Inhalt

[ 245MALEMDYU20 ] UE Machine Dynamics

Versionsauswahl
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Workload Education level Study areas Responsible person Hours per week Coordinating university
1,5 ECTS B2 - Bachelor's programme 2. year (*)Maschinenbau Thomas Pumhössel 1 hpw Johannes Kepler University Linz
Detailed information
Original study plan Bachelor's programme Mechanical Engineering 2025W
Learning Outcomes
Competences
Students are able to understand the equations of motion of typical rigid-body mechanisms, derive them for practical examples and analyze the resulting motions. They will be able to apply the methods for reducing the degree of non-uniformity of motions in an appropriate manner. They will also be able to derive, analyze and interpret mathematical models for mapping torsional vibrations of drivetrain systems. They can determine and assess the resulting loads on shafts subjected to time-varying drive torques.
Skills Knowledge
Specifically, they can

  • derive and interpret the equations of motion of rigid body mechanisms using Lagrange's equations, d'Alembert's principle and the gear-formalism (k3, k4)
  • understand the significance of the degree of non-uniformity of motion and apply suitable design measures for reduction (k2, k3)
  • analyze constraining forces and impressed forces in more complex rigid body mechanisms (k4)
  • understand the topologies of torsional vibration systems, derive the equations of motion and perform a reduction to a reference shaft. (k3)
  • understand the meaning of homogeneous and particulate solutions of the associated differential equation systems (k2)
  • calculate natural frequencies and eigenmodes of torsional vibration systems and understand their physical meaning (k2, k3)
  • understand and investigate the effects of different Ritz approaches (in terms of a finite element approach) on the system matrices of torsional vibration systems (k2, k3)
  • understand and calculate the motion behavior of drive systems and the resulting shaft stresses in the event of a torque ramp or a torque jump on the drive side (k3, k4)
  • Rigid-body machines (gearbox function, centric crank drive, tangential force diagram, periodic solutions, degree of non-uniformity, constraining forces, impressed forces, inertia forces)
  • Torsional vibrations of drivetrain systems (modeling, simulation)
  • Two-mass oscillators (dynamic effects induced by time-varying drive torques, shaft loading)
  • Multi-mass oscillators (shapes, treatment of gear stages, equations of motion)
Criteria for evaluation 2 examinations; a mid-term and a final at the end of the class.
Methods calculation of example exercises
Language German
Study material script provided
Changing subject? No
Further information none
Corresponding lecture (*)MEBWBUEMADY: UE Maschinendynamik (1,25 ECTS)
On-site course
Maximum number of participants 35
Assignment procedure Assignment according to priority