Investigation on the Clamping Rods Layout Method for WaxPattern of Gas Turbine Blade

Abstract

Wall thickness monitoring of wax pattern of gas turbine blade could be solved by using clamping rods layout optimization method. First, the load curves of ceramic core are obtained based on the simulation results of wax injection process. Then, the ceramic core shifting computing model with incompletely constrained of clamping rods is established based on computational mechanics theory. The influence of shifting on wax pattern wall thickness is analyzed. Further, a clamping rods layout optimization model is established based on the mapping model between core shifting and clamping rods location to compute core shifting. Finally, an improved genetic algorithm is proposed to optimize the layout scheme for clamping rods. The experimental results indicates that the proposed method can monitor the shifting of ceramic core and decrease the wall thickness error.

Keywords

• gas turbine blade
• wax pattern
• clamping rod
• layout optimization