【作者】 王坚毅；

【导师】 赵树高；

【作者基本信息】 青岛科技大学 ， 材料加工工程， 2006， 硕士

【摘要】 本研究以185／70R14C半钢子午线轮胎为例，根据轮胎的实际结构，借助MSC.MARC非线性有限元分析软件，充分考虑轮胎的几何非线性、橡胶本构关系的非线性、帘线-橡胶材料的各向异性以及接触非线性边界条件等因素，建立了轴对称和三维非线性有限元分析模型。 根据轮胎的实际使用过程，首先模拟了轮胎与轮辋接触的装配过程，并分析了自由充气过程。据此预测了轮胎充气后的构形，得到了充气断面宽B’和充气断面直径D’，并分析了轮胎中各部位的受力状况。 模拟了轮胎垂直负荷下和在标准气压下的静态接地过程，并在此基础上模拟了轮胎稳态滚动过程，得出了轮胎静态接地和稳态滚动下，轮胎带束层和胎体层的受力情况。 在轮胎三维有限元分析的基础上，通过改变轮胎的侧偏角，研究了轮胎侧偏特性，得出了侧向力和回正力矩随着侧偏角变化而呈现的变化规律，计算结果与实际的变化趋势相符合。 模拟了轮胎在稳态滚动的情况下，轮胎与转鼓曲面之间的相互作用。通过改变转鼓的半径尺寸，得出了轮胎在不同转鼓半径情况下的接触印痕、接触面积以及轮胎接触法向力之间的关系。研究结果表明，当曲面半径在3m以上时，其对轮胎-转鼓曲面的接触界面特性影响效应减小。 另外，研究了轮胎—软地面之间的相互作用。基于Bekker提出的轮胎与软地面接触界面形状作为轮胎与软地面接触的边界条件，利用本文提出的轮胎与曲面接触的有限元模拟方法，得到了稳态滚动条件下轮胎-松软地面相互作用有限元分析方法。该方法避开轮胎和土壤直接接触分析，方法简单有效。分析结果表明，利用本方法分析轮胎-松软地面相互作用是合理可靠的。更多还原

【Abstract】 According to the actual structure of 185/70R14C half steel radial passenger tire, by means of MSC.MARC code, comprehensively thought of nonlinear rubber constitutive equations, geometric non-linearity and the anisotropy of cord-rubber composite, axisymmetric FEA and three-dimensional FEA models of tire were built in Mentat.On the basis of the actual usage of tire, we simulated the procedure of inflation. So, we could get the deformed configurations of this procedure, and also calculate the sectional width B’ and diameter D’ of tire under inflation. The stress/strain fields of tire were given, so we could learn about the status undergoing force of every part in this tire.The tire contacting with road and steady state rolling of tire were simulated. Herein, the evaluation of stresses and the contacting status on belts and carcasses of tire were analyzed.Based on the three-dimensional FEA models of tire, by means of changing the slip angle of tire, the lateral property of tire was analyzed at different slip angles. The results show good agreement with the experimental data, which proved that the FE model in analyzing the cornering tires is correct and reliable.The analysis of the interaction mechanical properties between lire and drums is studied under steady state rolling status. By means of changing the radius of drums, the influence of drums’ radius on tire mechanical properties, such as footprint, area of touching, contact normal force of tire, is evaluated. The results show that when the radius is more than three meters, the influence of drum’s radius to the tire can be ignored.Moreover, the interaction between tire and soft ground was simulated. Using the Bekker’s contact curved surface as the boundary conditions, according to the the analysis of the interaction mechanical properties between tire and drums, a module更多还原