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Calculator Introduction
For a given stress state (sx, sy, and txy) and safety factor, this calculator applies the maximum normal stress criterion and Mohr's theory to check if the principal stresses exceed the given tensile strength (st) or compressive strength (sc).
Inputs
 Ultimate Tensile Strength st: Pa kPa MPa GPa psi ksi Ultimate Compression Stress sc: Safety Factor: Normal Stress sx: Pa kPa MPa GPa psi ksi Normal Stress sy: Shear Stress txy:
 Maximum Normal Stress s1: 12.0  MPa Pa kPa MPa GPa psi ksi Minimum Normal Stress s2: -10.0  MPa Principal Angle qp: 2.60  deg rad deg Maximum Shear Stress tmax: 11.0  MPa Maximum Shear Angle qs1: 47.6  deg and qs2: -42.4  deg

For the given ultimate strength and safety factor 1, the current stress state is considered safe under the maximum normal stress criterion.

However, it is NOT safe according to Mohr's theory.

Equations behind the Calculator
The formulas used in this calculator are based on the following graphic,

Further detail is provided in the brittle materials failure criteria page.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.

Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

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Wages, employment opportunities, and growth projections for STEM jobs.

CNC Machining Design Guide