Tagged: Point Mass
-
-
June 6, 2022 at 9:58 am
FAQ
ParticipantMass moment of inertia is a scalar value which tells us how difficult it is to change the rotational velocity of the object around a given rotational axis. When a mass moves further from the axis of rotation it becomes increasingly more difficult to change the rotational velocity of the system. Intuitively, this is because the mass is now carrying more momentum with it around the circle (due to the higher speed) and because the momentum vector is changing more quickly. Both of these effects depend on the distance from the axis.
If the assembly represented by the point mass has a small volume or concentrated mass, you may not have to input mass moment of inertia for the point mass because Ixx,Iyy and Izz are small enough to be negligible. If the assembly represented by the point mass has a widely distributed mass, then moment of inertia should be included because it may significantly affect the results. Because mass moment of inertia is part of mass matrix, higher mass moment of inertia generally leads to lower natural frequency.
-

Introducing Ansys Electronics Desktop on Ansys Cloud
The Watch & Learn video article provides an overview of cloud computing from Electronics Desktop and details the product licenses and subscriptions to ANSYS Cloud Service that are...

How to Create a Reflector for a Center High-Mounted Stop Lamp (CHMSL)
This video article demonstrates how to create a reflector for a center high-mounted stop lamp. Optical Part design in Ansys SPEOS enables the design and validation of multiple...

Introducing the GEKO Turbulence Model in Ansys Fluent
The GEKO (GEneralized K-Omega) turbulence model offers a flexible, robust, general-purpose approach to RANS turbulence modeling. Introducing 2 videos: Part 1Â provides background information on the model and a...

Postprocessing on Ansys EnSight
This video demonstrates exporting data from Fluent in EnSight Case Gold format, and it reviews the basic postprocessing capabilities of EnSight.
- Why is damped frequency is lower than undamped frequency with viscous damping but larger with structural damping?
- How can I specify acceleration at a node? Could I use the ‘big mass method’?
- How can I change the normalization method of the vibration modes from modal analysis?
- Why does the prestress from Static analysis does not add up to the stress in Random Vibration analysis?
- ANSYS Mechanical: Vibration Housing Noise
- In a Modal Analysis of Mechanical, why aren’t the Participation Factors Summary under Solution Information displayed?
- A Shock absorber is represented as spring element with damping constant. Modal analysis is performed using Reduced Damped (QRDAMP) solver. How to perform a Modal super position harmonic or transient analysis further ?
- Can you output the frequency response for a total deformation?
- In the results of a modal analysis, how can I define that a frequency is an output parameter ?
- Is it possible to perform a sine-on-random vibration analysis in either Mechanical or Mechanical APDL?
© 2023 Copyright ANSYS, Inc. All rights reserved.