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Contents

- 1 What is stress concentration in Ansys?
- 2 How do you measure stress concentration factor?
- 3 What is stress concentration factor?
- 4 What is stress concentration factor and stress intensity factor?
- 5 What is nominal stress?
- 6 What is the stress formula?
- 7 What is stress concentration explain with example?
- 8 What is stress concentration give different methods to reduce stress concentration?
- 9 What is stress concentration factor Mcq?
- 10 Where do stress concentration occur?
- 11 What is stress concentration in machine design?
- 12 What is the maximum stress concentration factor for a rectangular plate?
- 13 What is meant by stress concentration How do you take it into consideration in case of a component subjected to dynamic loading?
- 14 How is nominal stress calculated?
- 15 How do you calculate maximum stress?
- 16 How do you calculate nominal tensile stress?
- 17 How do you calculate stress in Young’s modulus?
- 18 How do you calculate stress in a hole in the plate?
- 19 Information related to the topic how to find stress concentration factor in ansys

## What is stress concentration in Ansys?

Keywords: Stress Concentration Factor, FEA, ANSYS, Shoulder Fillet. 1. Introduction. A stress concentration (often called stress raisers) is **a location in an object where stress is**. **concentrated**.

## How do you measure stress concentration factor?

Concentration Factor for Cracks:

A stress concentration factor is **the ratio of the highest stress (s _{max})) to a reference stress (s) of the gross cross-section**. As the radius of curvature approaches zero, the maximum stress approaches infinity.

### Ansys structural analysis tutorial – Calculating stress concentration factor

## What is stress concentration factor?

A stress concentration factor (Kt) is **a dimensionless factor that is used to quantify how concentrated the stress is in a mechanical part**. It is defined as the ratio of the highest stress in the part compared to a reference stress.

## What is stress concentration factor and stress intensity factor?

Stress concentration factor is dependent on the geometrical changes of cross section, such as a hole, notch or fillet in the component. This can be designed for as it only depends on the geometry and not on load condition. Stress intensity factor is dependent on geometry and load.

## What is nominal stress?

**Stress calculated on the basis of the net cross section of a specimen without taking into account the effect of geometric discontinuities such as holes, grooves, fillets, etc**.

## What is the stress formula?

**stress = (elastic modulus) × strain**.

## What is stress concentration explain with example?

**Geometric discontinuities cause an object to experience a localised increase in stress**. Examples of shapes that cause stress concentrations are sharp internal corners, holes, and sudden changes in the cross-sectional area of the object as well as unintentional damage such as nicks, scratches and cracks.

## What is stress concentration give different methods to reduce stress concentration?

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 factor 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.

### Stress concentration factor

## Where do stress concentration occur?

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 stress concentration in machine design?

This **localization of high stresses due to geometrical irregularities or abrupt changes of the cross-section** is called ‘stress concentration’ and the discontinuities are called stress raisers. Stress concentrations can also arise from some irregularity.

## What is the maximum stress concentration factor for a rectangular plate?

It has been observed from Figure 6 that maximum von mises stress for a central hole in a rectangular plate for r/b=1/4 is **106 MPa**.

## What is meant by stress concentration How do you take it into consideration in case of a component subjected to dynamic loading?

Stress concentration **occurs at the junction of two different diameters or around discontinuities like holes At these places the stress value increases more than the average values**. It is more pronounced in dynamic loading.

## How is nominal stress calculated?

The maximum nominal stress is reached at **ϵ = ϵ***, which is determined by the condition dσ/dϵ = 0.

## How do you calculate maximum stress?

**Divide the the applied load by the cross-sectional area** to calculate the maximum tensile stress. For example, a member with a cross-sectional area of 2 in sq and an applied load of 1000 pounds has a maximum tensile stress of 500 pounds per square inch (psi).

## How do you calculate nominal tensile stress?

A similar approach is followed for the calculation of the tensile stress area: **A _{t} = 0.7854 * [d – (0.9743 / n)]^{2}**, where d is given in inches, and n is given in threads/inch. Reference: Machinery’s Handbook published by Industrial Press .

### Stress analysis of plate with hole using ANSYS APDL to calculate stress concentration Factor.

## How do you calculate stress in Young’s modulus?

Sometimes referred to as the modulus of elasticity, Young’s modulus is equal to the longitudinal stress divided by the strain. Stress and strain may be described as follows in the case of a metal bar under tension. **Young’s modulus = stress/strain = (FL _{})/A(L_{n} − L_{})**.

## How do you calculate stress in a hole in the plate?

- σmax=(2.115)⋅(0.56)=1.1844 σ max = ( 2.115 ) ⋅ ( 0.56 ) = 1.1844 Mpa.
- for case -2:
- As we know we have three holes in the plate out of which the major hole has the same diameter as case-1. …
- hence, stress concentration value for the 30mm diameter holes having D/W ratio is 0.25.

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