Scientific interests are within the field of mechanic engineering and concern the development of the theory of the cutting and shredding assemblies of working machines, and in particular: - application of the computer techniques in designing of the machines’ design and optimization; - mathematical modeling of the kinematics and dynamics of the machines’ working assemblies movement; - experimental studies on the new designs of working assemblies. The below may be considered to be the most important achievements in the scientific activity: - development and drawing up of the theory and design of the drum cutting assemblies used in chaff cutters; - development and drawing up of the theory and design of the shear-finger cutting assemblies used in chaff cutters, mowing machines and combine harvesters; - drawing up of the grounds of the theory and design of the beater shredders for grain materials;