Caesar II Tutorial

Chapter 1. Introduction

CAESAR II is PC based pipe stress analysis software. This software is an engineering tool used in the mechanical design and analysis of piping system. The methodology that is used by this software is modeling the pipe as a simple beam element.

Input: Loading condition that is imposed to the system.

Output: Displacement, load and stress that will be compare with code and standard

Application;
- Mechanical design of new piping system
- Determine the specification of piping supports
- Evaluation, trouble shooting and re-designs an existing piping system
- Piping system failure analysis
- Piping system dynamic (vibration) analysis

CAESAR II basic operation;

CAESAR II Quick Start;

CAESAR II Input Generation;

Simple input sample;

1. Enter value 10-0 (10 ft) in the DX field.
2. Enter value 8 (8” nominal) in the Diameter field. This is automatically converted to actual diameter.
3. Enter the letter “S” (Standard schedule pipe wall) in the Wt/Sch field. This is automatically converted to actual wall thickness.
4. Enter 600 (degree Fahrenheit) in the Temp 1 field.
5. Enter 150 (psig) in the Pressure 1 field.
6. Double click on the Bend checkbox. This adds a long bend radius with value 1.5D.
7. Double click on the Restraint checkbox. On the first Node field, enter 10; then select ANC (anchor) from the first TYPE drop list.
8. Select A106 B from the Material drop list. This selection fills in the material parameters such as density and modulus elasticity.
9. Double click on the Allowable stress check box and select the B31.3 code from the Code drop list.
10. Enter 0.85SG in the Fluid Density field. This value automatically converted to the density value.
11. To enter the second elements of the model press the Continue (or Alt-c) toolbar. New element from 20-30.
12. Enter the value 10-0 (10 feet) in the DY field.
13. Double click on the Restraint checkbox. On the first Node field, enter 30; then select ANC from the first TYPE drop list.

Exercise 1.1

A 5 in. pipe with 0.375 in. thickness has load F=200lbs in the end of the pipe and the other side is fixed. Calculate the axial stress. (Material A106 B)

Answer = 39.5 psi.

TO BE CONTINUED TO THE NEXT CHAPTER….

Chapter 2. Main Menu

Chapter 3. Piping input

Chapter 4. Error Checking, Load Case and Static Analysis

Chapter 5. Static Output Processor

Chapter 6. Bends

Chapter 7. Restraints

Chapter 8. Hangers

Chapter 9. Expansion joints

Chapter 10. Dynamic Input and Analysis

Chapter 11. Dynamic Output Processing

Chapter 12. Case Study