ABSTRACT
Any form of vibration that a human body is exposed to is called human vibration. There are two types of vibrations that affect the human body—whole-body vibration and hand-arm vibration (HAV). The need to study these vibrations is to reduce chances of bone fracture and healing of bone for an individual. Workers subjected to continuous vibrations can develop disorders such as nerve disorder, clotting in the blood circulatory system, numbness in fingers and thumbs, disordered shape of bones in hands and wrists, etc. Whole-body vibrations may cause stomach troubles or affect the spine. Shoulder is a point of joint where the humerus bone joins to the elbow. The shoulder and elbow of the hand act as cups connected by a cylindrical shaft. The main aim of this chapter is to analyze HAV in detail. The primary objective is to identify the natural frequencies and structural strength of the humerus bone. After determination of frequency, the secondary part of the analysis is to analyze broken humerus bone and its healing methodology. In human anatomy, the humerus bone connects the forelimb to the elbow. To identify natural frequencies, modal analysis having free-free boundary conditions was performed. Structural analysis was performed to determine the fracture bone area. ANSYS-based modal analysis was performed and the natural frequency varied from 0 to 805.9 Hz. For the other two boundary conditions, the natural frequency varied from 565.47 to 2229.5 Hz. For fracture analysis, 2500–4000 N force was applied. Fracture in the humerus bone can occur under two conditions: first, across the shaft and second, across the elbow and shoulder joints. The bone supporting plate and screw was applied for fracture healing in serious bone fracture conditions.
