Scholarlink

<p>This work presents a new universal mathematical calculation model of connected members based on real deformation of bolted joints. For this model, a finite element simulation analysis of stiffness was carried out of connected members based on multiple size parameters of the three-dimensional entity model of bolted joint. Moreover, deformation of bolt hole edges with bolt head (nut) which influences stiffness sensitivity greatly was used as the reference; a new universal mathematical calculation model of bolted connected members was constructed based on Levenberg-Marquardt optimization algorithm. Subsequently, a finite element simulation verification of the proposed new model was conducted. The absolute error was about 4 % and the maximum absolute error was 5.66 %; experimental verification was also conducted on the proposed model.</p>

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Establishment and experimental verification of a theoretical model for axial nonlinear stiffness of bolt connected members

  • 期刊论文

  • 发表日期：

    2025年4月3日

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  • Shikun Lu

摘要

This work presents a new universal mathematical calculation model of connected members based on real deformation of bolted joints. For this model, a finite element simulation analysis of stiffness was carried out of connected members based on multiple size parameters of the three-dimensional entity model of bolted joint. Moreover, deformation of bolt hole edges with bolt head (nut) which influences stiffness sensitivity greatly was used as the reference; a new universal mathematical calculation model of bolted connected members was constructed based on Levenberg-Marquardt optimization algorithm. Subsequently, a finite element simulation verification of the proposed new model was conducted. The absolute error was about 4 % and the maximum absolute error was 5.66 %; experimental verification was also conducted on the proposed model.