研究了泡沫铝层合梁三点弯曲的载荷(P)-位移(δ)曲线、变形过程及面板破坏、夹芯剪切破坏、凹陷破坏等破坏模式.用极限载荷公式得到的计算值与实验值符合良好.实验所得的加载和卸载刚度(P/δ)与计算结果吻合较好.泡沫铝层合梁具有较低的密度((0.42～0.92)×103kg/m3)和很高的弯曲比刚度(E1/2/ρ).利用极限载荷公式建立了破坏模式图.
参考文献
| [1] | John Banhart, M.F.Ashby, N.A.Fleck, in Cellular Metals and Metal Foaming Technology, Edited by John Banhart, M.F.Ashby, N.A.Fleck (Germany, Verlag MIT, 2001)p.369, 387 |
| [2] | John.Barthart, M.F.Ashby, N.A.Fleck, in Metal foams and Porous Metal structures, Edited by John. Banhart, M.F.Ashby, N.A.Fleck (Germany, Verlag MIT, 1999) p.307,337 |
| [3] | L.J.Gibson, M.F.Ashby, Cellular Solids, Second Edition, (U.K., The Press Syndicate Of the University of Cambridge, 1999) p.350 |
| [4] | M.F.Ashby, A.G.Evans, N.A.Fleck, L.J.Gibson, J.W.Hutchinson, H.N.G.Wadley. Metal Foams: A Design Guide, (U.S.A., Butterworth-Heinemann, 2000) p.60 |
| [5] | Wu Zhaojin, He Deping, Changes in porosity of foamed aluminum during solidification, Chinese Science Bulletin, 45(18), 1667(2000) |
| [6] | Yang Donghui, He Deping, Porosity of Porous Al Alloys, Science in China (Series B), 44(4), 411(2001) |
| [7] | ZHENG Minjun, HE Deping, DAI Ge, Additional Force Field In the Cooling Process of Cellular Aluminum Alloy, Science in China (Series B), 45(6), 598～607(2002) |
| [8] | WANG Bin(王斌),HE Deping(何德坪),SHU Guangji(舒光冀),Properties of Compression and Energyabsorption of Foamed Aluminum(泡沫铝合金的压缩及能量吸收性能),Acta Metallurgica Sinica(金属学报),36(10),1037(2000) |
| [9] | WU Zhaojin(吴照金),HE Deping(何德坪),Research onthe deformation andthe energy absorption of cellular aluminum under compression(胞状铝的压缩变形和吸能性能研究),Journal of Applied Science(应用科学学报),19(4),357(2000) |
| [10] | HE Deping(何德坪),YU Xingquan(余兴泉),CHEN Feng(陈锋),Processing,Structure and Damping Properties of a New Type of Composites Material by P/MCs(P/MCs新型复合材料、制备、结构及阻尼性能),Journal of Material Research(材料研究学报),10(4),347(1996) |
| [11] | HE Deping(何德坪),WEN Desun(闻德荪),Zhang Yong(张勇),SHU Guangji(舒光冀),Infiltrating Process of Aluminum Melt in Porous Medium(铝熔体在多孔介质中的渗流过程),Journal of Material Research(材料研究学报),11(2),113(1997) |
| [12] | ZHENG Mingjun(郑明军),HE Deping(何德坪),Compression and Energy Absorption Properties of a Newtype Light Cellular Aluminum with High Strength(新型轻质高强度胞状铝合金压缩及能量吸收性能),Journal of Material Research(材料研究学报),16(5),473(2002) |
| [13] | C.Chen, A.M.Harte, N.A.Fleck, The plastic collapse of sandwich beams with a metallic foam core, International Journal of Mechanical Sciences, 43, 1483(2001) |
| [14] | T.M.McCormack, R.Miller, O.Kesler, L.J Gibson, Failure of sandwich beams with metallic foam cores,International Journal of Solids and Structures, 38, 4901(2001) |
| [15] | H.Bart-Smith, J.W.Hutchinson, A.G.Evans, Measurement analysis of the structural performance of cellular metal sandwich construction, International Journal of Mechanical Sciences, 43, 1945～1963(2001) |
| [16] | H.Bart-Smith, A.F.Bastawros, D.R. Mumm, A.G.Evans, D.J.Sypeck, H.N.G.Wadley, Compressive deformation and yielding mechanisms in cellular Al alloys determined using X-ray tomography and surface strain mapping, Acta Mater, 46(10), 3583～3592(1998) |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%