What is the Wahl’s factor if spring index is 6
This discussion on Find the Wahl’s factor if spring index is 6.
a)1.2020b)1.2424c)1.2525d)1.5252Correct answer is option ‘C’..
What is the Wahl’s factor to consider stress concentration due to curvature effect of spring when spring index is 6
Find the Wahl’s factor if spring index is 6. Explanation: K=[4C-1/4C-4]+0.615/C.
What are active coils in a spring
Active coils are within the spring. An inactive coil is at the end of the spring on each side, therefore, active coils are all of the coils that aren’t on the ends of a spring. If the spring has an open end, meaning the coil at the end is cut in half, that means it has a half inactive coil.
What is Wahl factor why it is used
Explanation: A stress factor that is caused by the changes and direct shear in coil curvature is called Wahl’s Factor. It is used to measure the compression in the spring. It is also used to derive an equation for all type of stress and these are: Torsional shear stress.
What does spring surge mean why is it important
Surging refers to oscillation specific to a coil spring. When an external force having a frequency component close to the spring’s natural frequency acts upon the spring, an oscillation phenomenon called surging occurs owing to the mass of the spring.
Which of the following function can the Spring perform
Mechanical Engineering Question Explanation: Spring can easily perform all the listed functions.
How is Wahl factor calculated
Spring striffness: The stiffness is defined as the load per unit deflection. In order to take into account the effect of direct shear and change in coil curvature a stress factor is defined, which is known as Wahl’s factor.
What is surge in spring
Surge in spring: When the natural frequency of vibrations of the spring coincides with the frequency of external periodic force, which acts on it, resonance occurs. In this state, the spring is subjected to a wave of successive compressions of coils that travels from one end to the other and back.
How do you calculate spring index
The spring index of your compression spring determines the tightness of your coils as well as the manufacturing difficulty of your spring. To calculate spring index you must divide the mean diameter (D) by the wire diameter (d).
Which type of stress is induced in a screw body
Torsional shear stressWhich type of stress is induced in a screw body? Ans- Torsional shear stress as it is induced because of the torque or twisting moment.
Which is better leaf spring or coil spring
Leaf springs are better for heavier vehicles and those who may need to haul more weight. They’re also simpler but less adjustable than coil springs. Coil spring suspension systems are better for performance driving as you can fine-tune your suspension. They offer greater comfort and flexibility for improved handling.
Why are mechanical springs used
Mechanical springs are used for a wide range of applications or uses. Their main applications are 1) To exert force, 2) To provide flexibility and 3) To store or absorb energy. … To apply forces and controlling motion in clutches and brakes It helps in storing energy as in case of watches and toys.
What is Wahl factor and why is it required
Wahl’s Factor: In order to take into account the effect of direct shear and change in coil curvature, a stress factor is defined known as Wahl’s factor. A helical spring made from the wire of circular cross-section is shown in Fig. D and d are the mean coil diameter and wire diameter respectively.
What type of stress is induced in helical compression spring
torsional shear stressAnswer. (i) helical spring: They are made of wire coiled into a helical form, the load being applied along the axis of the helix. In these type of springs the major stresses is torsional shear stress due to twisting. They are both used in tension and compression.
What is curvature effect in spring
Let us look at a small section of a circular spring, as shown in the figure. … Hence, for a given wire diameter, a spring with smaller diameter will experience more difference of shear strain between outside surface and inside surface compared to its larger counterpart. This phenomenon is termed as curvature effect.
Which type of spring have only active coils
Helical tension springsHelical tension springs have active coils.
When a circular shaft is subjected to torque the torsional shear stress is
Explanation: Shear stress is produced when the shaft is subjected to pure twisting (torsion). The shear stress due to twisting moment is zero at the axis of the shaft.
In which of the following case stress concentration factor is ignored
In which of the following case stress concentration factor is ignored? Explanation: In ductile materials under static load, there is plastic deformation near yielding point and hence redistribution of stresses take place.
What will happen if stresses induced due to surge
What will happen if stresses induced due to surge in the spring exceeds the endurance limit stress of the spring. Explanation: If endurance limit is passed, fatigue failure will follow. … Surge is caused by resonance effect in the spring.