Pressure calculation method

From: Alexandre A. Vakhrouchev (
Date: Sat May 26 2007 - 22:42:36 CDT

Dear colleagues!

Would you point me what method (equation) is used to calculate pressure for
Why it changes its sign? I guess because pressure is represented as stress
say if I'm wrong.

Best regards,
Dr. Alexandre Vakhrouchev.

Inst. of App. Mechanics,
Ural Branch of Russian Academy of Sciences,

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