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research-article

Compliant assembly variation analysis of scalloped segment plates with a new irregular quadrilateral plate element Via ANCF

[+] Author and Article Information
Haidong Yu

Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures, Shanghai Jiao Tong University, Shanghai, 200240, China
hdyu@sjtu.edu.cn

Chunzhang Zhao

Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures, Shanghai Jiao Tong University, Shanghai, 200240, China
zhaochunzhang@163.com

Xinmin Lai

State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai, 200240, China
xmlai@sjtu.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4040323 History: Received October 12, 2017; Revised May 13, 2018

Abstract

The accurate calculation of deformation during assembly process is important for deviation propagation of large scale thin-walled hemisphere structures with manufacturing deviations due to the non-uniformed material properties and nonlinear geometrical behavior. In this study, a new irregular quadrilateral plate element based on the absolute nodal coordinate formulation (ANCF) is proposed to discretize the scal-loped segment plates with shape deviations. The high-order shape functions of the new element are de-veloped by considering the variable geometrical boundaries. The generalized elastic forces of the new elements for anisotropic and orthotropic materials are derived based on continuum mechanics approach. The bending deviation mode is defined and the evaluation indexes for assembly quality of thin-walled hemisphere structures are proposed. The force equilibrium equations are employed to study the defor-mation during assembly process for large scale thin-walled hemisphere structures with multiple scalloped segment plates. The numerical results are compared with that from experimental data and ABAQUS. The correlation between the assembly quality and the bending deviation, the clamping methods, the geo-metrical parameters and the material properties of structures is also investigated.

Copyright (c) 2018 by ASME
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