Gear Shift Investigation Using Virtual
Prototype
Aleš Prokop , Kamil Rehak , Roman Zajac , and Václav Otipka
Abstract The presented paper deals with the prediction of vibroacoustic behaviour
of heavy-duty transmission concept by application of virtual prototype. The
methodology was developed by a combination of both, numerical and experimental approaches on single-stage gearbox. The results from both approaches were
compared to validate computational simulation for the purpose to use numerical
model for assembly with a higher level of complexity. The whole methodology is
applied to heavy-duty transmission concept. For the purpose of easy application to
different gearbox concept, the more complex model is written as open code. This
enables to include gear shift option tuning, which can significantly affect vehicle
comfort. This paper is mainly focused on the investigation of different gear shift
process influence the surface normal velocity which is evaluated on the gearbox
housing and is related to acoustic behaviour. The different combination of clutch
activation and deactivation profile at different torque is investigated and evaluated
by the surface normal velocity at most sensitive locations. Based on the results,
the multibody model can be used at designing and optimization phase from the
vibroacoustic point of view.
1 Introduction
The developing phase of gearbox consists of designing, manufacturing and verification of technical parameters. The presented trend of transmission development
requires optimization in terms of increasing efficiency and passengers’ comfort.
For that reason, the numerical simulations take a place in the development phase.
The design can be modified to decrease weight or optimize stiffness at the same or
even higher technical parameters of the final product. The important factors of the
key components are strength, vibration and emitted noise during whole operation
A. Prokop (B) · K. Rehak · R. Zajac · V. Otipka
Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2896/2, Brno
61669, Czech Republic
e-mail: prokop.a@fme.vutbr.cz
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_43
425
Prototype
Aleš Prokop , Kamil Rehak , Roman Zajac , and Václav Otipka
Abstract The presented paper deals with the prediction of vibroacoustic behaviour
of heavy-duty transmission concept by application of virtual prototype. The
methodology was developed by a combination of both, numerical and experimental approaches on single-stage gearbox. The results from both approaches were
compared to validate computational simulation for the purpose to use numerical
model for assembly with a higher level of complexity. The whole methodology is
applied to heavy-duty transmission concept. For the purpose of easy application to
different gearbox concept, the more complex model is written as open code. This
enables to include gear shift option tuning, which can significantly affect vehicle
comfort. This paper is mainly focused on the investigation of different gear shift
process influence the surface normal velocity which is evaluated on the gearbox
housing and is related to acoustic behaviour. The different combination of clutch
activation and deactivation profile at different torque is investigated and evaluated
by the surface normal velocity at most sensitive locations. Based on the results,
the multibody model can be used at designing and optimization phase from the
vibroacoustic point of view.
1 Introduction
The developing phase of gearbox consists of designing, manufacturing and verification of technical parameters. The presented trend of transmission development
requires optimization in terms of increasing efficiency and passengers’ comfort.
For that reason, the numerical simulations take a place in the development phase.
The design can be modified to decrease weight or optimize stiffness at the same or
even higher technical parameters of the final product. The important factors of the
key components are strength, vibration and emitted noise during whole operation
A. Prokop (B) · K. Rehak · R. Zajac · V. Otipka
Faculty of Mechanical Engineering, Brno University of Technology, Technicka 2896/2, Brno
61669, Czech Republic
e-mail: prokop.a@fme.vutbr.cz
© Springer Nature Switzerland AG 2021
N. Herisanu and V. Marinca (eds.), Acoustics and Vibration of Mechanical
Structures—AVMS 2019, Springer Proceedings in Physics 251,
https://doi.org/10.1007/978-3-030-54136-1_43
425