Evaluating Topological Optimized Layout of Building Structures by Using Nodal Material Density Based Bilinear Interpolation

Abstract

This study presents a boundary representation of Eulerian-type in order to achieve conceptual structural layouts of building structures by relieving material discontinuities of structural topology optimization in comparison with classical ones. According to the partition of unity concept, a bilinear interpolation can be employed by nodal densities and shape functions with the use of discretization of four-node square elements and then material properties, i.e. here, densities in finite elements are not constant but variational values. As a result, the improvement of material continuity can be established as optimal topologies, and numerical singularity and zigzag material boundaries which may occur in classical topology optimization design are relieved. Numerical applications verify the efficiency of this method by evaluating this conceptual structural layout approach for designing building structures.

Nonlinear pushover analysis of concrete column reinforced by multi-layered, high strength steel UL700 plates

“…The objective of this research is to provide a reinforced structure of column structures based on reinforcing multi-layered and high performance steel plates that can be easily carried into sites, which offers improved workability and processability by applying an easy construction method, reducing the burden on designers and improving constructability. With respect to reinforcing existing structures by artificial materials [30,32], the direction of the present study is similar to previous CFRP studies [21,22,34].…”

Automatic Position Information of Web-Openings of Building Using Minimized Strain Energy Topology Optimization

“…In this study, proper web-opening's depositions of linear elastostatic structures are investigated using density distribution method or Solid Isotropic Microstructure with Penalization for Intermediate Density, that is, SIMP [8][9][10][11][12][13][14][15][16] of topology optimization methods, and efficiency of the proposed method is demonstrated.…”

Specimen Test of Large-Heat-Input Fusion Welding Method for Use of SM570TMCP

“…Since the rigidity and strength required for members increase according to recent trends of the large space and high rise such as diagrid [1][2][3][4] of architectural structures and the large span of steel bridges, steel materials gradually tend to aim at high strength, extremely thick plate, and high performance, and its application is introduced by Schroeter and Lehnert [5]. Such steel materials, while structured, require mutual connection between members and inevitably accompany welding during the work.…”