The tested results also show that the input vibration acceleration has great influence on the resonant amplitude and resonant frequency.
另外,测试表明振源加速度对永磁体共振振幅和拾振系统的共振频率有很大影响。
参考来源 - 基于MEMS技术的微型电磁式振动能量采集器的研究The self-healing behavior of engineered cementitious composites(ECC) materials was investigated. The residual strain, crack distribution characteristics,resonant frequency(RF) recovery under wet/dry conditioning cycles and the micro-performance of self-healing products like M45-ECC and HFA-ECC at various pre-loadings of 0.3%,0.5%,1.0%,and 2.0%were analyzed.
研究了在0.3%、0.5%、1.0%以及2.0%不同程度预加拉伸应变破坏下,两种不同配比、不同龄期的高延展性纤维增强水泥基复合材料M45-ECC及HFA-ECC的残余应变、裂缝分布特性、干湿自愈合循环环境中共振频率的恢复情况以及自愈合产物的微观特性。
参考来源 - 高延展性纤维增强水泥基复合材料自愈合行为·2,447,543篇论文数据,部分数据来源于NoteExpress
At the resonant frequency it appears that the structure has no apparent stiffness.
在共振频率上,结构好像没有明显的刚度。
We know that for most people their resonant frequency is between 7.5 and 4.5 breaths per minute.
我们知道对大多数人来说,他们的共振频率介于每分钟4.5次至7.5次呼吸之间。
Although seemingly solid, buildings can become remarkably fragile if they are shaken at a particular resonant frequency.
虽然表面看来是很坚固,但如果在特定的共振频率中受到振动的话,建筑物可以变得非常脆弱。
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