This research paper deals with the modelling process of nanocomposites using Digimat software. Digimat is a nonlinear multi-scale material and structural modelling platform. It is a resourceful and innovative software used by CAE engineers, materials scientists and specialists working in the manufacturing processes of various composite materials to accurately calculate and predict the micromechanical behaviour of multi-phase complex composite materials and structures such as PMC, RMC, MMC, nanocomposites etc. The main objective of the study is to formulate a digital model of the nanocomposites that will help in virtually determining the conditions at which specimen failure starts. The specimens subjected to experimentation consists of cement mortar in cement-sand ratio of 1:2 reinforced with MWCNT and HNC in 4, 6, 8, and 10% by weight of cement. The specimens are subjected to Compressive, Split tensile and Flexural Strength testing in non-sonicated and sonicated (10, 20 and 30 minutes) condition. The same is modelled in the software. In the experiment, the specimen is loaded only until 20% breakage and the load at which the specimen cracks are obtained. These values are used for analysis in the Digimat software. Microstructure analysis was done using ImageJ software to determine the post break length of the nanomaterials and the same was used as inclusion size in the Digimat software. Values of stress, and Youngs modulus are obtained from the software and corroborated with the experimental results. The average percentage of error obtained in case of compressive, flexural and split tensile strength is more for non-sonicated specimens as compared to the sonicated specimens.