Mohr's Circle Module

  • Mohr's circle analysis for plane stress, plane strain, strain rosettes, and moments of inertia problems is available in MDSolids.
  • Normal stresses in the x- and y-directions are specified in terms of either tension or compression stress rather than either a positive or a negative number. Shear stress is defined as either clockwise or counterclockwise on the x-face of the stress element.
  • An orientation diagram is displayed to show the stresses in the x- and y-directions as specified by the user.
  • The points that correspond to the x- and y-faces of the stress element are indicated on the circle.
  • Separate pictures are drawn to indicate the orientation of the principal stresses relative to the xy coordinate system as well as the maximum shear stress orientation.
  • The drawings give users a clear visual depiction of the various angles in the xy space and the sigma-tau space as well as the directions of rotation in each coordinate system.
  • Stresses at any arbitrary orientation can also be investigated. A drawing surrounded with a protractor-like border enables the user to obtain stresses at any arbitrary orientation with merely one mouse click.
  • The Mohr's circle calculations can be accessed from both the beam and torsion member portions of MDSolids. Data from combined stress situations is automatically supplied from these routines to the Mohr's circle calculation.

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  • Plane strain calculations can be made from normal and shear strain data.
  • Two types of strain gage rosettes (i.e., rectangular and delta) can be analyzed.

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  • Principal moments of inertia can be computed from the moments of inertia about two orthogonal axes plus the product of inertia.