Bulk Cargo Pressure Acting on Vehicle Body Walls

Abstract

Transportation of bulk cargo occupies one of the leading positions in the market of transport services. According to analysts’ forecasts, in the future, the volume of transportation of such bulk cargoes as grain, cement, mineral fertilizers, etc. will only increase. The creation of vehicles designed for the transportation of bulk cargo with improved technical and economic indicators is an important and urgent task that cannot be effectively solved without a study of the loading of the vehicle with bulk cargo. The analysis of the applied methods for calculating the active and passive pressure of bulk cargo, including taking into account the vertical and horizontal accelerations acting on the vehicle, is carried out. Nowadays, equations used to determine bulk cargo pressure acting on vehicle body walls are applicable only for nearly vertical walls. Their use in calculating pressure for sloping walls for which angle of inclination to horizon is less than 80º leads to incorrect results. Paper is devoted to determination of compact analytical equations that can be applied to calculate pressure of bulk cargo acting on vehicle body walls in range of wall inclination angle to horizon equal to from 0 to 90º.