This paper, first of all, demonstrates the comparison between simulated results and direct measurements of the absorbing performance of polymer wool. It is found that simulated results are statistically coincided well with experiment results. Secondly, this paper discusses the influence of Biot parameters on the absorbing performance of the polymer wool. Besides, the influencing rules of these factors on the absorbing performance of the polymer wool are analyzed as well. This has great significances to the application of the polymer wool on noise reduction in automobile.

Al-W alloy billets were produced by powder pressing at room temperature and subsequent hot pressing. Quantities of billets were compressed at constant strain rate and temperature with 60% height reduction on Gleeble-3800 thermal simulation testing machine to study the plastic flow behaviors of the test alloy. The temperature of the compression processes ranged from 450 to 570oC. The strain rate was varied between 0.001 and 1s−1. The regularity of flow stress for the test alloy varied at elevated temperatures was studied. The activation energy during hot deformation is 757.943 kJ/mol by calculated, and the Arrhenius constitutive relation model was established. Keywords: Al-W alloy, powder metallurgy, thermal simulation, constitutive model