Table of Contents
- 1 What is meant by stress concentration?
- 2 What is stress concentration How can we reduce it?
- 3 How will you reduce stress concentration in shaft with keyway?
- 4 What is stress concentration Mcq?
- 5 What is theoretical stress concentration factor (KT)?
- 6 What is the effect of static and cyclic loading on the material?
What is meant by stress concentration?
A stress concentration, also known as a stress riser/raiser, is a point in a part where the stress is significantly greater than its surrounding area. Stress concentrations occur as a result of irregularities in the geometry or within the material of a component structure that cause an interruption of the stress flow.
What is stress concentration How can we reduce it?
Stress concentration reduction in machine parts usually involves providing a smooth path for stress to flow through the component. This can be achieved by several methods, including reducing sharp corners and providing relief notches.
What is stress concentration in machine design?
A stress concentration (also called a stress raiser or a stress riser) is a location in an object where the stress is significantly greater than the surrounding region. Brittle materials will typically fail at the stress concentration.
How do you reduce stress concentration in stepped shaft?
- Methods to reduce stress concentration:
- (a) Additional Notches and Holes in Tension Member:
- (b) Fillet Radius, Undercutting and Notch for Member in Bending.
- (c) Drilling Additional Holes for Shaft:
- (d) Reduction of Stress Concentration in Threaded Members.
How will you reduce stress concentration in shaft with keyway?
The first approach is by changing the keyway geometry such as adding fillet in the corner (Pedersen, 2010; Orthwein, 1979). The fillet will redistribute the stress at the corner which in turn will reduce the stress concentration. …
What is stress concentration Mcq?
Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross-section and highest value of actual stress near discontinuity. Explanation: The stress concentration factor is just the reciprocal of that cited in the question.
Which is following causes of stress concentration?
The stress concentration in a body happens because of the sudden change in the geometry of the body due to cracks, sharp corners, holes, decrease in the cross-section area. Due to these irregularities, there is an increase in the intensity of stress in the body.
What is the effect of stress concentration on the material?
Effect of stress concentration on the material in case of static loading and cyclic loading. In static loading, stress concentration in ductile materials is not so serious as in brittle materials, because in ductile materials local deformation or yielding takes place which reduces the concentration.
What is theoretical stress concentration factor (KT)?
In order to consider the effect of stress concentration and find out localized stresses, a factor called theoretical stress concentration factor is used. Kt= Highest value of actual stress near discontinuity / Nominal stress obtained by elementary equation. Effect of stress concentration on the material in case of static loading and cyclic loading.
What is the effect of static and cyclic loading on the material?
Effect of stress concentration on the material in case of static loading and cyclic loading. Whenever the machine component changes the shape of its cross-section the stress distribution pattern no longer holds good and the neighborhood of the discontinuity is different.
What is the stress at the base of a concrete column?
The stresses at the base with the small radii (0.030”) are definitely a high concentration, ranging all the way above 68,0000 psi. By now, we can guess that a larger radius should help lower the stresses here, even with a much different load case and geometry.