Computing experiment for unloading dumper truck at a sloping pad

摘要

The results of a computational experiment on unloading a dump truck are described.The experiment was carried out on the mathematical model of a car built on the basis of Lagrange's equations.Before the movement(unloading)of cargo,the lifting of the platform is considered as a quasi-static process.From the equations of the equilibrium of the car and geometric relationships,analytical expressions are derived for calculating the force interaction between the platform and the frame.When the cargo moves as a monolithic block,the mathematical model is represented in the form of a system of differential equations.After the adoption of a number of assumptions,its solution was substantially simplified.An algorithm for solving the problem is proposed that implements the method of incremental change of parameters.The results of calculation of forces in hydraulic cylinders during unloading of BelAZ mining dump truck are given.