bending stress

简明释义

弯曲应力

英英释义

例句

1.Materials with high tensile strength often exhibit lower bending stress under load.

具有高抗拉强度的材料在负载下通常表现出较低的弯曲应力。

2.Engineers must calculate the bending stress in beams to ensure they can support the intended loads.

工程师必须计算梁中的弯曲应力以确保它们能够支撑预期的负载。

3.The design of the bridge took into account the bending stress caused by wind and traffic.

桥梁的设计考虑了风和交通造成的弯曲应力。

4.In civil engineering, understanding bending stress is crucial for designing safe structures.

在土木工程中，理解弯曲应力对于设计安全结构至关重要。

5.The beam failed due to excessive bending stress during the load test.

在负载测试中，该梁因过大的弯曲应力而失效。

作文

Bending stress is a crucial concept in the field of engineering and material science. It refers to the internal stress that develops in a material when it is subjected to bending forces. This type of stress occurs when a beam or structural element is loaded perpendicular to its length, causing it to bend. Understanding bending stress (弯曲应力) is essential for engineers when designing structures that can withstand various loads without failing.When a beam is bent, the top part of the beam experiences compression, while the bottom part experiences tension. This creates a distribution of stress across the cross-section of the beam. The maximum bending stress (弯曲应力) typically occurs at the outermost fibers of the beam, farthest from the neutral axis, which is the line along the length of the beam where the material is neither in tension nor compression. To calculate bending stress (弯曲应力), engineers use the formula:\[ \sigma = \frac{M \cdot c}{I} \]Where:- \( \sigma \) is the bending stress,- \( M \) is the bending moment applied to the beam,- \( c \) is the distance from the neutral axis to the outermost fiber,- \( I \) is the moment of inertia of the beam's cross-section.This equation shows how the bending moment and the geometry of the beam influence the bending stress (弯曲应力). A higher bending moment or a larger distance from the neutral axis results in greater stress. Therefore, when designing beams, engineers must consider the materials used, their properties, and the expected loads to ensure safety and functionality.In practical applications, understanding bending stress (弯曲应力) helps in selecting appropriate materials and dimensions for beams in buildings, bridges, and other structures. For instance, steel beams are often chosen for their high tensile strength, allowing them to handle significant bending stress (弯曲应力) without yielding. On the other hand, wooden beams may be more susceptible to failure under similar conditions due to their lower strength.Moreover, engineers must also consider factors such as fatigue, which can affect the performance of materials over time. Repeated loading and unloading cycles can lead to micro-cracks and eventual failure if the bending stress (弯曲应力) exceeds the material's endurance limit.In conclusion, bending stress (弯曲应力) is a vital aspect of structural engineering that influences the design and safety of various constructions. By accurately calculating and analyzing bending stress (弯曲应力), engineers can create structures that not only meet aesthetic and functional requirements but also ensure the safety and well-being of users. As technology advances, the methods for measuring and predicting bending stress (弯曲应力) continue to improve, further enhancing our ability to design resilient and durable structures.

弯曲应力是工程和材料科学领域中的一个关键概念。它指的是当材料受到弯曲力时，内部产生的应力。这种类型的应力发生在梁或结构元件垂直于其长度加载时，导致其弯曲。理解弯曲应力(bending stress)对于工程师在设计能够承受各种负荷而不失效的结构至关重要。当梁被弯曲时，梁的顶部部分经历压缩，而底部部分则经历拉伸。这在梁的横截面上产生了应力分布。最大弯曲应力(bending stress)通常发生在离中性轴最远的梁的外层纤维上，中性轴是沿梁长度的线，其材料既没有拉伸也没有压缩。要计算弯曲应力(bending stress)，工程师使用公式：\[ \sigma = \frac{M \cdot c}{I} \]其中：- \( \sigma \) 是弯曲应力，- \( M \) 是施加在梁上的弯矩，- \( c \) 是从中性轴到最外层纤维的距离，- \( I \) 是梁横截面的惯性矩。这个方程显示了弯矩和梁的几何形状如何影响弯曲应力(bending stress)。更高的弯矩或更大的中性轴距离会导致更大的应力。因此，在设计梁时，工程师必须考虑所用材料、其特性和预期负载，以确保安全和功能。在实际应用中，理解弯曲应力(bending stress)有助于选择适当的材料和梁的尺寸，用于建筑、桥梁和其他结构。例如，钢梁常因其高抗拉强度而被选用，使其能够承受显著的弯曲应力(bending stress)而不屈服。另一方面，木梁在类似条件下可能更容易发生失效，因为其强度较低。此外，工程师还必须考虑疲劳等因素，这可能影响材料随时间的性能。反复的加载和卸载循环可能导致微裂纹，并在弯曲应力(bending stress)超过材料的耐久极限时最终导致失效。总之，弯曲应力(bending stress)是结构工程中的一个重要方面，影响着各种建筑物的设计和安全。通过准确计算和分析弯曲应力(bending stress)，工程师可以创建不仅满足美学和功能要求，还能确保用户安全与健康的结构。随着技术的发展，测量和预测弯曲应力(bending stress)的方法不断改进，进一步增强了我们设计坚韧耐用结构的能力。