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Dynamic analysis of a Component

Altair Forum User

Hello,

I want to know the procedure for performing the dynamic analysis of a component using the optistruct.

The following are the conditions.

1. 50-500 hz frequency

2. 15g acceleration.

Can you please let me know know how to perform the analysis.

Regards,

Rajesh.

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Altair Forum User

Hi Rajesh,

Please refer to the below tutorials:

OS-1300: Direct Frequency Response Analysis of a Flat Plate

OS-1305: Modal Frequency Response Analysis of a Flat Plate

Please note: If you are a commercial customer, you can contact your local support @ http://www.altairhyp...ortProduct.aspx

Rahul Rajan_21763

Hi,

Please find attached Direct Frf tutorial using Optistrcut solver.

Instead of DAREA create a unit load in a particular direction of type SPCD.

Under RLOAD refer the Spcd load collector for exciteid and the last field on RLOAD can be changed to ACCE.

Regards

Rahul R

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Altair Forum User

Hi Rahul,

Can you please let me know, why we have to use SPCD instead of DAREA ?

The example shows we have to use DAREA.

Regards,

Shree

Altair Forum User

Hi Shreerang,

Both SPCD and DAREA are the load type cards used to represent a dynamic excitation.

DAREA is used to represent simple point forces / loads, which is then flagged with a table to represent time / frequency history.

SPCD is used to represent enforced / base excitations (enforcing a node/s) with Displacement, Velocity or Accelerations which are then acted upon by a table to represent time/ frequency history.