What is the load stress factor for cast iron gear pair if BHN?
If for steel pinion BHN is 350 the value of load stress factor is. 1. 0.48. 1.96.
How do you calculate load stress factor?
= Velocity ratio = TG / TP, K = Load-stress factor (also known as material combination factor) in N/mm2. EG = Young’s modulus for the material of the gear in N/mm2.
How do you find the maximum bending stress?
This is called “maximum surface stress” and is typically represented by the sigma sign. In order to calculate maximum surface stress, you must know the bending moment, the distance from the neutral axis to the outer surface where the maximum stress occurs and the moment of inertia.
What is the maximum normal stress?
The maximum normal stress criterion also known as Coulomb’s criterion is based on the Maximum normal stress theory. According to this theory failure occurs when the maximum principal stress reaches the ultimate strength of the material for simple tension. This criterion is used for brittle materials.
What is maximum and minimum principal stress?
Principal stresses are maximum and minimum value of normal stresses on a plane (when rotated through an angle) on which there is no shear stress. Principal Plane. It is that plane on which the principal stresses act and shear stress is zero. Principal Angle.
What is Rankine theory of failure?
Rankine’s Theory assumes that failure will occur when the maximum principal stress at any point reaches a value equal to the tensile stress in a simple tension specimen at failure. This theory is also called the Maximum Stress Theory. …
What is maximum principal stress induced?
Maximum Principal Stress theory (M.P.S.T) Stresses induced under combined loading conditions and (Syt and Sut) obtained using tension test which are called theories of failure. T d Member is subjected to both Twisting moment and uniaxial load, hence combined loading conditions.
Is principal stress maximum stress?
At the principal stress angle, θp, the shear stress will always be zero, as shown in the diagram. And the maximum shear stress will occur when the two principal normal stresses, σ1 and σ2, are equal. In some situations, stresses (both normal and shear) are known in all three directions.
What is the first principal stress?
The 1st principal stress gives you the value of stress that is normal to the plane in which the shear stress is zero. The 1st principal stress helps you understand the maximum tensile stress induced in the part due to the loading conditions.
What is principal strain explain with an example?
Principal Angle: The angle of orientation at which principal stresses occur for a specific point. Principal Strain: Maximum and minimum normal strain possible for a specific point on a structural element. Shear strain is 0 at the orientation where principal strain occurs.
What is the unit of principal stress?
Calculator:
| RESULTS | ||
|---|---|---|
| Parameter | Value | Unit |
| Maximum principal stress (σmax) | — | MPa |
| Minimum principal stress (σmin) | — | |
| Maximum shear stress* (τmax) | — | |