\rә-▐ji-dә-tē\ n (1624) The ability of a structure to resist deformation under load. It is a function of both the material’s modulus of elasticity and, often more critically, of the geometry of the structure. In a loaded beam, whatever the load distribution or type of beam supports, the maximum deflection is inversely proportional to the product, EċI, of the material’s elastic modulus and the moment of inertia of the beam’s cross-section about its neutral axis. See also Section Modulus. The term rigidity is often applied loosely to materials themselves without reference to a particular structure when what the speaker actually has in mind is the elastic modulus.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2011 Springer Science+Business Media, LLC
About this entry
Cite this entry
Gooch, J.W. (2011). Rigidity. In: Gooch, J.W. (eds) Encyclopedic Dictionary of Polymers. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6247-8_10054
Download citation
DOI: https://doi.org/10.1007/978-1-4419-6247-8_10054
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-6246-1
Online ISBN: 978-1-4419-6247-8
eBook Packages: Chemistry and Materials ScienceReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics