【摘要】 研究了泡沫金属的机械阻尼性能，表明泡沫金属是一种具有高能量吸收特性的轻质高阻尼材料，其阻尼特征表现为与应变振幅密切相关，而与应变频率无显著关系的非线性内耗。泡沫金属的孔隙结构（孔径、孔隙率）对其阻尼性能有一定的影响，随孔径的减小和孔隙率的增加其内耗Ｑ－１增大。更多还原

【Abstract】 The mechanical damping properties of metallic foams has been studied in the paper.It is found that metallic foams is a light high-damping material with great energy absorbing characteristics.The damping capacity (Q-1) of metallic foams is not related to the frequencies but vary with amplitudes.The damping properties are affected by pore-structure to some extent,the damping capacity(Q-1) is raised when pore-diameter is decreased and porosity is increased.更多还原