Development of Headform Impactor Finite Element Model Considering the Hyperelastic and Viscoelastic Responses of Rubber

Lee, Choong-Ryung; Jeong, Hyun-Yong

doi:10.1007/s12239-018-0050-z

Cited by 5 publications

(1 citation statement)

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“…Specific parameters are illustrated in the Appendices A-C. The contact pair, which is adopted to simulate the contact nonlinear behavior [24][25][26], is defined at the squeeze area during the installation mode and working mode, as shown in Figure 3. And the element type of TARGE169 and CONTA171 are adopted to simulate the contact behavior.…”

Section: Finite Element Modelmentioning

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: Finite Element Modelmentioning

confidence: 99%