Condensation modeling of the bolted joint structure with the effect of nonlinear dynamics

In this paper, an order-reduction modeling method is proposed to capture the dynamic performance of a bolted joint structure. The model contains the influences of nonlinear contact force, damping and geometrical characteristics of connecting interface. The equations of motion of a bolted joint struc...

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Veröffentlicht in:Journal of sound and vibration Jg. 442; S. 657 - 676
Hauptverfasser: Lingfei, Kong, Heling, Jiang, Ghasemi, Amir H., Yan, Li
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Amsterdam Elsevier Ltd 03.03.2019
Elsevier Science Ltd
Schlagworte:
Bolted joint structure
Bolted joints
Condensation
Condensation method
Contact force
Coordinate transformations
Damping
Effectiveness
Effects
Equations of motion
Experiments
Geometry
Hybrid coordinate reduction
Mathematical analysis
Matrix methods
Nonlinear dynamic
Nonlinear dynamics
Nonlinear equations
Reduction
Condensation method
Hybrid coordinate reduction
Bolted joint structure
Nonlinear dynamic
ISSN:0022-460X, 1095-8568
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Zusammenfassung:In this paper, an order-reduction modeling method is proposed to capture the dynamic performance of a bolted joint structure. The model contains the influences of nonlinear contact force, damping and geometrical characteristics of connecting interface. The equations of motion of a bolted joint structure are divided into the linear characteristics and the nonlinear characteristics based on desired locations information. A new hybrid coordinate reduction (HCR) technique is introduced where the nonlinear characteristics within connecting interface are retained into the physical space while other linear modes are truncated. However, the error caused by truncating higher-order linear modes is compensated using a residual flexible matrix. The connecting interface of the bolted joint structure is condensed to a visual point via the coordinate transformation. The main advantage of this method is the reduced computational cost for solving the nonlinear dynamic equations. A series of experimental tests are performed to demonstrate the effectiveness of the proposed method. It is shown that the proposed method provides a more realistic tool for capturing the nonlinear dynamics and performance of a complex joint structure.
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ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2018.10.053