Exploring reliability and precision in mould optimization design of aero-engine turbine blade

Having failed to find any information in the open literature about achieving reliability and precision in mould optimization design, we have to explore studying and developing such technical know-how in China ourselves. We present what we believe to be a promising method, the fruit of our painstaking exploration. In the full paper, we explain our promising method in detail. In this abstract, we give only the topics we discuss in the full paper; (1) the process of transforming the CAD model into CAE model; (2) Calculation of displacement field of mould and the simulation of deformation; (3) Compensation for unavoidable deviation from design shape of mould. We performed simulations, which examined, after each iteration, the effectiveness of our compensation, as measured by the deviations in X, Y and Z directions from design shape that still remained. For a certain aero-engine turbine blade, the deviations after the first iteration were 0.194366, 0.054674 and 0.453754, the sum being 0.515815. The deviations after the second iteration were 0.001802, 0.002627 and 0.002917, the sum being 0.004667. The deviations after the third iteration were 0.001249, 0.001771 and 0.001035, the sum being 0.002557. It can be seen that our method converges very quickly and looks promising. The actual application of our method to casting aero-engine turbine blade remains to be done.