advanced loads wb caea

8/13/2019 Advanced Loads WB CAEA

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Advanced Loadse nar

Patrick Cunningham

anuary

CAE Associates Inc. and ANSYS Inc. Proprietary 2013 CAE Associates Inc. and ANSYS Inc. All rights reserved.


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E-Learning Webinar Series

-CAE Associates.

Other E-Learning webinar topics coming up are:

Solving Transient Dynamic Problems with ANSYS LS-Dyna

February 12th and 14th

Working with APDL Command Objects in Workbench

March 5th and 7th

Visit www.caeai.com for details.

If you are a New Jersey or New York resident you can earn continuing

education credit for attending the full webinar, participating in the polls and

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Topics

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2. Mapping imported data onto the ANSYS Mechanical model

using the External Data Utility.

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Tabular and

ANSYS/Mechanical



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Load Definition in ANSYS/Mechanical

of the following ways:

Constant: The magnitude of the load does not vary by position and can vary

onl linearl with time throu hout the duration of the load ste .

Tabular: Can be defined by a table of the load magnitude and one primaryvariable (x, y, z, time).

Functional: A math expression is used to define the load magnitude as a

function of one primary variable (x, y, z, time).

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Variable Loading in ANSYS/Mechanical

A pressure distribution in the top surface that varies along the length.

A periodic load at the free end.

time varying loads.

Constant pressure is distributedover the beam length.

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Sinusoidal force applied at the free end.


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Tabular Loading in ANSYS/Mechanical

variable only (x, y, z or time).

Tabular loads can be defined in local Cartesian and cylindrical coordinate

.

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Functional Loading in ANSYS/Mechanical

, ,time).

Specify the Number of Segments to control the resolution of functional

.

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deactivated on a per load step basis.

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accordingly.

Example: Define a force load with the magnitude F = Fmax*sin(t).

. .

2. Add a force load with a magnitude defined as a function.3. Define in radians/s in the function.

.

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Tabular and Functional Loading Types

the table below:

Tabular Functional

Load (time) (xoryorz) (time) (xoryorz)Force + X + X

RemoteForce + X + XNodalForce + + + +

Moment + X + X

Pressure + + + +

NodalPressure + + + +Displacement + + + +

RemoteDisplacement + + + +NodalDisplacement + + + +

BearingLoad X X X XThermalLoad + + + +

JointLoad + X + XAcceleration + X + X

AngularVelocity + X + XNote: Only Pressure and Nodal Pressure tabular and functional loads are available in a Harmonic Response Analysis

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.length.

A pressure load varying along the length of the beam is applied to the top

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-.global Y direction.

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25.685 Hz.

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. A beta damping coefficient is input as follows:

= 2cr/ 2f

where cr= 1 and f=25.685 Hz

The resulting displacement is consistent with the static analysis result.

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3rd bending mode:

function segmentsto describe the

periodic load in the

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.

Static pressure

+

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Using the External

ANSYS/Mechanical



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The External Data Utility

1. When I have CFD results that I need to distribute on my Mechanical model.

2. When I have temperature results from a different finite element mesh.

. .

4. When I have a non uniform thickness shell and I have a table of coordinatesversus thickness that I want to assign to my elements.

, ,

map it onto your model for the following quantities:

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e x erna a a y s oun n e omponen ys ems sec on o eProject Page.

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. Setting it up requires the four basic steps shown here.

.

accordingly.

1. Identify the source data file.

2. Set the format type.

4. Check the data preview.

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is required.

RMB - Refresh

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Mechanical environment.

RMB click on the folder to insert the desired load.

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.

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display.

RMB click on the imported load and insert a Validation to check the quality of

the data mapping.

As an example, set the type to Source Value and Display on Parent to On.

RMB click on the validation and choose Analyze.

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advanced loads wb caea

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