Finite Element Simulation Method for Vibration Analysis of Skin Panel Connection Structures Based on Contact Theory

ZHANG Yujie; LI Bin; SUN Renjun

doi:10.7643/issn.1672-9242.2026.09.008

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (9) : 74-81. DOI: 10.7643/issn.1672-9242.2026.09.008

Special Topic—Structural Dynamics of Aviation Equipment

Finite Element Simulation Method for Vibration Analysis of Skin Panel Connection Structures Based on Contact Theory

ZHANG Yujie^1,2, LI Bin^2,3, SUN Renjun^1,2,3

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Abstract

The work aims to study how to utilize finite element methods and element simulations to model the effects of bolted or riveted connection structures on the accuracy of vibration characteristic simulation results for the skin panels. The Greenwood-Williamson contact model was employed to derive a formula for calculating the actual contact area at the joint interfaces under the effect of connecting elements (rivets or bolts). A modeling method was proposed, involving multi-point constrained rigid connections for element nodes within the actual contact area and beam-element simulations for rivets or bolts. With a typical stiffened skin panel as the research object, the finite element model of the skin panel structure and connecting elements was established by the finite element software Hypermesh and Patran and its vibration mode was analyzed and experiments were conducted. A comparison was performed between the experimental results and simulation results for the first three natural frequencies of the skin panel. The maximum relative error between the two sets of results was less than 2%, which showed the effectiveness of the proposed finite element simulation method. This method can provide valuable references for finite element modeling in vibration analysis of aircraft structures with other bolted or riveted connection forms.

Key words

skin panel / connecting element / contact theory / finite element model / vibration mode

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ZHANG Yujie, LI Bin, SUN Renjun. Finite Element Simulation Method for Vibration Analysis of Skin Panel Connection Structures Based on Contact Theory[J]. Equipment Environmental Engineering. 2026, 23(9): 74-81 https://doi.org/10.7643/issn.1672-9242.2026.09.008

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