Rigidity

(redirected from rigid)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

rigidity

[ri′jid·əd·ē]
(astrophysics)
The ratio of the momentum of a cosmic-ray particle to its electric charge, in units of the electron charge.
(mechanics)
The quality or state of resisting change in form.

Rigidity

 

the capability of a body or structure to resist deformation; a physicogeometric characteristic of the cross section of a structural element. In the case of simple deformations within the limits of Hooke’s law, rigidity is determined numerically as the product of the modulus of elasticity E (on elongation-contraction and on flexure) or G (on shear and torsion) and some geometric characteristic of the element cross section:EF on elongation-compression, El on flexure, GF on shear, and so on, where F is the cross section area, and I is the axial moment of inertia. The concept of rigidity is being widely used in the solution of problems concerning the strength of materials.


Rigidity

 

in physiology, a functional state of the skeletal muscles, characterized by a marked increase in their tone and in their resistance to deformation. Muscle rigidity results from changes in the character of the neural influences that the central and peripheral nervous systems continuously exert to the muscles. An example of rigidity is decerebrate rigidity.

In man, injuries and disturbances of the central nervous system and pathological irritation of the peripheral nerves give rise to various manifestations of muscle rigidity. Thus, poisoning by certain toxins, diseases of the nervous system, and hypnosis may cause a state of plastic tone, characterized by a waxlike condition of the muscles. In this state the extremities may easily be placed in any position and can remain thus, unchanged, for a prolonged period. Plastic tone characterizes a state of the nervous system called catalepsy, or plastic rigidity.

rigidity

That property of a material which resists a change in its physical shape.

rigidity

i. The resistance offered by a body when under load. It is the ratio of the stress to the strain. Also known as stiffness
ii. A property of a gyroscope by which its axis will remain in a fixed direction in space unless the rotor is acted upon by an external torque.
References in periodicals archive ?
Rigid PCB shipments are up 7.8% and bookings are down 6% in October 2006 from October 2005.
Durastrength 200 weatherable acrylic impact modifier for rigid PVC siding, profiles, and injection molding.
Like Driver's Pickle, Rigid Corrugated is also nearing its centenary celebrations and in the build-up to this the group is undergoing an intensive investment drive, backed by parent company VPK Packaging Group, which includes a brand new world-class corrugated manufacturing facility in Selby and a state-of-the-art logistics warehouse at Desborough.
Thursday, October 2--Session E: Processing innovations: "Mechanical recycling of scrap from headliner rigid foam and prefabricated PU headliner production and from post consumer headliners," Werner Rasshofer and Don Schomer, Bayer Polymers; "Innovative filler injection system lot powdered recycled urethane," Piero Corradi and Barry Pile, Cannon; "Large scale polyurethane recycling," Gunter Bauer and Michael Kugler, Regra Ecosystems GmbH: "Remote monitoring of polyurethane lines and other manufacturing processes," Julie Stout and Theron Sherman, Linden Industries; and "Hennecke conveyor and mold carrier systems offer production flexibility for the just-in-time manufacturing environment," Barry P.
Market Research Future (MRFR) has recently launched a report with an analysis on the global rigid plastic packaging market over the forecast period.
Lifestyle and social influences: Lifestyle and social influencesare driving consumer demand for convenience products packed in rigid plastic packaging.
By the way, will you solder the wires directly to the rigid board or use connectors?
Search terms used were: amputation, dressing, amput* (which picked up amputee/s, amputations, amputate), lower limb, dysvascular, transtibial, below knee, rigid dressing and rigid removable dressing in varying combinations.
The E-Series R100E is a completely new Volvo CE 100-ton (95-tonne) rigid hauler that combines a wealth of market and customer knowledge with proven components, new technologies and a striking new design--all providing a cost-effective and productive solution to fulfill the needs of today's mining and quarrying customers.
The E-Series R100E is a completely new Volvo CE 100-ton (95-tonne) rigid hauler that combines a wealth of market and customer knowledge with proven components, new technologies and a striking new design - all providing a cost-effective and productive solution to fulfil the needs of today's mining and quarrying customers.
San Jose, CA, May 12, 2017 --(PR.com)-- Credence Research has recently issued a new market assessment report titled "Rigid Packaging - Growth, Future Prospects and Competitive Analysis, 2016 - 2022." The global Rigid Packaging Market study provides a comprehensive view of the ongoing and future phases of the Rigid Packaging industry based on parameters such as major commercial events, research initiatives, government guidelines, market drivers, restraints and opportunities and detailed industry segmentation and regional distribution.