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Betti's Theorem

Mathematical Physics

Betti's theorem, also known as the Maxwell-Betti reciprocal work theorem, was discovered by Enrico Betti in 1872. It states that for a linear elastic structure subjected to two different sets of forces, the work done by the first set of forces acting through the displacements produced by the second set equals the work done by the second set acting through the displacements produced by the first. The theorem is used in structural engineering to define influence lines and to derive the boundary element method.

Facts
Statement
Betti's theorem states that for a linear elastic structure subject to two sets of forces, the work done by the first set of forces acting through the displacements produced by the second set of forces equals the work done by the second set of forces acting through the displacements produced by the first set of forces. 2
Proof Year
1872 2
Classification
Statement Form
Identity or Equation 1
Connections

Has Statement Form

Equation, Concepts
Identity, Concepts

Proved By

Source Betti's theorem - Wikipedia
Sources
1. Wikipedia: Betti's theorem
WikipediaLead section, statement-form reference
Quote, Lead section, statement-form reference
Betti's theorem, also known as Maxwell-Betti reciprocal work theorem, discovered by Enrico Betti in 1872, states that for a linear elastic structure subject to two sets of forces {Pi} i=1,...,n and {Qj}, j=1,2,...,n, the work done by the set P through the displacements produced by the set Q is equal to the work done by the set Q through the displacements produced by the set P.
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2. Betti's theorem - Wikipedia
  • Lead paragraph
    the work done by the set P through the displacements produced by the set Q is equal to the work done by the set Q through the displacements produced by the set P
  • Lead paragraph, discovery year
    discovered by Enrico Betti in 1872
  • Proved By: Enrico Betti, Lead section
    Betti's theorem, also known as Maxwell-Betti reciprocal work theorem, discovered by Enrico Betti in 1872, states that for a linear elastic structure subject to two sets of forces {Pi} i=1,...,n and {Qj}, j=1,2,...,n,
  • Proved By: Enrico Betti, Lead sentence, attribution
    discovered by Enrico Betti in 1872
  • In Group: Electromagnetism, Optics and Continuum Mechanics, Lead section
    Betti's theorem, also known as Maxwell-Betti reciprocal work theorem, discovered by
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