modulus of rigidity: meaning, definition, pronunciation and examples
Very LowTechnical/Specialized
Quick answer
What does “modulus of rigidity” mean?
A measure of a material's resistance to shear deformation (shape change at constant volume) under applied force.
Audio
Pronunciation
Definition
Meaning and Definition
A measure of a material's resistance to shear deformation (shape change at constant volume) under applied force.
A specific elastic constant (denoted G or sometimes μ) in continuum mechanics, defined as the ratio of shear stress to shear strain in the elastic (linear) region of deformation for a given material.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage or definition. Spelling follows standard UK/US conventions for surrounding text (e.g., 'rigidity' vs. 'rigidity').
Connotations
Purely technical, with identical scientific meaning in both variants.
Frequency
Equally rare and specialized in both dialects, confined to identical technical contexts.
Grammar
How to Use “modulus of rigidity” in a Sentence
The modulus of rigidity of [MATERIAL] is [VALUE].To calculate/find/determine the modulus of rigidity.[MATERIAL] has a high/low modulus of rigidity.Vocabulary
Collocations
Examples
Examples of “modulus of rigidity” in a Sentence
verb
British English
- The experiment aimed to characterise how the alloy behaved when stressed, allowing engineers to precisely determine its modulus of rigidity.
American English
- The software analyzes the material's response to shear forces, helping to characterize and compute its modulus of rigidity.
adverb
British English
- The material deformed almost purely elastically, allowing a straightforward calculation of the modulus of rigidity.
American English
- The beam was designed rigidly enough that its high modulus of rigidity was the controlling factor.
adjective
British English
- The modulus of rigidity value is a critical parameter for the design.
American English
- Shear modulus data is presented in the appendix.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Exclusively used in advanced physics, materials engineering, and mechanical engineering textbooks and research papers.
Everyday
Never used in everyday conversation.
Technical
Core term in solid mechanics, materials testing, and structural design calculations involving shear stress.
Vocabulary
Synonyms of “modulus of rigidity”
Vocabulary
Antonyms of “modulus of rigidity”
Watch out
Common Mistakes When Using “modulus of rigidity”
- Using 'modulus of rigidity' interchangeably with 'Young's modulus'. They describe resistance to different types of deformation (shear vs. tension).
- Pronouncing 'modulus' as /mɒˈduː.ləs/ instead of /ˈmɒd.jʊ.ləs/.
- Omitting the 'of' in the phrase (e.g., 'modulus rigidity').
FAQ
Frequently Asked Questions
Yes, 'shear modulus' and 'modulus of rigidity' are synonymous terms in engineering and physics.
It is measured in Pascals (Pa), Gigapascals (GPa), or pounds per square inch (psi), the same units as pressure and stress.
Young's modulus measures resistance to linear (tensile/compressive) deformation, while the modulus of rigidity measures resistance to shear (sliding/twisting) deformation.
Elastomers like rubber have a relatively low modulus of rigidity, meaning they deform easily under shear stress, which contributes to their flexibility.
A measure of a material's resistance to shear deformation (shape change at constant volume) under applied force.
Modulus of rigidity is usually technical/specialized in register.
Modulus of rigidity: in British English it is pronounced /ˈmɒd.jʊ.ləs əv rɪˈdʒɪd.ɪ.ti/, and in American English it is pronounced /ˈmɑː.dʒə.ləs əv rɪˈdʒɪd.ə.t̬i/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of the RIGIDity modulus as how much a material RIGIDly resists being 'scissored' or slid in layers (shear). A rigid block is hard to shear.
Conceptual Metaphor
The material's internal 'stiffness' against a sliding or twisting force, akin to the friction between layers of a solid.
Practice
Quiz
What type of deformation does the modulus of rigidity quantify?