研究了静水压力对粘弹性功能梯度材料与结构的力学性能的影响.基于粘弹性材料Boltzmanna积分型本构关系式,推导了静水压力作用下粘弹性功能梯度材料的本构关系,并假设其蠕变模量在结构厚度方向上连续变化,组分材料的体积分数呈幂律分布;在此基础上,研究了静水压力引起的粘弹性功能梯度结构横截面材料属性分布、厚度、刚度及功能梯度结构弯曲、屈曲和振动特性的变化,给出了恒定静水压力作用下,不同体积分数指数的粘弹性功能梯度结构厚度与刚度随时间变化的曲线.计算结果表明,在静水压力作用下,粘弹性功能梯度结构的厚度和刚度都发生了变化,并最终导致其弯曲、屈曲和振动性能都发生了较大的变化.
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