Understanding the Inertial Loads Using Ansys Mechanical — Lesson 5

Gravitational acceleration can be included in a static analysis, but it may be a bit confusing for new users since parts should not move or accelerate in a static analysis. In this video, we will discuss different types of inertial loads like acceleration, rotational velocity, rotational acceleration, and gravity, as well as what inputs are needed for their definition in a static analysis. We will focus on defining proper material properties, as this is essential for carrying out a finite element analysis, keeping in mind inertial loads. We will discuss some inertial loads that may need to be interpreted in the context of a moving reference frame and see how the equation of motion varies for static and dynamic analysis. We will do this via a short lecture and a walkthrough example using Ansys Mechanical.

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0:00 - Intro
1:35 - Selection of Material Property
3:52 - Standard Earth Gravity
4:17 - Acceleration
5:10 - Rotational Velocity
5:41 - Rotational Acceleration
6:02 - Rotating Frame of Reference
6:32 - Static Vs Dynamic Analysis

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[emredemir]

Talked a lot, but did not tell anything.

[riykiapriandi]

Why using fix support? Not clydrical support

[aero_cats]

Any information on why does the gravitational forces was not being modelled in this case?

[pawelo]

Too trivial - what if we had inertial loads with "normal forces" in one analysis- can static structural handle it?

[abhipatil]

Can we use point mass in modal analysis with MOI in assembly to replace large part with point mass? and can we connect these point masses by rigid link to the subject part and with each other?

[nagarajae]

Still I don't understand if 1.5rad/sec acting on body, does it fan rotates, if rotates how long please?