Ground vibrations produced by a variety of man-made and natural causes frequently have an undesirable impact on the local population and environment. To generate healthy living circumstances, it is necessary to isolate these ground vibrations using the right methods. A numerical method to assess the efficacy of open (OT) and infilled (IFT) trench systems for vibration isolation has been included in the current study. The oscillating rectangular foundation, which serves as a dynamic source, is surrounded by a semi-circular trench barrier as part of the numerical analysis of an active screening process. The sand-crumb rubber combination (SCR) is used as an infill material in the trench. To calculate the amplitude reduction factor (ARF), dynamic displacements in the vertical direction are calculated at various points along the ground surface. In the present investigation, a three-dimensional (3D) finite element analysis (FEA) is used for numerical analysis. The objective of the present study is to evaluate the influence of numerous influencing factors on ARF. These characteristics include factors like the trench width, depth and distance from the pick-up locations as well as its excitation frequency. Estimates of the efficacy of both the OT and IFT are based on the ARF values. The study concludes that an IFT with a depth beyond 1.0 times Rayleigh wavelength provides comparable isolation to an OT.