The hat shelf does not move until its rope becomes taut. The connection points of the gas spring have additional z-components, so that the spring can also be modeled with an angle in 3D. In addition, if the mounting situation is symmetrical like in this example, one gas spring element can also model both gas springs by setting the parameter “Quantity” to 2.
The gas spring is not only temperature dependent in its force action, but also (due to internal friction) dependent on the operating direction. Due to our diagram system (and the ability to calculate many force scenarios in parallel) all relevant curves, e.g. for the manual force, can be displayed together in one common window, even if e.g. only the opening movement was explicitly modeled kinematically.