Concentrated suspensions of inclusions occur in asphalt and dental composite resins. Concentrated suspensions are also of use in achieving a combination of high stiffness and loss (the product E tan δ ), desirable in damping layer and structural damping applications. For realizable particulate microstructures, analytical solutions for monodisperse inclusion morphologies such as spherical, random fibrous and platelet, are valid only in the case of a dilute concentration of inclusions. Finite element analyses were conducted of hierarchical particulate composites with high volume fractions of particles of irregular shape. For particle volume concentration 40 percent or less, the results are close to the Hashin-Shtrikman lower formula in a stiffness versus concentration plot and in a stiffness loss map. For larger concentration, stiffness is higher and E tan δ is lower. The irregular particle shape therefore enhances stiffness at a given concentration, and reduces damping layer performance.
Analysis of High Volume Fraction Irregular Particulate Damping Composites
Contributed by the Materials Division for publication in the JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY. Manuscript received by the Materials Division July 2, 2001; revised manuscript received September 26, 2001. Associate Editor: S. Mall.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Lakes, R. S., Kose , S., and Bahia , H. (March 26, 2002). "Analysis of High Volume Fraction Irregular Particulate Damping Composites ." ASME. J. Eng. Mater. Technol. April 2002; 124(2): 174–178. https://doi.org/10.1115/1.1448923
Download citation file:
- Ris (Zotero)
- Reference Manager