Complex Design, Modeling & Simulation Techniques Flashcards
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In Autodesk Inventor, which analysis type determines the natural frequencies at which a structure tends to vibrate?
Answer: Modal analysis
Modal analysis computes the natural frequencies (modes) of a structure, which is critical for avoiding resonance in dynamic applications.
When using 'Generative Design' in Autodesk Fusion 360, what inputs are required to define the problem?
Answer: Preserve geometry, obstacle geometry, loads, constraints, and manufacturing method
Generative Design requires defining preserved geometry (keep regions), obstacle geometry (avoid regions), structural loads, supports, and manufacturing method as inputs.
In Autodesk CFD, what is the purpose of enabling 'turbulence' models such as k-epsilon?
Answer: To approximate the effects of turbulent flow without resolving every eddy
Turbulence models like k-epsilon use statistical approximations to simulate the effects of turbulence without directly resolving all eddies, saving computational cost.
Which Inventor feature creates a series of identical features arranged in a circular pattern around an axis?
Answer: Circular pattern
The Circular Pattern feature replicates a selected feature or body at equally spaced (or custom-spaced) angular positions around a specified axis.
In a Nastran buckling analysis, what does the 'buckling load multiplier' (eigenvalue) indicate?
Answer: The factor by which the applied load must be scaled to cause buckling
The buckling load multiplier is the eigenvalue that, when multiplied by the applied load, gives the critical load at which the structure becomes unstable.
What is a 'T-Spline' body in Autodesk Fusion 360, and why is it useful?
Answer: A subdivision surface that allows smooth organic shapes with localized detail control
T-Spline bodies use subdivision surface technology to create smooth, organic forms that can be locally refined without affecting the entire surface.
In Autodesk Inventor's stress analysis, what is the effect of applying a 'frictionless constraint' to a surface?
Answer: The surface is free to move parallel to itself but prevented from moving normal to its plane
A frictionless constraint prevents displacement normal to the constrained surface while allowing free movement in the tangential directions, simulating a smooth sliding contact.