New and Updated Models, Apps, and Add-ins in Version 6.4

Modeling Transmission Ratio Variations in a Planetary Gear Train

Planetary gears, also known as epicyclic gear systems, are a type of mechanism commonly used in applications that require compact design and high torque transmission. They are characterized by their ability to provide multiple gear ratios within a small space, making them ideal for use in automatic transmissions, electric drills, and aerospace applications.

This example illustrates the modeling of a helical planetary gear train consisting of a sun gear, a ring gear, a carrier and five planet gears. Three cases are analyzed by fixing different components.

Door Slam Analysis

This example illustrates the dynamics of a car door assembly during a slam event. The system consists of a car body, a door, and rubber seals. Contact pairs are defined between the car body, rubber seals, and the door. The rubber seal is modeled using a hyperelastic material model. A transient analysis is performed to compute accelerations and joint forces. The results are analyzed during the impact, the rebounding of the door as it locks, and the steady-state.