Method of Calculating the Stress-Strain State of Frame Structures of the Autotractor Trailers for Static Loading Conditions

In the article on an example of the autotractor trailer, load-carrying capacity of 4 tons considers the technique for calculating the stress-strain state of the trailer frame. The comparative analysis of results of theoretical and experimental researches is given. It is established, that the deviations of the maximum values of stress at driving on road with tar coating of satisfactory quality is in limits of 4 %, on gravel roads with worn areas - 10 %, on the rotary strip with ridges in height of 8-12 cm and step of 90 cm - 11 %, on a deep ditch depth of 40-45 cm and width 100-150 cm - 9 %.

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