Finite Element Modelling of Contact Interaction between Spherical Indenter and Elastic-Plastic Body

Shimanovsky, Alexandr; Abdulkader, Mohammed H.; Kuzniatsova, Maryna

doi:10.4028/www.scientific.net/amm.797.307

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…The boundary condition of FEA for the rubber ring is classified into two stage by installation mode and working mode. In order to study the deformation-stress of the rubber ring caused by boundary condition of assemble status, three kind of installation modes are assigned according to the Reference [30]. As schematic Figure 4 shown, piston rod axial displacement (RA), piston rod lateral displacement (RL), and groove lateral displacement (GL) are taken into account [15].…”

Section: Installation Modementioning

confidence: 99%

A Novel Structure of Rubber Ring for Hydraulic Buffer Seal Based on Numerical Simulation

Lin

Wei

2021

Applied Sciences

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Landing gear is a key load-bearing structure of aircraft during ground operation, and the landing capacity of landing gear is determined by the performance of buffer. To solve the problem of buffer failure caused by insufficient static sealing of a rubber ring at groove side, a new structure of a butterfly rubber ring is proposed by analyzing the factors affecting sealing performance of the rubber ring. First, the constitutive equation of rubber material is derived based on the theory of hyper-elasticity, and the material parameters are obtained by fitting the experimental data. Then, by analyzing the simulation method of installation mode and installation stroke, the simulation method suitable for calculating the sealing performance of the rubber ring is established. The linear fitting formulas with Pearson coefficient greater than 0.92 are used to discuss the influence of pre-compression rate and hydraulic pressure on the sealing performance of the rubber ring. Compared with O-ring, the contact pressure of butterfly-ring is increased by 30% in assembly state and 14% in working state. The results show that the butterfly rubber ring has excellent static sealing performance. It is concluded that improving the configuration of the sealing ring can solve the insufficient unilateral sealing of the hydraulic buffer.

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Section: Installation Modementioning

confidence: 99%

A Novel Structure of Rubber Ring for Hydraulic Buffer Seal Based on Numerical Simulation

Lin

Wei

2021

Applied Sciences

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Simulation of dynamic contact during shot blasting of parts

Barsukov

Lezhava

Ilkevich

2022

jour

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Shot blasting consists in hardening of the parts surface layer or workpieces with a stream of solid particles, mainly in the form of hardened steel balls. The purpose of the work is to develop and test a method for calculating the parameters of an elastic-plastic dynamic contact during shot blasting of parts based on mathematical modeling. The research technique is based on the consideration of a three-stage model of workpiece deformation under elastic-plastic impact by a steel spherical indenter. At the initial stage, the deformation is carried out elastically. Then, under some dynamic load, in the near-surface layer of the impacted body, a region of plastic state is generated, surrounded by an elastically deformable material. With a further increase in the dynamic load above a certain characteristic value, the region of the plastic state comes to the surface of the impacted part. Subsequently, the process is characterized by elastic-plastic indentation of the indenter (shot) into the impacted part. A method for upper calculating estimate the parameters of the dynamic contact of steel shot with parts based on the energy theory of elastic-plastic impact has been developed. To separate the elastic and plastic components of the deformation energy, the velocity recovery factor upon impact was used. The deformable material is accepted at the final stage of deformation as an ideal elastic – plastic material obeying the Prandtl’s scheme. Analytical dependencies convenient for practical use are obtained, which allow one to make calculating estimate of the depth and diameter of the imprint. Estimated calculations of the depth of the indentation depending on the speed of exposure to steel shot for shot blasting of a number of structural carbon steels have been performed. The results of the research can be used in the educational process in the preparation of engineering personnel of the machine-building profile, as well as in engineering practice.

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Finite Element Modelling of Contact Interaction between Spherical Indenter and Elastic-Plastic Body

Cited by 2 publications

References 8 publications

A Novel Structure of Rubber Ring for Hydraulic Buffer Seal Based on Numerical Simulation

A Novel Structure of Rubber Ring for Hydraulic Buffer Seal Based on Numerical Simulation

Simulation of dynamic contact during shot blasting of parts

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