Compressive properties and energy absorption characteristics of open-cell nickel foams

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• 作者：Su-feng FAN^a ; ^b ; Tao ZHANG^a ; Kun YU^a ; ^b ; ^{yukun2010@csu.edu.cn} ; Hong-jie FANG^a ; Han-qing XIONG^b ; Yi-long DAI^b ; Jia-ji MA^b ; Da-yue JIANG^b ; Hua-long ZHU^b
• 关键词：nickel foam ; compressive property ; relative density ; pre-stretching degree
• 刊名：Transactions of Nonferrous Metals Society of China
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：27
• 期：1
• 页码：117-124
• 全文大小：3114 K
• 卷排序：27

文摘

Open-cell nickel foams with different relative densities and pre-stretching degrees were subjected to room temperature quasi-static compressive tests to explore their compressive properties. The compressive properties of the nickel foams including yield strength, elastic modulus, energy absorption density and energy absorption efficiency were calculated accurately. The results show that the compressive properties of yield strength, elastic modulus and energy absorption density increase with the increase of relative density of nickel foams. The compressive properties are sensitive to the pre-stretching degree, and the values of yield strength, elastic modulus and energy absorption density decrease with the increase of pre-stretching degree. However, the energy absorption efficiency at the densification strain state exhibits the independence of relative density and pre-stretching degree. The value of energy absorption efficiency reaches its peak when the strain is at the end of the collapse plateau region.