Newmark Seismic Displacement Calculator

Calculate Newmark sliding block displacement for seismic slope stability. d = f(a_max, a_c/a_max) from Jibson regression: log(d) = 1.521·log(Ia) - 1.993·log(a_c) - 1.546. Critical acceleration a_c from static FOS.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How It Works

Calculate Newmark sliding block displacement for seismic slope stability. d = f(a_max, a_c/a_max) from Jibson regression: log(d) = 1.521·log(Ia) - 1.993·log(a_c) - 1.546. Critical acceleration a_c from static FOS

Each component has a specific meaning:

  • Jibson regression: log = 1 — The jibson regression: log = 1 recorded for the patient or scenario being assessed.

Note: Interpret the newmark seismic result against the clinical thresholds and context described above.

How to Use

Enter the Jibson regression: log = 1 for the patient or scenario you are assessing. Calculate Newmark sliding block displacement for seismic slope stability. d = f(a_max, a_c/a_max) from Jibson regression: log(d) = 1.521·log(Ia) - 1.993·log(a_c) - 1.546. Critical acceleration a_c from static FOS. Use the newmark seismic result to inform your clinical assessment.

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Frequently Asked Questions