Numerical Simulation of Empty-Hole Effect during Parallel-Hole Cutting under Different In Situ Stress Conditions

<div>Cloud chart of dynamic stress distribution around the empty hole in combined stress field and curves of changes in tension zone for Scheme II. (a) Cloud chart of dynamic stress distribution in combined stress field. (b) Changes in the tension zone.</div>

Advances in Civil Engineering

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Figure 6

Figure 6: Numerical Simulation of Empty-Hole Effect during Parallel-Hole Cutting under Different In Situ Stress Conditions 