Problem

Bench slopes — common in transportation corridors, quarries, and open-pit mines — have complex stress distributions due to their stepped geometry. Under dynamic loading, benches tend to: 

• Amplify seismic motions 

• Concentrate shear stresses at corners 

• Exhibit multi-directional failure modes 

These complexities cause fixed meshes to distort early in the simulation, leading to inaccurate results or complete numerical failure. 

Challenge

A distorted mesh introduces a dangerous mix of: 

• Artificial stress locking 

• Unrealistic plastic deformation 

• Incorrect prediction of failure planes 

• Sudden model instability 

For civil and mining engineers, the consequences are real: 

• Misidentifying critical acceleration 

• Incorrectly sizing reinforcement 

• Underestimating displacement demand 

• Failing regulatory review due to low model defensibility 

Bench slopes are already challenging — unreliable mesh behavior makes them far worse. 

Solution 

ITASCA’s adaptive remeshing rebuilds the geometry and mesh automatically as deformation accumulates. This provides critical advantages: 

• Mesh quality remains high even under large displacement 

• Stress fields stay physically meaningful 

• Shear band initiation and propagation are captured correctly 

• Complex bench geometry does not compromise analysis integrity 

For seismic analysis, this means engineers can: 

• Accurately simulate dynamic amplifications 

• Identify true failure modes 

• Evaluate reinforcement needs with confidence 

• Model worst-case events without losing solution stability 

Adaptive remeshing delivers the reliability needed to design safer, more resilient bench slopes. 

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