effective length

简明释义

计算长度

英英释义

例句

1.The effective length of a wire can affect its electrical resistance.

电线的有效长度会影响其电阻。

2.The effective length of the beam is crucial for determining its load-bearing capacity.

梁的有效长度对于确定其承载能力至关重要。

3.For accurate results, ensure that the effective length of the sample is correctly measured.

为了获得准确的结果，确保样本的有效长度被正确测量。

4.In this experiment, we measured the effective length of the pendulum to calculate its period.

在这个实验中，我们测量了摆的有效长度以计算它的周期。

5.The effective length of the antenna determines its range and performance.

天线的有效长度决定了其范围和性能。

作文

In the realm of engineering and physics, the term effective length is often used to describe a specific measurement that plays a crucial role in determining the behavior of structural elements. The effective length can be defined as the length of a member that is considered effective in resisting buckling or other forms of failure under load. This concept is particularly relevant in the design of columns, beams, and other structural components where stability is a primary concern.Understanding the effective length is essential for engineers as it directly impacts the safety and reliability of structures. For instance, when designing a column, the effective length must be accurately calculated to ensure that the column can support the expected loads without failing. If the effective length is underestimated, the column may buckle under pressure, leading to catastrophic failures. Conversely, overestimating the effective length could result in unnecessary material usage and increased costs.The calculation of effective length varies depending on the conditions of support and the type of loading applied to the structure. In simple terms, the effective length of a column can be influenced by whether it is fixed at both ends, pinned at both ends, or has a combination of supports. For example, a column that is fixed at both ends will have a shorter effective length compared to one that is simply supported at both ends, because the fixed ends provide additional restraint against buckling.In addition to structural engineering, the concept of effective length also finds applications in various fields such as telecommunications and optics. In telecommunications, the effective length of a fiber optic cable can refer to the length of the fiber that contributes to signal transmission, factoring in losses due to bends or other imperfections. In optics, the effective length can describe the distance over which light travels within a medium, taking into account reflections and refractions that may occur.Moreover, the importance of the effective length extends beyond technical calculations; it also plays a significant role in ensuring compliance with safety regulations and standards. Engineers must adhere to established codes that dictate the necessary factors of safety for different materials and structural configurations. By accurately determining the effective length, engineers can ensure that their designs meet these regulatory requirements, thereby protecting public safety.In conclusion, the term effective length encompasses a vital aspect of structural analysis and design. It serves as a key indicator of how well a structural element can perform under load and is instrumental in preventing failures. Whether in engineering, telecommunications, or optics, understanding the effective length is crucial for professionals in these fields. As technology continues to advance, the methods for calculating and applying the effective length will likely evolve, but its significance will remain constant. Therefore, mastering the concept of effective length is essential for anyone involved in the design and analysis of structures or systems that rely on precise measurements for their performance and safety.

在工程和物理学领域，术语有效长度通常用于描述一个特定的测量，这在确定结构元素的行为中起着至关重要的作用。有效长度可以定义为在承受载荷下被认为对抵抗屈曲或其他形式的失效有效的构件长度。这个概念在设计柱、梁和其他结构组件时尤为相关，因为稳定性是主要关注点。理解有效长度对于工程师至关重要，因为它直接影响结构的安全性和可靠性。例如，在设计一根柱子时，必须准确计算其有效长度，以确保柱子能够支持预期的载荷而不会失效。如果低估了有效长度，柱子可能会在压力下屈曲，从而导致灾难性的失败。相反，高估有效长度可能导致不必要的材料使用和成本增加。有效长度的计算因支撑条件和施加于结构的载荷类型而异。简单来说，柱子的有效长度可能受其两端是固定支撑、两端铰接还是两者结合的影响。例如，一根两端固定的柱子的有效长度将比两端简单支撑的柱子短，因为固定端提供了额外的约束来抵抗屈曲。除了结构工程外，有效长度的概念在电信和光学等多个领域也有应用。在电信中，光纤电缆的有效长度可以指贡献于信号传输的光纤长度，考虑到由于弯曲或其他缺陷引起的损耗。在光学中，有效长度可以描述光在介质中传播的距离，考虑到可能发生的反射和折射。此外，有效长度的重要性不仅限于技术计算；它在确保遵守安全法规和标准方面也发挥着重要作用。工程师必须遵循规定的代码，这些代码规定了不同材料和结构配置所需的安全系数。通过准确确定有效长度，工程师可以确保他们的设计符合这些监管要求，从而保护公众安全。总之，术语有效长度涵盖了结构分析和设计的一个重要方面。它作为结构元素在载荷下性能的关键指标，对于防止失效至关重要。无论是在工程、电信还是光学领域，理解有效长度对于这些领域的专业人士来说都是至关重要的。随着技术的不断进步，计算和应用有效长度的方法可能会不断演变，但其重要性将始终保持不变。因此，掌握有效长度的概念对任何参与结构或系统设计与分析的人来说都是必不可少的，这些结构或系统依赖于精确的测量来确保其性能和安全性。