NONLINEAR FE ANALYSIS FOR RUBBER COMPOSITE STRUCTURES
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摘要: 用非线性有限元法对一种典型的橡胶复合材料结构——轮胎的力学性能进行了分析。给出了轮胎滚动边界值问题的数学描述和有限元列式及相应的求解策略。取旋转刚体构形为参考构形, 得到消去时间变量的惯性场和控制方程。用增量约束方法处理轮胎滚动接触问题可以达到收敛快、精度高。研究了滚动参数对轮胎总体和局部变形和受力的影响。计算结果与已有数据和试验相吻合, 对轮胎设计和汽车动力学有指导意义。Abstract: In this paper rolling tires——a typical rubber composite structure was analyzed by nonlinear FEM using several new techniques. The boundary value problem and FE modeling of rolling tires were presented. Also their solving scheme was developed. Taking spinning configuration as reference one, time can be eliminated out from inertial fields and governing equations. Rolling contact problem was handled by increment constraint method with tire contact friction force and vertical pressure between tire and roadway developed. The effect of operational condition on total and local displacement and load is studied. The computed results agree with data and experiments available, which shows the methods in this paper are reasonable.
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Key words:
- rubber composites
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