Material Properties for Reliability Improvement in the FEA Results for Rubber Parts

Abstract

We studied the material properties for reliability improvement in finite element analysis results for a nitrile butadiene rubber hub-bearing seal and for a carbon-filled rubber mount used in a vehicle. It was difficult to measure the material properties of hundreds of types of rubber for the mount design. Thus, we suggested that the engineering stressstrain relations from pure shear test data could be synthesized by using simple tension data and Poisson's ratio. We defined Poisson's ratio by using a function of principal stretches to synthesize the stress-strain relations for a pure shear test. A transformation of the pure shear data was applied to the experimental values to obtain the predicted results when the strain approaches 100%. In the finite element analysis for the contact force of a hub-bearing seal, the strain results that used the transformation of the pure shear data and simple tension data almost corresponded to the experimental values. Ogden constants were used to analyze.

Nonlinear Stress Analysis of Dust Covers for Ball Joint of Automotive Steering System

“…It is confirmed that the sealing capability of both types is fairly good, but the wrinkle type is better than the pot type in terms of the maximum stress. (8,9) 이러한 고 무의 특성을 잘 묘사하기 위해 고무의 인장시험 을 수행하였으며 그 결과로부터 과 같이 Table 1 함수 Ogden (9,10) 를 이용한 고무의 물성치를 구하 여 해석을 수행하였다. (7) 의 기능을 이용하여 단계의 축대 1 칭 해석 결과를 원주방향으로 확장하여 구 180°성 하였다.…”