Torsion
|
| Turning Torso, Malmo, Sweden. This tower was designed to appear as if in a state of torsion. Actually it is not, but the appearance is a good example of what would happen theoretically if a turning force was applied to one end of the tower. |
Torsion is the state of strain in a material that has been twisted by an applied torque. It will occur whenever a structural element is subject to a twisting force.
Torsion can be seen in a circular-section rubber bar inscribed with rectangles and which is held at each end, with one hand twisting in relation to the other: the rectangles become skewed – or distorted. The state of strain that has distorted the rectangles is called torsion and consists of pure shear. The torsion that exists in the rubber bar will try to make it revert to its original shape.
Torsion develops shear stresses and is equivalent to tension and compression at right angles. This can be seen when wringing a wet towel – the water is squeezed out by torsion-induced compression.
[edit] Torsion is expressed in:
[edit] Related articles on Designing Buildings
Featured articles and news
Local leaders gain new powers to support local high streets
High Street Rental Auctions to be introduced from December.
Infrastructure sector posts second gain for October
With a boost for housebuilder and commercial developer contract awards.
Sustainable construction design teams survey
Shaping the Future of Sustainable Design: Your Voice Matters.
COP29; impacts of construction and updates
Amid criticism, open letters and calls for reform.
The properties of conservation rooflights
Things to consider when choosing the right product.
Adapting to meet changing needs.
London Build: A festival of construction
Co-located with the London Build Fire & Security Expo.
Tasked with locating groups of 10,000 homes with opportunity.
Delivering radical reform in the UK energy market
What are the benefits, barriers and underlying principles.
Information Management Initiative IMI
Building sector-transforming capabilities in emerging technologies.
Recent study of UK households reveals chilling home truths
Poor insulation, EPC knowledge and lack of understanding as to what retrofit might offer.
Embodied Carbon in the Built Environment
Overview, regulations, detail calculations and much more.
Why the construction sector must embrace workplace mental health support
Let’s talk; more importantly now, than ever.
Ensuring the trustworthiness of AI systems
A key growth area, including impacts for construction.
Foundations for the Future: A new model for social housing
To create a social housing pipeline, that reduces the need for continuous government funding.
Mutual Investment Models or MIMs
PPP or PFI, enhanced for public interest by the Welsh Government.
Key points and relevance to construction of meeting, due to reconvene.