Mitsubishi Heavy Industries Technical Review
    Vol. 53 No. 4 (2016)   New Products & Technologies
    Technical Papers

    Design Technique for Mechanism Analysis Using Nonlinear Response Surface by Applying High-speed, High-precision Optimisation Method

    Rohit Arora,
    Kengo Imaoka,
    Kensuke Hutahashi

    Mechanism analysis is an effective tool for evaluating the feasibility of complex mechanisms, but in order to find the worst conditions (singular solution) which cause problems such as wearing, there is a need for parameter combination analysis of huge volumes, causing the cost for calculation and time required for analysis to increase exponentially. This paper explores the usage of Efficient Global Optimisation (EGO) which uses Kriging (Gaussian) response surface technique and couples it with mechanism analysis software allowing to reduce the total runs needed while handling intractable design space which leads to simulation failure. This technique is used for improving the design of steam turbine valve which regularly suffers from surface wear.