plasticity for modeling of the materials (3) efficient numerical algorithms (mesh adaptive FEM, arc-length method, etc). The paper presents the theory behind the program and some initial numerical testing to show how the program works. The initial numerical testing on steel and reinforced concrete beam sections loaded in bending, shear and torsion show promising results.

Nyckelord: FEM, adaptive, beam, section, reinforced concrete, steel, bending, shear, torsion

Denna post skapades 2006-08-25.
CPL Pubid: 22061


Institutioner (Chalmers)

Institutionen för tillämpad mekanik, Material- och beräkningsmekanik


Annan samhällsbyggnadsteknik

Chalmers infrastruktur