Injection Moulding CAE Technology (1) The history of CAE

Plastic products from product design to production, including moulding plastic products design, mould design, mould manufacturing and injection molding process parameters and several other main areas. The traditional injection mould design mainly reply on the designers’ experiences, while the injection molding process is very complex, plastic melt flow properties of different and ever-changing products and die structure process conditions vary, forming various defects, mould design often require repeated trial-mode, maintenance mold can be put into production, whit little of a successful, identify problems, not only to re-adjust the process parameters, or even to modify the plastic products moulds, not only time-consuming and laborious, but also reduces product development time. The use of injection moulding CAE technology in mould manufacturing prior to simulate injection moulding process( including filling, packing and cooling) and the early detection of problems, optimize mould design and process conditions set to reduce the number of test mould in order to improve production efficiency, has become a injection moulding technology is an important direction of development.

Injection Moulding CAE technology is based on plastic processing theology and heat transfer of the basic theory, the melt in the mould cavity in the flow, heat transfer physics, mathematical model, using numerical solution method of constructing the theory, the use of computer visualization technology image, visually simulate the dynamics of the actual shape of the melt filling the cooling process, and analysis techniques.

The 20^th century, 60 years, the UK and the USA and Canada and any other countries of the scholar, such as J R Pearson(UK), J F Stevenson(USA), M R Kamal(Canada) and K K Kwang (USA) and etc. to carry out a series of plastic melt in the mould-type cavity flow and cooling of basic research. At a reasonable simplification, based on 60 years completed a one-dimensional flow and cooling analysis programs, 70 years to complete the two-dimensional cooling analysis programs, and 80 years from the injection moulding CAE technology has begun to theoretical research into the practical phase, launched a there-dimensional flow and cooling analysis and the study extended to packing , fiber orientation and warpage prediction of molecular and other fields. After 90 years carried out into the flow packing, cooling and  stress analysis, the whole process of injection moulding processes are integrated research.