Preliminary investigation of dynamic loads of the crew of the armoured personnel carrier during frontal crash

On the work one described chosen problems concerning of threats of the crew of the armoured personnel carrier with dynamic loads during crushing the obstacle. One paid attention on the lack of regulations regulative this problems. One described the general construction, and also worked out model of the armoured personnel carrier and crashed object. To the modelling one used the software LS-DYNA, using the method of finite elements. One gave also conditions for carrying out the numeric research. On the work one placed example results of numerical tests, deformations and stresses in the hull of the vehicle and in the crashed gate. One placed also example-courses of the speed and accelerations of chosen elements of the vehicle and people inside. On the basis on received results of simulation research one evidenced high level threats of the crews, liable to be effective with serious offences, particularly of the head and the spine. One qualified also directions and the range of further works targeting the improvement of the safety of the crew, in this taking into account the use of investigative dummy man. To further research one proposed models of dummy man Hybrid III, which for the necessity of taking in to consideration of additional elements of the equipment of soldiers (e.g. the helmet, the weapon, the bullet-proof vest) must be however properly modified. One pointed also on the necessity of working out the additional protective devices and also formulate the methodology of the experimental research.