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We present information about construction tasks of tracked vehicle model in MSC.ADAMS computer program. Kinematic and dynamic relationships inside entire suspension system are described here. Elements of the vehicle are grouped in few subsystems, like suspension, wheels or tracks. The significant accent is put on the tracks with its force connections. Those connections are between all track links as also between wheels, links and ground surface. Also significant accent are put on damping value estimation. It is estimated based on tolerance area of characteristics of real damper element, which is applied in this type of vehicles. In next part of the article, process of appropriate damping characteristics selection is described. This process is applied for high fidelity model building.

The article contains results of a conceptual work and research which develops a semi-active suspension of the 2S1 caterpillar platform. The results are collected on designed and built test stands and used in three alternative models of the platform suspension system. The first one is based on the existing construction of the platform. The other two have been modernized by using new solutions in the tracked vehicles suspension technology associated with a torsional spring element. The authors assumed simulation conditions for straight line driving while the model overcomes an obstacle in one track. The results of simulations are compared and analyzed to improve parameters of the vehicle suspension.

In the article, three alternative models of 2S1 platform suspension system are presented. First model is based on existing construction of 2S1 platform suspension. Two next were modernized by usage of new solutions in tracked vehicles suspension technology. The solutions are especially associated with torsion spring element and idler mechanism. The authors have assumed simulation conditions for straight line driving of the vehicle models, while they overcome a single obstacle with one track. Results of all models simulations are compared and analyzed to improve stability of the vehicle while driving. There are also used a human response filter to determine less harmful driving conditions for vehicle crew.

The theme of this article is the design and strength analysis for two types of rotary seals which use shape memory materials to the radial terminal. In this paper, basic types of technical seals were brought up and shape memory materials were described. Based on these pieces of information and product catalogue of Trelleborg, there were designed two types of seals with coils of wire and shape memory. After the project of building the seals was prepared, strength tests were carried out in ANSYS Workbench program. In the case of the seal type TRG two types of analysis were carried out: the first simulating the assembly of the seal, and the second, which is the extension of the first, including additionally the coil terminal of wire. For the seal type TRA, two types of analysis were conducted as well: the first including assembly and coil terminal and the second comprising additionally loading the seal with working pressure. After selecting the materials, declaring the environment and the loads with accordance to the findings of the analyses and performing computations the results were provided. As the output there were chosen: the total reduced deformation, reduced stress and reduced load.