self sustained vibrations

简明释义

自激振动

英英释义

例句

1.In the experiment, we observed self sustained vibrations in the pendulum's motion.

在实验中，我们观察到摆动中的自持振动。

2.Engineers are studying self sustained vibrations in mechanical systems to improve efficiency.

工程师正在研究机械系统中的自持振动以提高效率。

3.The speaker's diaphragm operates on self sustained vibrations to produce sound.

扬声器的振膜通过自持振动来产生声音。

4.The design of the bridge must account for self sustained vibrations caused by wind.

桥梁的设计必须考虑到风引起的自持振动。

5.The tuning fork produces self sustained vibrations that create a clear musical tone.

音叉产生的自持振动产生了清晰的音乐音调。

作文

In the realm of physics and engineering, the concept of self sustained vibrations plays a crucial role in various applications. These vibrations occur when a system is able to maintain oscillations without any external force being applied. Understanding self sustained vibrations is essential for engineers and scientists as it can lead to both beneficial applications and potential hazards.To illustrate this concept, let’s consider a simple example of a swing. When you push a swing, it begins to move back and forth. If you continue to push it at just the right moments, the swing will keep moving indefinitely. This is an example of how a system can be driven by external forces. However, if the swing reaches a point where it continues to move without any additional pushes, it can be said that it is experiencing self sustained vibrations. In this case, the energy from the initial push is conserved and converted into kinetic energy, allowing the swing to oscillate on its own.In engineering, self sustained vibrations can be both advantageous and detrimental. For instance, in musical instruments like guitars or violins, the strings vibrate at certain frequencies to produce sound. The vibrations are self-sustaining because once the string is plucked, it continues to vibrate until the energy dissipates. This property is what gives these instruments their unique tones and resonance.On the other hand, self sustained vibrations can also lead to problems in mechanical systems. For example, in bridges or buildings, if the structure begins to vibrate at its natural frequency due to external forces like wind or earthquakes, it can lead to catastrophic failures. This phenomenon is known as resonance, where the amplitude of the vibrations increases to dangerous levels. Engineers must carefully design structures to avoid such scenarios, ensuring that they can withstand potential self sustained vibrations without compromising safety.Moreover, the study of self sustained vibrations extends beyond physical structures. In electronics, certain circuits can exhibit self-oscillating behavior, where they generate oscillations without an external clock signal. This principle is utilized in various devices, such as oscillators and radio transmitters, which rely on self sustained vibrations to function effectively.In summary, self sustained vibrations are a fascinating phenomenon that occurs in various fields, from music to engineering and electronics. Understanding this concept allows professionals to harness its benefits while mitigating risks associated with uncontrolled vibrations. As we continue to explore the intricacies of self sustained vibrations, it becomes evident that they hold significant importance in both theoretical studies and practical applications, shaping the way we design and interact with the world around us.

在物理和工程领域，自维持振动的概念在各种应用中发挥着至关重要的作用。这些振动发生在一个系统能够在没有外部施加力的情况下维持振荡时。理解自维持振动对工程师和科学家来说至关重要，因为它可以导致有益的应用和潜在的危害。为了说明这一概念，让我们考虑一个简单的例子：秋千。当你推秋千时，它开始前后摆动。如果你在恰当的时刻继续推它，秋千将无限期地继续移动。这是一个系统如何被外部力量驱动的例子。然而，如果秋千达到一个点，在没有任何额外推动的情况下继续移动，那么可以说它正在经历自维持振动。在这种情况下，来自初始推动的能量被保存并转化为动能，使秋千能够独立摆动。在工程学中，自维持振动既可以是有利的，也可能是有害的。例如，在吉他或小提琴等乐器中，弦在某些频率下振动以产生声音。这些振动是自我维持的，因为一旦弦被拨动，它会继续振动，直到能量耗散。这一特性赋予了这些乐器独特的音调和共鸣。另一方面，自维持振动也可能导致机械系统中的问题。例如，在桥梁或建筑物中，如果结构由于风或地震等外部力量开始以其固有频率振动，可能会导致灾难性的失败。这种现象被称为共振，其中振动的幅度增加到危险水平。工程师必须仔细设计结构，以避免此类情况，确保它们能够承受潜在的自维持振动而不影响安全。此外，自维持振动的研究超越了物理结构。在电子学中，某些电路可以表现出自振荡行为，即它们在没有外部时钟信号的情况下生成振荡。这一原理被用于各种设备，如振荡器和无线电发射器，这些设备依赖于自维持振动来有效运作。总之，自维持振动是一个迷人的现象，发生在音乐、工程和电子等各个领域。理解这一概念使专业人士能够利用其优势，同时减轻与失控振动相关的风险。随着我们继续探索自维持振动的复杂性，显而易见的是，它们在理论研究和实际应用中都具有重要意义，塑造了我们设计和与周围世界互动的方式。