The aim of this work is to highlight an equivalence between the strain rate, the temperature and the water content effect on the dynamic mechanical response of polyamide 6,6. Based on WLF-like approach, the time-temperature-water content equivalence of store modulus $E\text{'}$ and loss modulus $E\text{'}\text{'}$ had been demonstrated. Indeed increasing the water content results in a steady decrease of glass transition temperature toward a limiting value. This change in glass transition temperature leads to an horizontal shift of master curves in accordance with the water content level. A new shift factor can be introduced and a new relationship had been established giving the equivalent strain-rate at a temperature reference and water content reference. Finally, time-temperature-water content equivalence of mechanical behaviour of polyamide 6,6 had been validated at large strain on conditioned specimens subjected to loading-unloading tensile tests.

这项工作的目的是强调应变率，温度和水含量对聚酰胺6,6的动态机械响应的影响之间的等价关系。基于类似WLF的方法，储能模量的时间-温度-水含量当量$E\text{'}$ 和损耗模量 $E\text{'}\text{'}$已经被证明。实际上，增加水含量导致玻璃化转变温度朝着极限值稳定降低。玻璃化转变温度的这种变化导致主曲线根据含水量水平水平移动。可以引入新的位移因子，并建立了新的关系，从而给出了温度基准和水含量基准下的等效应变率。最后，已经在经受加载/卸载拉伸试验的条件试样上，在较大应变下验证了聚酰胺6,6的力学行为在时间-温度-水含量方面的等效性。