Deformation Control Method of Large Structural Parts Based on Stress Mapping Mechanism
In order to overcome the difficulty in controlling the deformation of large structural parts beyond capability of traditional method,a deformation control method based on stress mapping is proposed.The initial residual stress in blank is measured and its deformation formula under the condition of initial residual stress is derived.The initial configuration and part configuration are defined,and the stress mapping model aiming at the minimum deformation of part configuration is established with the initial configuration as the variable.The mapping model is solved and the initial configuration of typical structural parts is optimized.The model is verified by simulation and experiment with the results showing that the method can effectively reduce the deformation of structural parts.
machining deformationresidual stressstress mappingdeformation control
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