In Latin it is where we find the etymological origin of the word that we are going to analyze next in an exhaustive way. Specifically, we can establish that it comes from the verb rule That had two clear meanings. Thus, on the one hand, it was synonymous of being stiff, of not being able to bend; and on the other, it was equivalent to being cold frozen.
It is known as rigidity to what possesses the particularity of being rigid (that is, it cannot be folded or that is rigorous, inflexible and severe). For giving examples of use: “You have to do something to avoid the stiffness of your spine”, “My father was always characterized by his rigidity”.
In the physical sense, the idea of rigidity is associated with the lack of elasticity or ability to move . Relaxation exercises, elongation and good posture are keys to avoid stiffness. In this way, it is possible to rest better and achieve better performance in physical or athletic activities.
On other occasions, however, this cervical stiffness can occur for reasons as simple as having spent many hours at the computer, a bad sleeping position or even having the neck exposed to cold and air currents. In order to put an end to the rigidity caused by these or other similar reasons there are a number of tricks or home remedies.
Among these remedies we can find applying warm compresses on the neck, making use of the so-called orthopedic pillows, performing relaxation or meditation exercises, including pineapple food, taking hot showers and letting it fall so Directly on the neck or take some turmeric infusions.
However, there are many other home remedies to alleviate this pain and even medical treatments when the situation is serious.
Stiffness, on the other hand, can be revealed through a severe behavior or impeccable behavior according to the rules ethical and morals . A rigid man, in this context, does not allow any slippage or behavior that can be objected at the social level.
For the engineering , the rigidity of something is evidenced by the ability of a structural part or of a solid material to withstand stress without deformation or movement . The quantification of the stiffness against various load configurations can be expressed through the stiffness coefficients, which are physical quantities.
It should also be mentioned that the stiffness is usually calculated by identifying the reason that arises from comparing the force that has been applied and the displacement that occurred as a result of the effects of said force. force . It is known as axial stiffness of a beam or a bar to the ability to withstand attempts of stretching or compaction following the force that has been applied based on its axis.
The flexural stiffness of a bar, on the other hand, describes the link between the bending moment that was applied at one end and the angle that has been turned by said end when the deformation is suffered.