Assembly Deviation Analysis of Aircraft Thin-walled Parts under Flexible Assembly Mode
Aiming at the assembly characteristics of aircraft thin-walled parts under flexible assembly mode,this paper proposes a model of aircraft thin-walled parts assembly deviation based on flexible assembly,taking into account the manufacturing deviation of thin-walled parts,the positioning deviation of flexible tooling and the deformation error of flexible parts under the action of assembly force.Firstly,combined with the positioning deviation of flexible tooling,the rigid deviation caused by rotation and translation of thin-walled parts is analyzed by deterministic positioning method,and the flexible deformation caused by clamping and riveting assembly of thin-walled parts is analyzed by using the influence coefficient method and superelement stiffness matrix theory.Secondly,an assembly deviation model is established for the deviation transfer law of thin-walled parts,and the normal deviation of key characteristic points on thin-walled parts can be obtained by using MATLAB,and the final deviation of the assembly is effectively predicted.Finally,the case verification of a certain type of aircraft thin-walled parts is carried out,and the assembly process of thin-walled parts is simulated with the help of finite element analysis software ABAQUS.By comparing the calculation results and simulation results of the assembly deviation of key measurement points,the feasibility of the assembly deviation model of aircraft thin-walled parts proposed in this paper is verified.
万方数据
维普
