Hello All I am trying to model a damper in MSC Nastran. I do have damper curve (force versus velocity) for compression and expansion. Please tell me how to proceed with the modelling of damper for given property curve. Thanks Sumit Sheoran

Hello All
I am trying to model a damper in MSC Nastran. I do have damper curve (force versus velocity) for compression and expansion.
Please tell me how to proceed with the modelling of damper for given property curve.

Thanks
Sumit Sheoran

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0 Vivek Bhardwaj over 6 years ago

Hi Sumit,

You need to use CBUSH with PBUSHT, here the third field is B which can be used for force vs velocity.

In below example you can see how it is used:

PBUSHT  1      B     2

PBUSH   1      B     1.     1.     1.     1.     1.     1.

CBUSH   1      1      1      2      0.    1.      0.

$ Dynamic Load Table : pbusht

TABLED1 2

       -1.     0.     0.     0.    1.     1.     2.     2.

       2.3    2.      ENDT

Regards,

Vivek
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0 Vivek Bhardwaj over 6 years ago

Hi Sumit,

You need to use CBUSH with PBUSHT, here the third field is B which can be used for force vs velocity.

In below example you can see how it is used:

PBUSHT  1      B     2

PBUSH   1      B     1.     1.     1.     1.     1.     1.

CBUSH   1      1      1      2      0.    1.      0.

$ Dynamic Load Table : pbusht

TABLED1 2

       -1.     0.     0.     0.    1.     1.     2.     2.

       2.3    2.      ENDT

Regards,

Vivek
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