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The process of interaction between elastically fastened tillage tools and obstacles is investigated by means of computer applications that simulate the dynamics of the movement of 3d-models (MDB) created in the CAD. Design of the virtual stand and dynamometer block, implemented in the SolidWorks CAD system and the application for modeling the movement dynamics of SolidWorks Motion are described. The virtual stand enables to simultaneously capture all the components of traction resistance vector (R X , R Y , R Z ). Measured volumetric power characteristics of the process of stump overcoming by a section of a modular disk cultivator and the forces arising on the spring of a safety mechanism are given as an example of the virtual stand use. The discrepancy between experimental data and modeling data at the entrance to the stump is 8 … 10%. In the future, virtual test data can be used to optimize the structures of tillage tools and safety mechanisms, as well as to reliably simulate disturbances in modeling the working process of the machine-tractor unit as a whole.

Three-dimensional virtual dynamometer to measure the process of overcoming obstacles by disc cultivator