大型舱段校正机构设计与仿真分析

Design and simulation analysis of the deformation-correction mechanism for large cabin sections

大型舱段在卧式对接状态下,受自身载荷作用会发生圆度超差及变形量超差的问题,会使舱段在对接过程中出现协调困难。为了解决这些问题,提出了一种环形校正机构来校正端口的变形量及对接时的圆度。通过ANSYS Workbench软件对舱段端口的圆度超差进行有限元仿真分析,用来确定理想圆度下校形力的大小。同时针对变形量超差的问题,设计了多目标优化的模型来控制和优化校形时端口的变形量,并提供校形力的参考值。结果表明:通过对校形力的优化设计,该校正机构通过施加一定的校形力,能够满足对接面端口的变形量要求及圆度要求,对舱段对接的实现有着重要的意义。

When the large cabin sections are in the state of horizontal docking,such problems as roundness error and excessivedeformation caused by self-loading will result in the coordination-related difficulties in the docking process. In order tosolve these problems,the round deformation-correction mechanism is worked out to correct the deformation amount at the portand the roundness at the time of docking. By means of the ANSYS Workbench software,the finite-element simulation analysis isconducted on the roundness of the calibrated tooling, in order to identify the magnitude of the correcting force when the circularityis ideal. Besides,for excessive deformation,the multi-objective optimization model is worked out to control and optimize thedeformation amount at the port during the calibration, and renders the reference value of the correcting force. The results showthat benefiting from the optimized correcting force,the deformation-correction mechanism meets the requirements of both deformationamount at the port and roundness,which is of great significance for the realization of cabin docking.