A numerical study on the damping capacity of metal matrix nanocomposites

作者：Yadollahpour M^*; Ziaei Rad S; Karimzadeh F; Eskandari Jam J

来源：Simulation Modelling Practice and Theory, 2011, 19(1): 337-349.

DOI：10.1016/j.simpat.2010.07.005

• Nanocomposite
• Damping capacity
• Finite element
• Dislocation

In the present study the damping capacity of metal matrix nanocomposites (MMNCs) IS predicted using a micro-mechanical modeling approach The model is based on finite element analysis of a unit cell which mimics a pure metallic lattice with stiff reinforcing nanoparticles The dissipated energy of nanocomposite is predicted numerically by applying a harmonic load on the unit cell model The influences of the grain size boundary phase thickness and reinforcement size on the energy dissipation were calculated by the developed finite element model Also the damping capacities of three typical particulate reinforced nanocomposites have been simulated by the proposed model The relationship between damping capacity and dislocations were also discussed with respect to the Granato-Lucke (G-L) theory The results

• 出版日期2011-1