ANALYSIS OF PLATE WITH HOLE

ANALYSIS OF PLATE WITH HOLE

AIM – To compare stress, strain and displacement in same loading conditions on two plates with holes of given dimensions.

OBJECTIVES-

1. Create two plates of two plates with holes of given dimensions.
2. Run static analysis for both of them.
3. Compare the results.

INTRODUCTION-

Tensile testing, also known as tension testing, is a fundamental materials science and engineering test in which a sample is subjected to a controlled tension until failure. Properties that are directly measured via a tensile test are ultimate tensile strength, breaking strength, maximum elongation and reduction in area. From these measurements the following properties can also be determined: Young's modulus, Poisson's ratio, yield strength, and strain-hardening characteristics.

Tensile testing might have a variety of purposes, such as:

• Select a material or item for an application.
• Predict how a material will perform in use: normal and extreme forces.
• Determine if, or verify that, the requirements of a specification, regulation, or contract are met.
• Decide if a new development program is on track.
• Demonstrate proof of concept.
• Demonstrate the utility of a proposed patent.
• Provide standard data for other scientific, engineering, and quality assurance functions.
• Provide a basis for technical communication.
• Provide a technical means of comparison of several options.
• Provide evidence in legal proceedings.

For stress around a hole at centre of infinite plate we have following correlation:

PROCEDURE-

1. Create 3d models of plates with help of dimensions provided

PLATE1:

Length = 300mm
Height = 120mm
Thickness = 30mm
Circular Hole at the centre: Diameter=60mm

PLATE2:

Length = 300mm
Height = 120mm
Thickness = 30mm
Circular Hole at the centre: Diameter=60mm

Two holes of 30 mm diameter which are placed 90mm away from the central hole on both sides.

2. Click on Simulation tab. Select Linear>static. Apply material alloy steel to plate.
3. Select Fixed geometry of one of the smaller end faces of each plate.
4. Apply a load of 1000N on the other smaller side face.
5. Click on mesh and set parameter to 6mm to generate fine mesh.
6. Click on run.
7. Compare the results.

RESULTS -

PLATE1:

PLATE2:

CONCLUSIONS & EXPLANATIONS-

1. Comparing stress values in each case we can see that more stress is developed in plate 1 when compared to plate 2 which has two more holes.
2. Comparing displacement values we can see that less displacement is observed in plate1 while more displacement is observed in plate 2 which has less mass.
3. Comparing strain values in each case we can see that more strain is developed in plate 1 when compared to plate 2.
4. Clearly the stress concentration has maximum value near holes. Clearly plate 2 has more number of holes, less mass. Hence, the stress develops is distributed among the holes.