[[wiki-architecture]] · [[Architectural Concepts and History]] · [[ARCHITECTURE]] · [[000]] # Duality (mechanical engineering) In mechanical engineering, many terms are associated into pairs called duals. A dual of a relationship is formed by interchanging force (stress) and deformation (strain) in an expression. Here is a partial list of mechanical dualities: force — deformation stress — strain stiffness method — flexibility method == Examples == === Constitutive relation === stress and strain (Hooke's law.) σ = E ε ⟺ ε = 1 E σ {\displaystyle \sigma =E\varepsilon \iff \varepsilon ={\frac {1}{E}}\sigma \,} == See also == Duality (electrical circuits) Hydraulic analogy List of dualities Mechanical–electrical analogies Series and parallel springs == References == - [[Building Services/Fire Engineering]] - [[Structures/Structural Engineering]] - [[History and Theory/Temple Architecture]] - [[Professional Practice/Construction Management/Cost Estimation]] - [[Professional Practice/Public & Cultural/Low Cost Construction]] - [[Wiki-Architecture/Buildings and Structures]] - [[Digital Architecture/ePractice/GIS and Spatial Analysis]] - [[Environmental Design/Strong Foundations for Sustainable Constructions]] - [[Urban and Planning/Smart Buildings]] - [[Professional Practice/Codes & Standards/National Building Code of India/Part 12 - Asset and Facility Management]] Fung, Y. C., A First Course in CONTINUUM MECHANICS, 2nd edition, Prentice-Hall, Inc. 1977