Numerical Analysis Of Machine Foundations on Infilled Geosynthetic Reinforced Soil Bed

Abstract

Machine foundations require careful analysis and design as it involves severe dynamic loads in addition to the standard design loads of gravity. Furthermore, the magnitude and nature of the operating loads are mainly dependent on the type of machine. The foundation must aid the smooth functioning of machines during usual operation and also ensure structural integrity under unusual loading circumstances, especially during resonance. Such severe conditions may be avoided by varying the stiffness and the mass of the structure which alters the natural frequency of the system and demands revisit to the design of foundations. To expedite the process, a detailed 3D finite element analysis is carried out in the present study using a finite element software (ANSYS v 2021). Higher-rated machines now have greater tolerances and regulated behaviour thanks to advancements in manufacturing technology. To achieve greater efficiency in the machine performance, this study emphasizes the necessity of more vital collaboration between foundation designers and machine manufacturers. The paper presents the modal analysis of machine foundations resting on different ground conditions namely, Unreinforced and Reinforced with geocells . The findings are expressed in the form of vibration characteristics (i.e. natural frequency and mode shapes), which demonstrate how different elements of the structure respond under different dynamic loading situations. Furthermore, the influence of sloping ground near the machine foundations is highlighted in the study.