An Extension Failure Criterion for Brittle Rock

<div>Yield curves of different criteria on <span class="nowrap"><svg height="11.6425pt" id="M169" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -11.4361 11.607 11.6425" width="11.607pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M574 449L545 460C526 432 516 430 487 430C404 430 311 435 226 435C104 435 56 379 25 341L43 318C81 354 121 372 181 372C161 246 87 53 23 3L30 -12C48 -12 88 -4 113 11C157 75 207 248 232 371L386 367L326 109C321 86 318 66 318 50C318 4 339 -12 366 -12C410 -12 461 21 505 69L492 96C467 79 434 60 418 60C406 60 400 78 411 147C422 217 439 300 457 366C487 366 524 367 536 370C547 385 558 408 574 449Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.684,-5.741)"><path d="M310 541L304 571C290 586 211 619 185 610L80 76L131 52L310 541Z"></path></g></svg>-</span>plane.</div>

Advances in Civil Engineering

An Extension Failure Criterion for Brittle Rock

Figure 6