Methodological aspects of the numerical strength analysis of the power frame of an ATV

The design of an ATV structure is a complex engineering task, where the development of a load-bearing frame is one of the priorities, which requires a systematic methodology. Purely analytical approaches to calculations, the results of which can be used in the development of a three-dimensional tubular frame structure, are now becoming a thing of the past, since the assumptions used in analytical methods give a significant calculation error, which makes it possible to obtain only a very approximate picture of the distribution of stresses and resulting deformations of the structure. It is also necessary to take into account that modern design technologies provide for the simultaneous use of various profiles of not only round, but also more complex sections, which should provide the necessary functionality of different sections of the frame (while providing a sufficiently large number of structural requirements for it), but significantly complicates the calculation procedures. With such input data, preliminary virtual electronic simulation of real products in combination with subsequent numerical engineering analysis is optimal and allows taking into account various design and technological nuances. Such software systems as CATIA related to PLM-systems (PLM - English product lifecycle management system) make it possible to perform both product modeling and, in fact, a series of numerical experiments within a single interactive environment. In the conditions of real design at the production facilities, such works are methodologically undeveloped and innovative. The purpose of the article is to consider approaches to optimizing the design of the power frame of an ATV using software computer engineering analysis tools and a previously created electronic geometric model of an ATV. In particular, the issues of preparing a model for subsequent finite element partitioning, evaluating the results of a numerical study in relation to evaluating the performance of the designed power frame of an ATV under the conditions of using the component base of previously developed power frames of motorcycles and buggies are touched upon.