Characterization of Steel Foams for Structural Components

Metals

Brooks H. Smith¹  Stefan Szyniszewski³  Jerome F. Hajjar²  Benjamin W. Schafer³ 

[1] Department of Civil and Environmental Engineering, University of Massachusetts, 223 Marston Hall, 130 Natural Resources Road, Amherst, MA 01003, USA;400 Snell Engineering Center, Department of Civil and Environmental Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115-5000, USA;Department of Civil Engineering, The Johns Hopkins University, 203 Latrobe Hall, 3400 N. Charles Street, Baltimore, MD 21218-2682, USA;

关键词: steel foam;    metal hollow sphere;    experiment;    tension;    fracture;    poisson’s ratio;    panel;   

DOI  :  10.3390/met2040399

来源: mdpi

【 摘 要 】

Experimentally measured mechanical properties of hollow sphere steel foam are the subject of this paper. The characterization of the hollow sphere foam encompasses compressive yield stress and densification strain, compressive plastic Poisson’s ratio, and compressive unloading modulus, as well as tensile elastic modulus, tensile unloading modulus, tensile yield stress, and tensile fracture strain. Shear properties are also included. These tests provide sufficient information to allow calibration of a macroscopic, continuum constitutive model. Calibrated foam plasticity parameters are tabulated, and unique feature of foam plasticity are explained. Also, initial development of mesoscale simulations, which explicitly model voids and sintered hollow spheres, is reported. This work is part of a larger effort to help the development of steel foam as a material with relevance to civil engineering applications.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.