Selection of the calculated equivalent of the supporting devices of U-shaped frames of earthmoving vehicles

Abstract

The article describes the choice of the design equivalent of the supporting devices of U-shaped frames of earthmoving vehicles. When calculating the U-shaped frames of earth-transport machines for the action of forces located in the plane of the frame, the supporting devices must be represented and calculated either as hinged-fixed supports or as a statically defined system.
 The difference in the choice of the calculated equivalent of the supporting devices leads to an is-total difference in the estimated load of the entire frame. Considering the same frame with the same load, but with different resistance devices, it is easy to reconcile that the value of the largest bending moment in the transverse part of the raw can vary by 30-35%. A significant difference in load exists in the longitudinal parts of the frame. In this regard, there is a need to formulate the criteria by which it can be concluded that the supporting frame device that is designed corresponds to the calculated equivalent.
 The correct choice of the calculated equivalent of the supporting devices of the ground-transport machine frame significantly affects the results obtained during calculations and helps to greatly simplify them.