Research Article

A New Unified Solution for Circular Opening considering Different Strength Criteria and the Postpeak Elastic Strain Form

Table 4

The radius of plastic zone and critical inner pressures under different criteria.

Strength criterion Strength criterion

MC1.528 (0.413)VM2.728 (0.667)
GMC1.318 (0.322)IDP1.556 (0.422)
GLD1.294 (0.308)MDP1.456 (0.386)
GSMP1.332 (0.329)CDP1.198 (0.242)
TR3.442 (0.712)UST0.51.347 (0.337)
GTSS1.266 (0.291)ā€”ā€”