Reznikov A. Development of the method of forecasting stress and strain state of the motor-grader main frame

The thesis deals with the development of the method of forecasting stress and strain state of the motor-grader main frame. In the work the analysis of motor-graders, manufactured by the leading companies of the world, has been made and the specific breakages of their main frames metal structures have been identified. The greatest dynamic loadings that act on the motor-grader main frame while in operation have been calculated and their dependence on parameters of the operation process such as operating speed, the blade offset and the angle of setting blade in the plan have been estimated. The engineering method of forecasting stress and strain state of a motor-grader main frame has been worked out. The experimental testing of theoretical principles including determination of stress and strain state of motor-grader ДЗк - 251 main frame has been made.