CAJ | 학술논문

基于已获取的橡胶材料实验数据及常用于工程计算的超弹性本构模型，首先探讨了车用橡胶悬置静态刚度的有限元计算与分析方法，进而以一汽车动力总成橡胶悬置为研究对象，分析了橡胶材料应变组合对橡胶悬置静态刚度计算的影响，最后研究了Mooney-Rivlin（ MR）模型、Yeoh模型及三阶Ogden模型计算橡胶悬置刚度的适用范围。研究结果表明，较小应变状况下（最大应变小于0．3时），当橡胶材料的应变水平与橡胶悬置实际测试方向应变水平一致或相对接近时，三种模型的计算值与实测值均具有较好的一致性；在中等应变载荷下三种模型的预测精度均较高（最大应变介于0．5～1），在较大变形情况下（最大应变大于1）三阶Ogden模型具有相对较为稳定的预测精度；相近应变形式的橡胶材料应变组合更有利于提高元件静态刚度的计算精度。
기우이획취적상효재료실험수거급상용우공정계산적초탄성본구모형，수선탐토료차용상효현치정태강도적유한원계산여분석방법，진이이일기차동력총성상효현치위연구대상，분석료상효재료응변조합대상효현치정태강도계산적영향，최후연구료Mooney-Rivlin（ MR）모형、Yeoh모형급삼계Ogden모형계산상효현치강도적괄용범위。연구결과표명，교소응변상황하（최대응변소우0．3시），당상효재료적응변수평여상효현치실제측시방향응변수평일치혹상대접근시，삼충모형적계산치여실측치균구유교호적일치성；재중등응변재하하삼충모형적예측정도균교고（최대응변개우0．5～1），재교대변형정황하（최대응변대우1）삼계Ogden모형구유상대교위은정적예측정도；상근응변형식적상효재료응변조합경유리우제고원건정태강도적계산정도。
Firstly, base on rubber material experimental data previously acquired and super-elastic constitutive model commonly used in engineering calculations , the rubber mount ’ s finite element analysis and calculation method of static stiffness are investi-gated.Furthermore, a rubber power train mount was chosen as the research object and its calculation results of static stiffness which is how to affect by rubber material strain combinations is analysed .Finally, the application scope of Mooney-Rivlin ( MR) model , Yoeh model and the third-order Ogden model is studied in rubber mount stiffness calculations .The results show that cal-culated and measured values of the three models are in good agreement under small strain load ( the maximum strain is less than 0.3) and identical strain condition is close to the strain of the rubber mount .Prediction accuracy of the three models are higher with medium strain condition (maximum strain is between 0.5 and 1).The third-order Ogden model is shown superiority under the large strain condition (maximum strain is larger than 1).Rubber material strain combination with similar strain form is more conducive to raising rubber mount ’ s static stiffness calculation accuracy .