泡沫金属在弯矩作用下的表征分析

Analysis of Porous Open-cell Metal Foams Under Bending Moment

在对泡沫金属单向拉伸和压缩性能的研究基础上,进一步探讨该材料在弯矩作用下的力学行为。结果表明:在泡沫金属材料受到弯矩作用而产生破坏时,其承受的名义弯矩大小可表达为多孔体孔率的函数形式,且该数理关系可视为该材料在单向拉压载荷作用下产生破坏时所承受名义应力大小表征的延伸。

Based on the performances of uniaxial tension and compression for porous metal foams, the mechanical behavior of these materials under bending moment was further investigated. The result shows that, the applied nominal bending moment can be expressed as a function of the porosity for the foamed metals under bending moment while the porous body endures the fracture, and this mathematical-physical relationship may be regarded as the extension of the expression about the relationship between the maximal nominal stress and the porosity for these materials under uniaxial tensile and compressive loads.