784 – ANSYS STRESS .

Assignment Execution Instructions Stress Analysis (MECH0018.1)

Student Name: BASHAR ISSA SALIM ABDULLAH AL AGHBARI

You are required to complete the full lab portfolio assignment using ANSYS Mechanical APDL R1 2026. The work must be accurate, complete, and professionally presented, including all required simulation files.

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## General Requirements

– Use ANSYS Mechanical APDL 2026 R1 only

– Provide step-by-step modeling with clear screenshots

– All results must be explained and justified

– Submit a complete Word report

– Include all ANSYS software files

– Use consistent units (mm, N, MPa)

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## Task 1: Stress Concentration Analysis

### Student Data:

– A = 135 mm

– B = 115 mm

– C = 85 mm

– D = 75 mm

– E = 85 mm

– F = 42 mm

### Model Setup:

– Plate with hole (as per assignment figure)

– Load = 70 kN (tensile)

– Thickness = 15 mm

– Material:

– E = 210 10 N/mm

– = 0.29

– Element Type: PLANE183

– Plane stress with thickness

### Required Work:

A. Define and explain PLANE183 element

B. Compute deformation:

– With hole

– Without hole

Provide comparison with figures

C. Mesh Sensitivity Analysis:

– Coarse mesh

– Medium mesh

– Fine mesh

Select optimum mesh and justify

D. Determine maximum stress at:

– Section 1

– Section 2

– Section 3

E. Calculate Stress Concentration Factor (Kt)

F. Thickness Study:

Repeat analysis for:

– 20 mm

– 25 mm

– 30 mm

Compare results

G. Fillet Analysis:

Add fillet and compare stress with and without fillet

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## Task 2: Buckling Analysis

### Student Data:

– L1 = 130 mm

– L2 = 110 mm

– Force = 14 kN

– I-Beam = W200 22

– Number of Modes = 6

### Model Setup:

– Element Type: BEAM188

– Material:

– EX = 210e6

– PRXY = 0.27

– Density = 7.8e-9

– Number of elements per line = 30

### Required Work:

– Perform buckling analysis

– Extract 6 modes

### Results:

For each mode:

– Deformation at points a, b, c

– In directions X, Y, Z

– Fill the required table completely

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## Task 3: Fracture Mechanics Analysis

### Student Data:

– Crack length (a) = 0.015 m

– Plate width (b) = 0.15 m

– Applied stress = 115 MPa

### Model Setup:

– Material:

– E = 180 GPa

– = 0.3

– Use PLANE183 and quarter-point crack-tip elements (PLANE82)

### Required Work:

A. Stress Intensity Factor (SIF)

1. Analytical solution

2. ANSYS solution

3. Compare results

4. Calculate percentage error

B. Crack Length Study

Increase crack length three times:

– 0.025 m

– 0.035 m

– 0.045 m

Provide table and discussion

C. Stress vs SIF

– Use stress values from 120 MPa to 240 MPa (increment 20 MPa)

– Plot SIF vs stress

– Determine maximum allowable stress using KIC = 23

– Repeat for semi-circular crack

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## Required ANSYS Files

You must submit all software files:

For each task:

– .db

– .rst

– .log

– .inp or APDL command files

– Any macros used

Folder structure:

– Task1_Bashar

– Task2_Bashar

– Task3_Bashar

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## Report Structure

The report must include:

1. Title Page

2. Table of Contents

3. Introduction

4. Methodology with screenshots

5. Results (tables and figures)

6. Discussion

7. Conclusion

8. References (APA style)

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## Important Notes

– All work must be original

– No copy-paste

– Every step must be documented

– Results must be logically explained

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## Final Deliverables

1. Complete Word report

2. All ANSYS APDL files

3. Screenshots of modeling steps and results

4. Graphs and tables

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Complete all tasks with high accuracy and professional presentation.