Evaluation of the Dynamic Characteristics of AZ91D Crankcase Covers and Boxes
Source abstract
Abstract
Dynamic tests are performed on similarly structured crankcase covers and boxes made of AZ91D magnesium and A380 aluminum alloys. The real vibration and noise control effect of an AZ91D magnesium alloy is evaluated, based on the behavior of the integral frequency response function, which is derived from the measured surface vibrations of the crankcase cover under operating conditions. The results indicate that crankcase covers and boxes made of AZ91D magnesium and A380 aluminum alloys with the same geometry possess similar normal characteristics. Both materials are interchangeable. However, the stiffness of AZ91D crankcase covers and boxes is poor. It is also difficult to obtain good engineering vibration and noise effects in the real structure due to an AZ91D high damping capacity. At the same excitation and frequency response at different structure characteristics, the measurement analysis of time-domain response indicates that methods to strengthen the crankcase box stiffness, such as embedding a main bearing steel sleeve, is favorable for improving the dynamic characteristics of an AZ91D crankcase box.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Advanced Welding Techniques Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (13)
Show source-provided references
1. O. A. Lambri, W. Riehemann, and Z. Trojanova, “Mechanical spectroscopy of commercial AZ91 magnesium alloy,” Scripta Mater., 45, 1365–1371 (2001).10.1016/S1359-6462(01)01171-X ↗
2. G. Song, “Recent progress in corrosion and protection of magnesium alloys,” Adv. Eng. Mater., 7, 563–586 (2005).10.1002/adem.200500013 ↗
3. J. C. Benedyk, “Magnesium advances in automotive applications,” Light Metal Age, 63, 36–38 (2005).
4. B. P. Powell, “Magnesium alloys cast into auto powertrain components,” Adv. Mater. Process., 162, 60–61 (2004).
5. N. Jeal, “High-performance magnesium,” Adv. Mater. Process., 163, 163–167 (2005).
6. J. Zhang, Y. L. Tao, Z. F. Sun, et al., “Vibration damping capacity of AZ91D magnesium alloys,” Chinese J. Mech. Eng., 42, 186–189 (2006).10.3901/JME.2006.10.186 ↗
7. X. N. Zhang, “Effect of reinforcements on damping capacity of pure magnesium,” J. Mater. Sci. Lett., 22, 503–505 (2003).10.1023/A:1022978117819 ↗
8. D. Wan, J. Wang, L. Lin, Z. Feng, and G. Yan, “Damping properties of Mg–Ca binary alloys,” Physica B: Condensed Matter, 403, 2438–2442 (2008).10.1016/j.physb.2008.01.008 ↗
9. N. Nishiyama and S. Asano, “Evaluation of amplitude dependence of internal friction in high-damping metals,” J. Japan Inst. Metals, 65, 109–114 (2001).10.2320/jinstmet1952.65.2_109 ↗
10. J. Goken and W. Riehemann, “Damping behavior of AZ91 magnesium alloy with cracks,” Mater. Sci. Eng. A, 370, 417–421 (2004).10.1016/j.msea.2003.08.110 ↗
11. S. G. Pantelakis, N. D. Alexopoulos, and A. N. Chamos, “Mechanical performance evaluation of cast magnesium alloys for automotive and aeronautical applications,” J. Eng. Mater. Technol., 129, 422–430 (2007).10.1115/1.2744407 ↗
12. J. Y. Yang, Test Modal Analysis, Beijing Institute of Technology Press, Beijing (1990).
13. H. M. Shi, G. Chen, and Y. Wu, Mechanical Vibration System – Analysis, Measurement, Modeling, Control, Huazhong University of Science and Technology Publishing House, Wuhan (1992).