Spring Hangers are designed to isolate low-frequency vibrations in suspended piping and equipment – preventing transmission of vibration to the building structure through the piping systems. The products incorporate a color-coded steel spring for easy identification in the field. Easyflex offers pre-compressed, 30° angularity, and pre-positioning hangers.
Our pre-compressed designs are pre-compressed to the rated deflection to support the suspended equipment or piping at a fixed elevation during installation, regardless of load changes. The angularity hangers have a 30° misalignment capability, spring diameters, and hanger box lower hole sizes are sufficiently sized to permit the hanger rod to swing approximately 30° before contacting the box.
Pre-positioning hanger designs incorporate a means for supporting the suspended equipment or piping at a fixed elevation during installation, regardless of load changes and transferring the load to the spring.
Spring hangers and spring mounts are one of the most sought-after anti-vibration products to restrict vibrations in suspended structures, pipes, ducts, rotary machinery, and vertical systems that support a heavy load.
But before you choose the right spring hanger for your business application, you must know some of the common terminologies that determine the characteristics of spring.
When the spring in rest or neutral position is stretched through the application of external force, the spring is in tension. The tensile stress of a spring is determined by the tensile strength applied per unit area of the spring. A spring hanger that is subjected to heavy load should ideally be resistant to high tensile stress.
When a spring is compressed from its free form through external force, it is said to be in compression. The compressive stress of the spring is calculated by the compressive force applied per unit area of spring (lbs/in²). One must calculate the compressive stress of a spring hanger or spring mount to determine if it is apt for their specific application.
When spring is subjected to equal and opposite forces but not on the same axis, these forces can shear the spring into two. Shear stress is calculated by the shear force applied to the unit area of the spring (lbs/in²). When spring is in a state of stress, it experiences tension, compression, and shear simultaneously.
The tension or compression of the helical spring is directly proportional to the force applied to the spring. The ratio of proportionality of the force used with the displacement of the spring is known as the spring constant. Units lbs/in.
F= External force on spring.
x= Displacement of spring (Compression or tension)
K= Spring Constant.
In a helical spring, the spring constant remains the same until the force is within the elastic limit of the spring.
Force Deflection of Spring:
This is defined by the shape of the force-displacement curve, which is generally a straight line as the spring constant remains unchanged within the elastic limit of spring. If the constant spring increases with displacement, it is referred to as a hard spring, and when the spring constant decreases with deflection, it is called a soft spring.
The area under the force-displacement curve is a measure of energy stored in the spring during tension, compression, or shear.
If a spring is not at its natural length during rest or neutral position, it is said to be in compression or tension. The amount of tension or compression in the rest position is called the preload of a spring.
Elastic Modulus and Shear Modulus:
If the force applied to the spring is greater than its elastic limit, it can cause permanent deformation. The ratio of force exerted on the spring to the amount of deformation of the spring is called elastic modulus. On the other hand, the shear modulus is the shear stress and strain ratio.
Confused about the variety of spring hangers and mounts in the market? Contact Easyflex at [email protected] to help you make the right choice for your business.