Istituto di Scienza e Tecnologie dell'Informazione     
Davini C., Podio Guidugli P. Is there a critical void fraction for the yield stress in metals?. Internal note IEI-B80-32, 1980.
We derive lower bounds for the curve of yeld stress vs. void fraction in a metal for vaious void pressures, and use these lower bounds, together with upper bounds of Keife and Stahlberg [1], to delimit the true curve. Our analysis suggests tha one cannot expect to have a sudden reduction of yeld stress at any specific void fraction.
Subject Stahlberg

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