Anthropomorphic foot mock-up, to assess the trauma safety of the crew of auto armored vehicles with mine explosion

Abstract

The article presents the results of development and testing of an anthropomorphic foot mock-up, which allows to determine the leg safety in case of mine explosion. As the statistics show, the legs of the crew of auto armored vehicles, as well as the driver and passengers of special protected civilian vehicles, are subject to a strong dynamic impact with a mine explosion, resulting in an increased level of injuries to this part of the body. When developing a protected technique, special attention is paid to leg injuries. Since the anthropomorphic measuring dummies used in the tests for mine explosion are limited, and it is necessary to determine the trauma safety of a large number of people, it was decided to develop an anthropomorphic foot mock-up. The anthropomorphic mock-up of the leg consists of the M2A-02 carrier module with the M3A-01 bushing adapter, the 723/8 foot, the calf shank spring, and the weight cylinder that replaces the missing shank mass and half the hip mass. To determine the axial force in the shin, a special motion sensor is used. According to the measured compression and the existing spring stiffness, a peak axial force is calculated. The anthropomorphic mock-up of the leg was calibrated on a special coprode stand for discharge. The discharge from various heights from 0.46 m to 2.5 m was made on different surfaces - sand and steel with a thickness of 8 mm. Also, a leg was dropped, shod in a statutory boot. After the calibration, the device was used in full-scale tests by undermining a special civil protected vehicle to determine the trauma safety of the driver's and passengers' legs. According to the results of the work, it was concluded that the foot mock-up can be used for testing special civil protected vehicles, as well as for armored vehicles with mine explosion.