SecProp app for iPhone and iPad

SecProp

Cross Section Properties Calculator

This app calculates the geometric properties of any plane section, giving x,y coordinates of the vertices.

This app is intended for engineering analysis and design, for stress analysis, to calculate the natural frequencies and mode shapes of a machine element, for students.

You can get these properties of a bidimensional shape:

• Area: the total area of the shape;
• Centroid or geometric center: X and Y position, the average arithmetic mean of all the points in the shape
• Moment of inertia about X and Y axis
• Inferior and superior section modulus, also called moment of resistance.
• Centrifugal moment of inertia, which is the sum of all products between the elementary area dA and the distances between this area and that rectangular system of axis
• Polar moment of inertia: It measures also the cross section inertia, but the rotation is made around an axis perpendicular to the cross section plane, which intersect the cross section in the centroid geometric center

The shape is descrived by pairs of X,Y coordinates, that must be inserted clockwise.
The X axis is horizontal, the Y axis is vertical.
The output can be sent by email.

Please be aware that the author assumes no responsibility whatsoever for its use by other parties, and makes no guarantees, expressed or implied, about its quality, reliability, or any other characteristic.
We would appreciate acknowledgement from the users.