bending moment

简明释义

1. 挠矩; 2. 弯矩; 3. 弯曲力矩;

英英释义

例句

1.A high bending moment can lead to structural damage if not properly addressed.

如果没有得到妥善处理，高弯矩可能导致结构损坏。

2.The engineer calculated the bending moment to ensure the beam could support the load without failure.

工程师计算了弯矩以确保梁能够在不发生故障的情况下支撑负载。

3.During the design phase, we need to analyze the bending moment for various load conditions.

在设计阶段，我们需要分析不同负载条件下的弯矩。

4.The software calculates the bending moment distribution along the length of the beam.

该软件计算梁沿长度方向的弯矩分布。

5.In bridges, the bending moment is critical for determining the size of the girders.

在桥梁中，弯矩对于确定大梁的尺寸至关重要。

作文

The concept of a bending moment is fundamental in the field of structural engineering and mechanics. It refers to the internal moment that induces bending in a structural element, such as a beam or a column, when subjected to external forces. Understanding the bending moment is crucial for engineers when designing structures that will safely support loads without failing. When a beam is loaded, it experiences various forces that create moments about its neutral axis. The bending moment at any section of the beam is calculated as the sum of the moments caused by the external loads acting on that section. This calculation helps engineers determine how much bending stress the material will experience, which is essential for ensuring that the structure can withstand the applied loads without deforming excessively or collapsing. For example, consider a simply supported beam with a point load applied at its center. The bending moment at the center of the beam is maximum, while the ends of the beam experience zero bending moment. This distribution of moments is critical for understanding how the beam will behave under load. Engineers use this information to select appropriate materials and dimensions for the beam, ensuring it has sufficient strength and rigidity. Moreover, the bending moment can be represented graphically using a moment diagram, which illustrates how the moment varies along the length of the beam. This diagram is a valuable tool for engineers as it visually represents the points of maximum stress and helps identify potential failure points. By analyzing the moment diagram, engineers can optimize their designs to enhance safety and performance. In more complex structures, such as frames or trusses, the analysis of bending moments becomes even more intricate. Multiple loads, supports, and connections must be considered, leading to a more complicated distribution of moments. Advanced methods, including finite element analysis, are often employed to accurately predict the bending moment and resulting stresses in these structures. Understanding the implications of bending moment is not limited to just theoretical applications; it also has real-world consequences. For instance, if a bridge is designed without adequately accounting for the bending moment caused by traffic loads, it could lead to severe structural failures. Therefore, engineers must rigorously analyze and incorporate bending moment calculations in their designs to ensure public safety. In conclusion, the bending moment is a critical concept in structural engineering that plays a vital role in the design and analysis of various structures. By comprehensively understanding how bending moments affect structural integrity, engineers can create safer and more efficient designs. The study of bending moment is not just an academic exercise; it has significant practical implications that directly impact the safety and reliability of the built environment. In summary, the bending moment serves as a key indicator of how structures respond to loads, making it an essential aspect of engineering education and practice.

弯矩的概念在结构工程和力学领域中是基础性的。它指的是当结构元件（如梁或柱）受到外部力作用时，诱发弯曲的内部力矩。理解弯矩对工程师在设计能够安全承载荷载而不发生失效的结构至关重要。当梁受载时，它经历各种力，这些力在其中性轴上产生力矩。梁任意截面的弯矩计算为作用在该截面上的外部荷载所造成的力矩之和。这一计算帮助工程师确定材料将经历多少弯曲应力，这对于确保结构能够承受施加的荷载而不发生过度变形或倒塌是必不可少的。例如，考虑一根简单支撑的梁，其中心施加了一个点载荷。此时，梁中心的弯矩达到最大，而梁的两端则经历零弯矩。这种力矩的分布对于理解梁在荷载下的行为至关重要。工程师利用这些信息选择合适的材料和尺寸，确保梁具有足够的强度和刚度。此外，弯矩可以通过力矩图形象地表示，该图显示了力矩沿梁长度的变化。这一图表是工程师的宝贵工具，因为它直观地展示了最大应力点，并有助于识别潜在的失效点。通过分析力矩图，工程师可以优化设计以增强安全性和性能。在更复杂的结构中，例如框架或桁架，弯矩的分析变得更加复杂。必须考虑多个荷载、支撑和连接，从而导致更复杂的力矩分布。通常采用先进的方法，如有限元分析，以准确预测这些结构中的弯矩及其导致的应力。理解弯矩的影响不仅限于理论应用；它也具有现实世界的后果。例如，如果一座桥梁在设计时没有充分考虑由交通荷载引起的弯矩，可能会导致严重的结构失效。因此，工程师必须严格分析并在设计中纳入弯矩计算，以确保公众安全。总之，弯矩是结构工程中的关键概念，在各种结构的设计和分析中发挥着重要作用。通过全面理解弯矩如何影响结构完整性，工程师可以创造出更安全、更高效的设计。弯矩的研究不仅仅是学术练习；它具有显著的实际意义，直接影响到建成环境的安全性和可靠性。总而言之，弯矩作为结构对荷载反应的关键指标，是工程教育和实践中的一个重要方面。