change elastic support through CSTIffness?

[sicheng6699]

Dear Prof. Taylor,

for the current investigation I have to run some examples, so that there is one additional question from my side.

I'd like to run two different computations just in one input file, by changing the load and boundary. Now I used the CSTIffness to add some elastic springs. For the second run, the following input structure is used:

BATCH
MESH
END

    PARA
    kx=...
    ky=...
    kz=...

    CSTIffness,SET
     node x1 y1 z1  kx  ky  kz
     ....

END

So for the second computation I want to reset the elastic spring with other values.
Now the error message is that the file "csti0000" can not be found.
I checked the code and found that for the second run, following message is plotted from the "opnfil.f" file:

 (opnfil.f): mac=csti0001
 (opnfil.f): mac=ebou0000
 (opnfil.f): mac=efor0000
 (opnfil.f): mac=csti0000

It seems that the file "csti0000" was deleted for the first run, but still searched for the second one. And the file "csti0001" can be found correctly? Maybe...
Do you have any suggestion?

An input file in attachment can be found. Thank you so much.

[Prof. R.L. Taylor]

We will investigate the reason.  The file exists as csti0001  not csti0000

[Prof. R.L. Taylor]

In pmacr3.f you can add the following under the command for MESH
        ndamf = 0
        nmasf = 0
        nstif = 0

I hope that helps you to get the right files

[sicheng6699]

In pmacr3.f you can add the following under the command for MESH
        ndamf = 0
        nmasf = 0
        nstif = 0

I hope that helps you to get the right files

Many thanks, it works perfectly!