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Mohr's Circle-Coulomb Failure Envelope Toolset

Mohr-Coulomb Failure Analysis and Graphing for Windows

Download Animated Demonstration and Training Movies

Single User License: $75

New Version 3.0 Now Available! -- Featuring:

Improved Data Entry -- Spreadsheet-style data entry interface simplifies data input.  Enter data as weight retained and percent passing is calculated automatically.

Improved Clipboard Support -- Data entry is simplified with clipboard support for cut/copy/paste of samples and graph pages.

Support for Unicode character sets.


MohrView allows you to produce professional quality, highly customized graphs of Mohr circles and Coulomb failure envelopes. MohrView also calculates many different parameters associated with the plot..

MohrView Features

  • Unlimited number of samples per graph
  • Unlimited number of graphs per document (prints one graph per page)
  • Print graphs with choice or page margins, headers, footers, and graph borders
  • Insert MohrView plots into OLE containers such as Word or Excel
  • Display a text annotation on each graph in a moveable, and customizable text box
  • Display individual sample labels, or a moveable, customizable legend key, or both
  • Select fonts, and colors for each graph
  • Extremely easy to use, and very fast program operation
  • Set maximum and minimum values for each axis, specify axis origin.
  • Moveable labels on graphs
  • Many calculations displayed with commonly used Greek symbols
  • Display full circle or semi-circle
  • Select different stress units for each graph, including support for custom stress units
  • Display a unique title for each graph
  • Easy-to-use Windows features such as print preview,
  • Context-sensitive on-line help
  • Import data from, or export data to, a tab-delimited ASCII text file

MohrView Calculations:

  • Stresses at the Pole
  • Maximum obliquity angle
  • Stresses on a plane from principal stresses and plane angle
  • Principal stresses from stresses on a plane and plane angle
  • Plane angle from principal stresses and normal stress on a plane
  • Plane angle from principal stresses and shear stress on a plane
  • Resultant stress on the plane
  • Major stress from minor stress, phi, and cohesion
  • Minor stress from major stress, phi, and cohesion
  • Cohesion from minor stress, major stress, and phi
  • Phi from minor stress, major stress, and cohesion
  • Failure stresses from principal stresses and coulomb envelope
  • Major principal stress from shear failure stress and phi angle
  • Minor principal stress from shear failure stress and phi angle
  • Major principal stress from normal failure stress and coulomb envelope
  • Minor principal stress from normal failure stress and coulomb envelope

MohrView Screen Shots
Click on an image to view full size

MohrView plots Mohr circles and Coulomb failure envelopes.   MohrView calculates and plots other features such as principal stresses, stresses at failure, obliquity angle, resultant stress, and the critical angle.  (15599 bytes)
You can embed MohrView plots in OLE container applications, such as Microsoft Excel (shown here), other Microsoft Office applications, Corel WordPerfect Suite, and many other products.  This screen also shows a single failure envelope for multiple Mohr circles.  (25916 bytes)
mohr4.gif (15058 bytes) MohrView allows you to plot a plane oriented to the principal stresses.  Then calculate the pole stresses, and the normal and shear stresses on that plane.  (15058 bytes)
mohr5.gif (14961 bytes) MohrView accommodates both negative and positive normal stresses.   This diagram shows a plot of major and minor stresses, as well as intermediate principal stress.  (14961 bytes)
mohr6.gif (15307 bytes) Shown in this diagram is a Mohr circle and Coulomb failure envelope.   MohrView calculates and displays the normal and shear stresses at failure (15307 bytes)
mohr7.gif (15370 bytes) MohrView can calculate and display Coulomb failure envelopes for multiple samples.  Shown here are Mohr circles and Coulomb failure envelopes for a clay and a sand sample. (15370 bytes)