Project Methodology

Product design

All the methods and simulation process work are explained to gain the objectives of this project. The objectives of this project are purpose to simulation of polypropylene distribution with different dimension of parison via ANSYS software. Extrusion blow moulding is selected as the processing for this project. The methods are basically refers to the design of project methodology and procedure. The process flows of the overall project are illustrates in Figure 3.1. In here, the first stage to start this project is searching the literature review that will relate for this project. The expected result from the literature review searching can be approving that the data and knowledge given is very taught to ensure it is correct. Sketch and model preparation of the extrusion and 2D blow mould using ANSYS software to show the roles model of product that will analyse. Design the different diameter of parison which are 8, 10, 18, and 20mm to show the effect of the thickness distribution on the wall. The designing mention that it will design the test part which is bottle that are blow mould and parison part. The entire dimension must be accurate and comfortable for the product.In simulation work is divided into five stages process simulation setup. Mould and parison is the main part that being to design in first stage. The process design and simulation of this project are based on flow chart as shown in Figure 3.2. Sketch the mould and parison in the geometry stages which are design the parison with 8, 10, 18, 20mm in different diameter. The second stage which is the meshing stage where it uses internal data structures to assign an order to the elements, faces, and mesh points in a mesh and to maintain contact between adjustments. In the third stage, where the setup Polyflow data is property setting. Define mould, material data which is viscosity, density, and gravity will measure at the setup. Numerical parameter also will set all the data which are the initial time value, upper time limit, initial value of time step, min and max value of time-step and tolerance. In this project thickness and time step are the main analysed that it want to control and see the product occur when the blowing process begin. All the test is can be control by using software which is using ANSYS software. In this process, we list all control variables and measurable that will involve. Measureable variable can also categorize as dependent variables and control variable is also known independent variables. The constant mould being used and different diameter of parison are the independent variables and the material properties which are density and viscosity are dependent variable. The next stage, after analyse blow behaviour it can see the effect when the blow moulding process begin. The problems deal with the cavity filling stage of the moulding process and it is assumed that a preform has been positioned inside the mould. The contact between the fixed mould and the preform is considered. A contact pressure which is from the journal applied to the preform which enters the mould and eventually takes its shape. Data collection and verification is done when the simulation process because in the solution process, the post processing setting, selecting of colour and variables was set at early before simulation. At the last stage which is the result stage. The thickness will set as thickness, set the measurement line and generate the graft before analyse the data which different parison. On the simulation the thickness and the stress profiles in the bottle will be analysed. Result analysis may show all the effect of parameter as mention. Lastly, write the conclusion from overall project and documentation process is done. 

Sketching mould and parison in gemometry stage

Meshing in size 0.001m

Final simulation view on 10mm diameter parison

Final Presentation FYP 1

                                           

        Muka sebelum presentation PSM..ready..and go..!

02 December 2013 is my presentation date with my panel Dr. Amir Azizi and my supervisor Miss Suraya Sulaiman. Alhamdulillah, everything is good but have more correction to do do especially at chapter 3. Chapter 3 is most taught chapter which are to predict the result and all data must include on this chapter. so see for FYP 2 soon.. :-)