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Introduction of loadcase „Creeping“ to a multi-body simulation
Volek, Matěj ; Lošák, Petr (oponent) ; Březina, Lukáš (vedoucí práce)
This master thesis is focused on implementation of the process simulating the “Creeping” loadcase into the existing interface used for multi-body simulation of vehicle drivetrain. The “Creeping” was defined as driving a vehicle without hitting a gas pedal in low gears. It was decided to simulate this state by introducing forces of the Driving resistance – Air Drag force Fa, Rolling Resistance force Fr and horizontal part of the Gravity force Fgx. These forces were modelled in SimulationX software and model for “Creeping” loadcase in SimulationX was defined – it was based on change of the angle of the hill grade, which gives the results needed for the Creeping behavior. Then Matlab files needed for the run and post processing of the simulation were created, which analyze the results in dependency on time or mean engine torque. Then the correctness of the process was controlled in comparison with experimental data. This comparison showed that the process is working without major problems; the results showed similar trend, but they were influenced by the lack of the input data from the experiment.
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Introduction of loadcase „Creeping“ to a multi-body simulation
Volek, Matěj ; Lošák, Petr (oponent) ; Březina, Lukáš (vedoucí práce)
This master thesis is focused on implementation of the process simulating the “Creeping” loadcase into the existing interface used for multi-body simulation of vehicle drivetrain. The “Creeping” was defined as driving a vehicle without hitting a gas pedal in low gears. It was decided to simulate this state by introducing forces of the Driving resistance – Air Drag force Fa, Rolling Resistance force Fr and horizontal part of the Gravity force Fgx. These forces were modelled in SimulationX software and model for “Creeping” loadcase in SimulationX was defined – it was based on change of the angle of the hill grade, which gives the results needed for the Creeping behavior. Then Matlab files needed for the run and post processing of the simulation were created, which analyze the results in dependency on time or mean engine torque. Then the correctness of the process was controlled in comparison with experimental data. This comparison showed that the process is working without major problems; the results showed similar trend, but they were influenced by the lack of the input data from the experiment.
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