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研究在室温条件下不同相对密度、不同预拉伸程度的泡沫镍的准静态压缩性能。准确地测定包括屈服强度、弹性模量、能量吸收密度和能量吸收效率等压缩性能。结果表明,屈服强度、弹性模量和能量吸收密度的压缩性能随着泡沫镍的相对密度的增加而增加。压缩性能对泡沫镍基体的拉伸程度较为敏感,屈服强度、弹性模量和能量吸收密度随着预拉伸程度的增加而降低。然而,能量吸收效率对相对密度和预拉伸程度并不敏感。能量吸收效率在坍塌平台区末期达到最大值。
The quasi-static compressive properties of foamed nickel with different relative densities and different pretension degrees at room temperature were studied. Compressive properties such as yield strength, elastic modulus, energy absorption density and energy absorption efficiency are accurately measured. The results show that the compressive properties of yield strength, elastic modulus and energy absorption density increase with the relative density of nickel foam. Compressive properties of the foam nickel matrix is more sensitive to the degree of tension, yield strength, elastic modulus and energy absorption density decreases with the degree of pre-stretch increases. However, energy absorption efficiency is not sensitive to relative density and pre-stretch. The energy absorption efficiency reaches the maximum at the end of the collapse platform area.