采用多参考最小二乘复频法对具有相同结构的AZ91D镁合金试件和A380铝合金试件进行模态参数识别.在同等激励脉冲输入条件下进行2种材料时域激励响应特征的多特征点对比测试,比较AZ91D镁合金替换A380铝合金前后试件结构动力学性能的差异,通过整体频响函数和激励响应特性对AZ91D镁合金阻尼减振的工程实际效果进行评价.结果表明:在几何结构相同的情况下,2种材料的固有频率和固有振型模态参数相似,AZ91D镁合金试件具有更好的模态阻尼比.但由于镁合金材料刚性较低,仅通过直接的材料替换,镁合金材料的高阻尼减振性难以在实际工程中得到有效表现.
参考文献
| [1] | CLOW B B .Magnesium industry review[J].Advanced Materials & Processes,1996,150(04):2. |
| [2] | LAMBRI O A;RIEHEMANN W;TROJANOVA Z .Mechanical spectroscopy of commercial AZ91 magnesium alloy[J].Scripta Materialia,2001,45(12):1365-1371. |
| [3] | Nicholas Jeal .High-Performance Magnesium[J].Advanced Materials & Processes,2005(9):65-67. |
| [4] | B. Wolf;C. Fleck;D. Eifler .Characterization of the fatigue behaviour of the magnesium alloy AZ91D by means of mechanical hysteresis and temperature measurements[J].International Journal of Fatigue,2004(12):1357-1363. |
| [5] | X. N. Zhang .Effect of reinforcements on damping capacity of pure magnesium[J].Journal of Materials Science Letters,2003(7):503-505. |
| [6] | NISHIYAMA N;ASANO S .Evaluation of amplitude dependence of internal friction in high-damping metals[J].Journal of the Japan Institute of Metals,2001,65(02):109-114. |
| [7] | GOKEN J;RIEHEMANN W .Damping behavior of AZ91 magnesium alloy with cracks[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2004,370(1/2):417-421. |
| [8] | Wan, DQ;Wang, JC;Lin, L;Feng, ZG;Yang, GC .Damping properties of Mg-Ca binary alloys[J].Physica, B. Condensed Matter,2008(13/16):2438-2442. |
| [9] | 张津,陶艳玲,孙智富,付丽娟,施全.镁合金AZ91D的阻尼减振性能[J].机械工程学报,2006(10):186-189. |
| [10] | 刘楚明,纪仁峰,周海涛,陈明安.镁及镁合金阻尼特性的研究进展[J].中国有色金属学报,2005(09):1319-1325. |
| [11] | Sp. G. Pantelakis;N. D. Alexopoulos;A. N. Chamos .Mechanical Performance Evaluation of Cast Magnesium Alloys for Automotive and Aeronautical Applications[J].Journal of engineering materials and technology,2007(3):422-430. |
| [12] | SONG G .Recent progress in corrosion and protection of magnesium alloys[J].Advanced Engineering Materials,2005,7(07):563-586. |
| [13] | Joseph C. Benedyk .Magnesium Advances in Automotie applications[J].Light Metal Age,2005(3):36-38. |
| [14] | Magnesium alloys cast into auto powertrain components[J].Advanced Materials & Processes,2004(8):60-61. |
| [15] | 曾荣昌,柯伟,徐永波,韩恩厚,朱自勇.Mg合金的最新发展及应用前景[J].金属学报,2001(07):673-685. |
| [16] | 师汉民;谌刚;吴雅.机械振动系统-分析、测试、建模与对策[M].武汉:华中科技大学出版社,1992:293-305. |
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