ACP Inventor Nastran and Dynamic Simulation Flashcards

In Inventor Nastran, what is the primary purpose of applying boundary conditions before running a simulation?

Answer: To define how the model is constrained and loaded in the real-world scenario

Boundary conditions define the physical constraints (fixed supports, applied loads) that represent the real-world environment of the analysis.

In Inventor's Dynamic Simulation environment, which joint type allows rotation about one axis and translation along the same axis?

Answer: Cylindrical

A Cylindrical joint allows both rotation about and translation along a single shared axis, combining two degrees of freedom.

What does a 'convergence study' in Inventor Nastran verify?

Answer: That refining the mesh no longer significantly changes the simulation results

A convergence study refines the mesh progressively to confirm that the solution (stress, displacement) stabilizes and is not mesh-dependent.

In Inventor Nastran, which element type is most appropriate for simulating a thin-walled sheet metal bracket?

Answer: Shell elements

Shell elements are used for thin-walled structures where the thickness is much smaller than the other dimensions, making them computationally efficient and accurate.

In Inventor's Dynamic Simulation, what is the function of an 'imposed motion' constraint?

Answer: It drives a joint at a prescribed velocity, acceleration, or position over time

Imposed motion drives a joint with a defined kinematic function (position, velocity, or acceleration) so the simulator follows a prescribed motion profile.

Which Inventor Nastran analysis type calculates the natural vibration frequencies of a structure without external loads?

Answer: Normal Modes (Modal)

A Normal Modes (Modal) analysis calculates the undamped natural frequencies and mode shapes of a structure.