本文从混合变分法原理着手，对弹性接触问题提出一种新的数学模式，并从中导出有限元的近似公式。
A new mathematical model for the non-Hertz contact problems is proposed based on the mixed variational principle. From this model, the finite element approximate formulae are derived.
其次，研究了柔性化甘蔗的建立方法并选择适于研究甘蔗收割机的方法，并从理论上分析含柔性梁机械系统的有限段方法。
Next, it summarizes the method of setting up flexible sugarcane, and analyses the finite element method of mechanical system containing flexible grider theoretically.
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