The main aim of this thesis is to analyze the creep behavior of different ship structures and simulate the results for various loads, temperatures and time. To do so, we used ABAQUS CAE as we had some working experience of the software. First, we had to learn the procedure of analyzing creep behavior in ABAQUS CAE. So, we took a sample provided by our supervisor to get used to with the procedure. Then we tried to find out and show the properties and steps used in the example so that one can use the procedure for other purposes. Before applying the procedure on ship structures we needed to check the results found from simulation with an experimental data. We took a set of creep test data from a steel producing company. It shows that under a constant temperature if a material of known properties is applied a constant load for a long period of time a certain percentage of creep will occur. This information was tested for simple rectangular bar. Then the procedure was applied to ship structures like propeller , T- joint. Thus it would possible to analyze creep behavior of any structure used ship and even in other engineering fields.
Our first job was to develop a model of the intersection of a pipe with a cylindrical pressure vessel and observe the properties of the model while the system operates at elevated temperature and carries internal pressure.
The calculation consists of two steps-
- In the first step a static analysis is performed, during which the internal pressure is applied.
- In the second step a quasi-static transient analysis is carried out to determine the creep behavior of the pressurized vessel and pipe.
AL-ARAFAT'S BLOG 