The paper presents issues related to the evaluation methods of mobility engineering machinery. The issue of mobility is particularly important in terms of tasks and rescue evacuation during disasters and military applications. Currently used methods in evaluation of mobility are manual and they mainly serve to determine the accessibility of terrain for standard vehicles and the usefulness of those methods to access the mobility of special army vehicles is limited. Therefore there is a need to work out own methods to access the mobility of army vehicles in the inaccessible terrain.
The new research trends are moving away from research works that are not directly connected with industrial applications. The Integrated Computational Materials Engineering (ICME) is an excellent example of the relationship between scientific research and the industrial sector.As an example of the design development of construction of a suspension component, an overview of the changes of a welded part replaced with cast component is presented. The identification of boundary conditions and forces operating on the nodes of the suspension element allowed determining the critical areas in the existing welded construction. Then the new design of casting for high performance applications was developed. Analysis of the kinematics of the suspension components also revealed the need for changes in the design of the mounting points of the suspension components to reduce the maximum values of forces and enforced moments. As a result of successive stages of the topology optimization of analysed cast, control arms with significantly lower values of maximum stresses were obtained. The material conversion of welded part with high strength AlZnMgCu aluminium alloy allowed the reduction of the weight by 25% for the lower control arm and 30% for upper control arm.
Currently led military operations (Iraq and Afganistan) have shown that one of the biggest threats for vehicles moving in convoys are Improvised Explosive Devices. On the basis of experiments, it was found that there are not such structures which are completely resistant to explosion. The paper describes the concept for arms of suspension system with specially reduced construction node which undergo a controlled destruction at the time of detonation. Designing the target elements requires tests in order to determine the service load for suspension system..
Unmanned ground platforms are increasingly used to perform tasks under direct threat to the operators life and health. Separating an operator from a controlled machine places high demands to its steering system. The requirement of reliability put to such platforms in terms of potential threats makes their steering systems being very precise controlled and tested at the stage of construction. The key element in the steering process of unmanned ground platforms are surroundings display systems which determine the success of conducting rescue operations. This paper presents an unmanned ground platform controlled by remote operator and describes some of the functionality tests of the remote control system. Keywords: Robot, Remote Control, Vision System, Teleoperation
This paper presents the results of field test and theoretical analysis driving resistance articulated 4x4 tracked robot test-bed. Tests were made on four different grounds. Designated elastomeric tracks resistance coefficients are much higher than for steel tracks. This information was important for the proper estimation of energy consumption in the process of driving. On the basis of obtained results it is possible to determine the electrical driving systems of robots.
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