中文摘要：

对各种非局部弹性核函数进行分析比较,通过考虑超声激励参量的影响因素,建立了超声激励下的非局部弹性核参量公式,推导出了超声激励下的非局部弹性核函数公式,并对弹性核函数的衰减特性和作用条件进行了研究,并依据此公式对非局部超声振动下的应力进行预测计算,得出应力衰减现象能够通过频域内的非局部核函数衰减来解释。

英文摘要：

In this paper varieties of nonlocal elastic kernel functions are analyzed and compared.Through considering the influence factors of ultrasonic excitation parameters,the nonlocal kernel parameter formula under ultrasonic excitation is established and the nonlocal elastic kernel function is also deduced.The attenuation characteristics and effects of the elastic kernel function are also studied in this paper.The nonlocal stress under ultrasonic vibration is calculated based on the nonlocal elastic kernel formula.It is concluded that stress decay phenomenon can explain through nonlocal kernel function attenuation in frequencies.