Papers by Keyword: Human-Rifle System

Abstract: The deep understanding of human-rifle interaction is not only crucial to improve the rifle firing accuracy, but also important for rifle design. In this paper, the construction of a biological coupling human-rifle model for standing posture was created using MSC.ADAMS and BRG.LifeMOD. Firstly, the rifle model was built by virtual prototyping technology based on the software of MSC.ADAMS. Secondly, the human model was generated in BRG.LifeMOD on the database of Human dimensions of Chinese adults. Finally, the simulation of human-rifle system was performed by the model, in which the interface between the human model and the rifle model was modeled using corresponding constraints. The feasibility of the application of biology mechanics model of three-dimensional digital human body to the researches of human-rifle system was explored, and it can provide the basis for the researches of human-rifle interaction and dynamic response of human-rifle system.

Abstract: On the human-rifle system, the human body is affected by the firing impact. The firing impact will reduce the firing accuracy and change the initial shooting posture. Therefore the study of biomechanical characteristics using human-rifle modeling and numerical investigation is needed. The muscle-skeleton model was developed by the finite element method using beam and spar elements. In this study, a structural analysis has been performed in order to investigate the human body impact by firing a 5.56mm small caliber machine gun. The firing experiments with a standing shooting posture were performed to verify analytical results. The result of this study shows analytical displacements of the human-rifle system and experimental displacements of real firing. In the results, the analytical displacement on the human body is presented.

Abstract: The hit rate is affected by the shooting impact of the human-rifle system. The impact response of the human-rifle system is determined mainly by the geometrical parameters and contact boundary conditions. In this study, the height and weight of the considered human model are 170 cm and 60 kg, as these parameters mirror 50 per cent of Korean males in their twenties. The rifle model is applied on the K-2. The impact path analysis of three typical shooting postures: the standing, kneeling and prone shooting postures is performed with experimental impulse-time history during a shooting test. The biomechanical response such as impact transfer path, force history and displacement history are investigated.