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球形孔泡沫铝合金压缩性能与理论模型
Compressive behavior of spherical pore Al alloy foam and its theoretical model
【摘要】 研究了孔隙率低于65%的球形孔泡沫铝合金的单轴压缩应力应变曲线、吸能能力和吸能效率,并与多面体形孔泡沫铝合金比较,表明球形孔使力学性能有较大提高。采用球形自洽模型研究了球形孔泡沫铝合金的屈服应力与孔隙率关系,与实验结果吻合良好,表明该模型可以有效地预测球形孔泡沫铝合金的屈服强度。
【Abstract】 The stress versus strain curves , energy absorption capacity and energy absorption efficiency of spherical pore Al alloy foam (Pr≤65%) under uniaxial compression were investigated. Compared with polygonal pore Al alloy foam, the mechanical properties of the foam with spherical pore is relatively higher. The relationship between yield stress and porosity is obtained with spherical self-consistent model.The prediction for yield stress of spherical pore Al alloy foam is in agreement with the experimental results.
【关键词】 球形孔泡沫铝合金；
球形自洽模型；
屈服应力；
【Key words】 spherical pore Al alloy foam； spherical self-consistent model； yield stress；
【Key words】 spherical pore Al alloy foam； spherical self-consistent model； yield stress；
【基金】 国家重点基础研究发展计划(2006CB601201);国家自然科学重点基金(No50231010);国家自然科学面上基金(No50471031)、(No50081002)(No19982001)
- 【文献出处】 材料热处理学报 ,Transactions of Materials and Heat Treatment , 编辑部邮箱 ,2006年06期
- 【分类号】TB383.4
- 【被引频次】12
- 【下载频次】264