Study Regarding the Transmissibility Vibrations about Hand-Arm System, Using Vibration Attenuation

Abstract

Abstract. The aim of the paper is to present a way to reduce mechanical vibrations that are transmitted to the operator's arm at workplace. This can be done using an innovative device, a damper mounted parallel to the forearm, between the wrist and the elbow.The innovative idea of this paper is the creation (design and realization of the practice) of a vibration attenuator device, which will be mounted along of the forearm; this could minimize the transmitted vibration, by the hand up the arm.The simulation demonstrated that there is a way to reduce the mechanical vibrations for the hand-arm system model chosen. This could lead to the reduction of occupational illnesses that are frequently found in workplaces like this.The conclusions of the experiment performed validated the theoretical results generated by the simulation and have shown that, by using an attenuator device mounted parallel to the forearm (between the wrist and the elbow), we can reduce vibrations along the arm to the shoulder by 50%.