摘要
Multiscale mechanics is about multi-scale correlation and strong coupling between scales,which widely exists in engineer-ing applications with a broad range of spatial and temporal scales.The averaging method and the perturbation method have been employed in the past to deal with weak coupling problems.For strong coupling problems,the methods based on small parameter expansion are no longer applicable.Fluid turbulence and solid fail-ure are two typical cases in nonlinear mechanics[1-3].The chal-lenge of turbulence arises from the cascade of momentum,energy,and other conserved quantities across a wide range of spatial and temporal scales.The solid failures in heterogeneous media,on the other,result from the trans-scale cascade of micro-damage evolu-tions.
