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泡沫金属是一种综合性能优异的工程材料。该文运用八面体分析模型,分析了在扭矩作用下泡沫金属多孔体内部棱柱的受力状态,得出了泡沫金属的力学关系表征和泡沫金属材料在受到扭矩作用时的强度设计判据。结果表明:在多孔体受到扭矩作用而产生破坏时,可用其孔隙率、对应致密材质的抗拉强度以及对应致密构件的抗扭截面模量(扭转截面系数)等基本参量来描述泡沫金属承受的名义扭矩。
Foam metal is a comprehensive performance of engineering materials. In this paper, the octahedral analysis model was used to analyze the force state of the prismatic metal foams under the action of torque. The mechanical characteristics of the foamed metal and the strength design criteria of the foamed metal under torsion were obtained. The results show that when the porous body is under the action of torque, the porosity, the tensile strength of the dense material and the torsional modulus (torsional section modulus) of the corresponding compact part can be used to describe the metal foam Nominal torque.