A new method of micro-slip contact normal pressure modeling and its application in the dynamic analysis of the dovetail–tenon–mortise jointed blades

Chen, Zilin; Li, Chaofeng; Yang, Zhenya; She, Houxin

doi:10.1080/15397734.2022.2036616

Cited by 5 publications

(1 citation statement)

References 30 publications

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“…Considering the local contact characteristics, the dynamic equation of the dovetail tenon blade was established. Chen et al [8] established the contact slip mechanical model considering the distribution characteristics of contact pressure and applied it to the dovetail tenon root. Te dynamic equation of the blade was obtained by the fnite element method.…”

Section: Introductionmentioning

confidence: 99%

Influence of Fir-Tree Tenon Blade Parameters on Blade Dynamic Characteristics

Yang

2023

Shock and Vibration

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In this paper, based on the theory of elastic structure analysis, considering the rotational softening and centrifugal stiffening of the blade, the dynamic model of the fir-tree rotating blade and the macroslip hysteresis model of the dry friction on the contact surface of fir-tree tenon are established. Based on elastic mechanics, the pressure distribution model of fir-tree tenon is innovatively established and the relationship between fit clearance and contact pressure has been derived. After the blade is discretized by the finite element method, the dynamic equation of the blade is solved iteratively by the Newmark-β numerical integration method. According to the dynamic equation of the blade, the influence of the change of the tenon angle on the forced response and contact stress of the blade is derived. Finally, some novel conclusions are obtained by analyzing the influence of pressure distribution, tenon angle, friction coefficient, rotational speed, and aerodynamic excitation on blade vibration characteristics. It provides a scheme and relevant basis for the design and development of tenon blades with the most damping effect at different speeds in industrial practice.

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Section: Introductionmentioning

confidence: 99%