What this calculator helps you find
The beam calculator includes an elastic deflection diagram. Open the calculator, select the supports and loads, then enter Young's modulus E and second moment of area I in the Deflection properties control. Deflection depends on both the load model and the member's bending stiffness EI.
Relevant formula
Worked example
For a 10 m simple span carrying a center load, increasing the second moment of area by a factor of two halves the calculated elastic deflection, provided the other inputs remain unchanged.
Use results responsibly
Use this tool for idealized, static two-dimensional analysis and for checking calculations. Confirm units, sign conventions, supports, material properties, and applicable design standards before using results in a project. Review the assumptions and limitations and validation records.