FINITE ELEMENT MODELING OF STEEL PLATES UNDER MONOTONIC LOADING

Steel plate fuses can be used as energy dissipating devices in earthquake-resistant structures. After an earthquake, the structure remains essentially elastic and only the deformed fuse require replacement. This report simulates the monotonic response of steel plate specimens. The effects of different inputs such as imperfection, shape and size of the fuse openings, and different meshing types on yield strength, deformation, stress distribution, and displacement are studied by using ANSYS Mechanical APDL. The study found that increasing imperfection increases displacement and decreases yield strength. It was also concluded that as the hole size in the steel plate is increased, the fuse yield strength is slightly increased to a point then is decreased. Double diamond shape showed better response in terms of displacement and stress distribution, this is because of the link shape formed by the two holes. Finer quadrilateral meshing method provide precise simulation results over longer time.

FINITE ELEMENT MODELING OF STEEL PLATES UNDER MONOTONIC LOADING

Steel plate fuses can be used as energy dissipating devices in earthquake-resistant structures. After an earthquake, the structure remains essentially elastic and only the deformed fuse require replacement. This report simulates the monotonic response of steel plate specimens. The effects of different inputs such as imperfection, shape and size of the fuse openings, and different meshing types on yield strength, deformation, stress distribution, and displacement are studied by using ANSYS Mechanical APDL. The study found that increasing imperfection increases displacement and decreases yield strength. It was also concluded that as the hole size in the steel plate is increased, the fuse yield strength is slightly increased to a point then is decreased. Double diamond shape showed better response in terms of displacement and stress distribution, this is because of the link shape formed by the two holes. Finer quadrilateral meshing method provide precise simulation results over longer time.

A Quadrilateral Meshing Method for Shear-Wall Structures

In this paper, a meshing scheme for shear-wall structures is developed based on the paving method and associated with the mapping and geometry decomposition method. The present method would combine the advantages of free mesh, such as strong generality for complicated structures, and mapping mesh, such as outstanding efficiency for some specific geometries, and result in the following four merits: (1) theoretically suitable for arbitrary shear wall and slab; (2) the mesh is compatible, i.e., the adjacent boundary of the shear-wall and slab has identical nodes; (3) all or most of the elements are quadrilateral which is important for finite element analysis; (4) the mesh is uniform and homogeneous, and the transition between different mesh size would be automatically smoothed. Finally, some meshing examples for complicated building structures are presented to illustrate the validity of this meshing scheme.