Computer simulation of fracture spreading in a visco-elastic solid

✍ Scribed by Davor Juricic; Michael P. Wnuk

• Book ID: 104655397
• Publisher: Springer Netherlands
• Year: 1972
• Tongue: English
• Weight: 494 KB
• Volume: 8
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00186124

✦ Synopsis

The governing equation of motion, which describes the early stages of fracture in a rate-sensitive solid, has been integrated through the use of the analog computer type EAI 380. Three regimes of the tensile pulsating loading, for which there are no closed form solutions, are considered:

(i) sinusoidal load, (ii) trapezoidal load, (iii) randomly oscillating load. Signals of these shapes superposed on a constant tensile stress produced three different patterns of crack growth and were photographed directly from the screen of a dual-beam oscilloscope. It appears that the rate of fatigue crack spreading in a time-dependent matrix is enhanced by the pulsating component of load in the degree coinciding with the sequence of the above listing.