2014, Volume 16, Issue 8
Strategic Study of CAE >> 2014, Volume 16, Issue 8
Research on sound insulation characteristics of the friction stir welding magnesium alloy
1. School of Mechanical & Automotive Engineering，Fujian University of Technology，Fuzhou 350118，China；
2. School of Mechanical Engineering，Nanjing University of Science and Technology，Nanjing 210094， China
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Abstract
The FSW (Friction Stir Welding) on magnesium alloy has already been widely used. Therefore, the research on its sound insulation characteristics appears particularly significant, based on the adaptive meshing technique, the FSW procedure was numerically simulated to provide constraint mode for the next acoustic calculation, which solved the problem of the material properties and achieved a combination of welding and acoustic to some extent. Subsequently, Designing and manufacturing a reverberation box measured TL (Transmission Loss) of the welded magnesium alloy plate, which could make up the shortage of a reverberation chamber in measuring the little specimen. Based on FE-SEA hybrid method, the method was employed to calculate the transmission loss which was then compared with the experimental one showed better consistency, prove feasible to predict the transmission loss in FSW on magnesium alloy. Comparisons between the welded magnesium alloy plate TL and the un-welded one could find that TL is reduced after welding. Changing the welding speed and the stir rotation speed respectively was used to observing TL in order to studying the influence of the welding parameters, which prove that the parameters should be required to set reasonable and not the bigger or smaller parameters is better.
Keywords
Friction stir welding ; Adaptive meshing ; Reverberation box ; Transmission loss ; FE-SEA hybrid method ; Welding speed ; Stir head rotation speed
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References
[ 1 ] Thomas W M，Nicholas E D. Friction stir welding forthe transportation industries [J]. Materials & Design，1997，18(4/6)：269- 273. link1
[ 2 ] Zhang H W，Zhang Z，Chen J T. The finite element simulation of the friction stir welding process [J]. Materials Science and Engineering A，2005，403(1-2)：340-348. link1
[ 3 ] 张洪武，张 昭，陈金涛. 搅拌摩擦焊接过程中搅拌头转速对材 料流动的影响[J]. 金属学报，2005，41（8）：853-859. link1
[ 4 ] Shorter P J，Langley R S. Vibro-acoustic analysis of complex systems [J]. Journal of Sound and Vibration，2005，288：669-699． link1
[ 5 ] Cotoni V，Shorter P J. Numerical and experimental validation of a hybrid finite element- statistical energy analysis method [J]. Journal of Acoustic Society of America，2007，122 (1)：259- 270． link1
[ 6 ] Shorter P J，Langley R S. On the reciprocity relationship between direct field radiation and diffuse reverberant loading [J]. Journal of Acoustic Society of America，2005，117 (1)：85-95． link1
[ 7 ] Mu R L，Masahiro T，Daiji T. Sound insulation characteristics of multi-layer structures with a microper- forated panel [J]. Applied Acoustics，2011(72)：849-855. link1
[ 8 ] Mao Q B，Stanislaw P. Experimental study for control of sound transmission through double glazed window using optimally tuned Helmholtz resonators [J]. Applied Acoustics，2010(71)： 32-38. link1
[ 9 ] ISO 354：Acoustics-Measurement of sound absorption in a reverberation room [S]. Geneva，2003. link1
[10] Xiang Duanqi，Wang Zheng，Chen Jinjing，Acoustic design of a reverberationchamber [J]. Applied Acoustics 1991，32（2）：83- 91. link1
[11] Watanabe H，Mukai T，Sugioka M，et al. Elastic and damping properties from room temperature to 673K in an AZ31 magnesium alloy [J]. Scripta Materialia，2004，51(4)：291-295. link1
[12] Chuvil’deev V N，Nieh T G，Gryaznov M Y，et al. Low-temperature super- plasticity and internal friction in microcrystalline Mg alloys processed by ECAP [J]. Scripta Materialia， 2004，50(6)：861-865. link1
[13] Hu X S，Wu K，Zheng M Y，et al. Effect of deformation on the damping capacity of magnesium alloys[J]. Materials Science Forum，2005，488-489：737-740. link1
[14] Wu K，Hu X S，Zheng M Y. Mechanical properties and damping capacities of magnesium alloys processed by equal channel angular extrusion (ECAE) [J]. Transactions of Nonferrous Metals Society of China，2005，15(S2) ：276-279. link1
[15] Zheng M Y，Hu X S，Xu W S，et al. Mechanical properties and damping behavior of magnesium alloysprocessed by equal channel angular pressing [J]. Materials Science Forum，2007， 539-543：1685-1690. link1
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