MY RESEARCH BLOG

A novel multiscale approach for analysis of reinforced concrete structural elements that overcomes two major hurdles in utilization of multiscale technologies in practice is developed. The two salient features are: (i) coupling between material and structural scales du...

August 16, 2017

A half a century old idea of decomposing the rate of deformation into elastic and plastic parts is critically examined. We show that even the most recent additive variant based on the logarithmic rate is inconsistent with the notion of elasticity in so-called unloading...

January 20, 2017

Computational continua is a higher order continuum formulation. From a theoretical point of view, the computational continua is endowed with fine-scale details; it introduces no scale separation; and makes no assumption about infinitesimality of the fine-scale structur...

January 19, 2017

An adaptive variant of the measure-theoretic approach (MTA) for stochastic characterization of micromechanical properties based on the observations of quantities of interest at the coarse (macro) scale  has been developed. The salient features of the nonintrusive stoch...

January 16, 2017

A computational certification framework under limited experimental data is developed. By this approach, a high fidelity model (HFM) is first calibrated to limited experimental data. Subsequently, the HFM is employed to train a low fidelity model (LFM). Finally, the cal...

January 4, 2017

An upscaling approach for multi-porosity media is developed and demonstrated on a three-scale porous medium. The three-scale porous medium problem is analyzed using the so-called MultiSPH approach, which is a sequential SPH solver at multiple scales. By this approach,...

January 2, 2017

A three-dimensional nonlocal multiscale discrete-continuum model has been developed for modeling mechanical behavior of granular materials. In the proposed multiscale scheme, we establish an information-passing coupling between the discrete element method (DEM), which...

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Multiscale Software