Suppose the investigated material is linear-elastic, the multi-force effect should satisfy the superposition principle.

假设研究的材料为线弹性，多个力作用效应符合材料力学叠加原理。

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The exact solution of linear elastic fracture mechanics is suggested in this paper and the plastic zone of crack tip is calculated under the condition of strain-hardening of material.

本文从线弹性断裂力学的精确解出发，在考虑材料强化影响的情况下，计算出裂纹前缘的塑性区。

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Most back-calculation theories are based on the linear elastic layer system and quietude analysis method, which neglected the nonlinear peculiarity of the pavement material.

现有的反算理论大多建立在弹性层状体系和拟静力分析方法的基础之上，忽略了路面材料应力应变非线性特性。

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