Table of Contents
Does material affect vibration?
Material properties are properties affecting the free vibration behavior. Moreover, effect of axial load on natural frequencies was also investigated in this study.
What are elastic properties?
Elasticity is defined as a physical property of materials which return to their original shape after the stress that had caused the deformation is no longer applied.
What are the properties of an elastic material?
Elasticity, ability of a deformed material body to return to its original shape and size when the forces causing the deformation are removed. A body with this ability is said to behave (or respond) elastically.
How does material affect natural frequency?
The actual frequency is dependent upon the properties of the material the object is made of (this affects the speed of the wave) and the length of the material (this affects the wavelength of the wave).
What material carries vibrations best?
Light materials carry sound vibrations better than dense, heavy objects. A material’s elasticity or “springiness” is also important for transmitting sound: less elastic substances such as hard foams and paper are more likely to absorb sound than carry it.
What forced vibration?
Forced vibration is a type of vibration in which a force is repeatedly applied to a mechanical system. Forced vibration is when an alternating force or motion is applied to a mechanical system, for example when a washing machine shakes due to an imbalance.
What material is most elastic?
Elasticity is the ability of a material to regain its own original shape after being stretched according to which, rubber is the most elastic substance. But when we define elasticity in physics it is the ratio of stress to strain. It means that the shape which has more resistance to change is more elastic.
What are some examples of elastic items?
Common elastic items include:
- Soft Drinks. Soft drinks aren’t a necessity, so a big increase in price would cause people to stop buying them or look for other brands.
- Cereal. Like soft drinks, cereal isn’t a necessity and there are plenty of different choices.
What objects are elastic?
Many objects are designed specifically to store elastic potential energy, for example:
- The coil spring of a wind-up clock.
- An archer’s stretched bow.
- A bent diving board, just before a divers jump.
- The twisted rubber band which powers a toy airplane.
- A bouncy ball, compressed at the moment it bounces off a brick wall.
What are the disadvantages of resonance?
The disadvantages of resonance are as follows: A negative effect of resonance could be the effect of waves hitting a rock face. The vibration of kinetic energy from the wave resonates through the rock face causing cracks and eventually great slabs of the cliff fall into the sea.
What is natural frequency and damping ratio?
The natural frequency is the oscillation frequency if there is no damping and is an indication of the relative speed of response of the system. The damping ratio tells you how oscillatory (or not) the step response is and how peaky (or not) the frequency response is.
Can we minimize vibration?
The following precautions help to reduce whole-body vibration exposure: Mechanically isolate the vibrating source or surface to reduce exposure. Ensure that equipment is well maintained to avoid excessive vibration. Install vibration damping seats.
How does the elastic modulus of a material affect its strength?
The elastic modulus of the material affects how much it deflects under a load, and the strength of the material determines the stresses that it can withstand before it fails. The ductility of a material also plays a significant role in determining when a material will break as it is loaded beyond its elastic limit.
How does the mechanical properties of a material affect it?
The mechanical properties of a material affect how it behaves as it is loaded. The elastic modulus of the material affects how much it deflects under a load, and the strength of the material determines the stresses that it can withstand before it fails.
Why are there so many factors affecting elasticity?
FACTORS AFFECTING ELASTICITY It is found that bodies lose their elastic limit, due to elastic fatigue. Therefore, the manufacture should choose the material in such a way that it should regain its elastic property even when it is subjected to large number of cycles of stress. For example substances like quartz, phosphor, bronze etc.
How does annealing affect the elastic property of a material?
Usually this process is adopted for the material to increase the softness and ductility in the material. But if annealing is made to a material it results in the formation of large crystal grains, which ultimately reduces the elastic property of the material.