Dhairya R Vyas
In industries, collisions between granular bodies are encountered in applications like shot peening, milling, crushing, and mixing. Since it is difficult and often expensive to use experimental techniques to analyse such applications, numerical methods like the Discrete Element Method (DEM) are used instead. However, while analysing the flow of granules, we also need to identify how the interacting bodies deform and break, and this is not easily possible using DEM, especially in more intricate applications involving complex geometries. So numerical methods which can accurately model both — frictional interactions, and deformation and breakage — need to be identified. One such method is Smooth Particle Hydrodynamics (SPH), which has been widely used to analyse high velocity collisions like ballistic impacts. However, it lacks accurate friction models and hasn’t been tested for analysing low velocity impacts. Dhairya’s project is focused on incorporating accurate friction models in SPH and testing its performance in modeling low velocity collisions. The aim is to provide a powerful predictive tool for engineers who design equipment that is used to handle granular material. Through the help of computer simulations, they will be able to compare the durability and performance of different designs and select the most suitable ones. This will not only minimise the cost of designing (by minimising experimental tests) but also will lead to the development of durable and efficient components. This will eventually reduce the price of the finished products.