bending stress

简明释义

弯曲应力

英英释义

例句

1.Excessive bending stress 弯曲应力 can lead to structural failure in bridges.

过度的bending stress 弯曲应力可能导致桥梁的结构失效。

2.To prevent failure, we must monitor the bending stress 弯曲应力 during the test.

为了防止失效，我们必须在测试期间监测bending stress 弯曲应力。

3.We need to analyze the bending stress 弯曲应力 in the concrete slab before construction.

在施工之前，我们需要分析混凝土板中的bending stress 弯曲应力。

4.The engineer calculated the bending stress 弯曲应力 on the beam to ensure it could support the load.

工程师计算了梁上的bending stress 弯曲应力，以确保它能够承受负载。

5.The bending stress 弯曲应力 caused by the weight of the roof was within acceptable limits.

屋顶重量造成的bending stress 弯曲应力在可接受的范围内。

作文

Bending stress is a fundamental concept in mechanics and engineering that describes the internal stress induced in a material when it is subjected to bending forces. When a beam or any structural element is loaded, it tends to deform, creating tension on one side and compression on the other. This phenomenon leads to what is known as bending stress (弯曲应力), which is crucial for understanding how materials behave under load. Engineers must consider bending stress when designing structures to ensure safety and functionality.To illustrate this concept, let’s consider a simple example of a wooden beam supported at both ends. When a weight is placed in the middle of the beam, it bends downwards. The upper part of the beam experiences compression, while the lower part undergoes tension. This differential stress distribution is what we refer to as bending stress (弯曲应力). The maximum bending stress occurs at the outermost fibers of the beam, where the material is most susceptible to failure.The calculation of bending stress (弯曲应力) can be derived from the bending moment applied to the beam. The formula used is: \[ \sigma = \frac{M \cdot c}{I} \] Where: - \( \sigma \) is the bending stress, - \( M \) is the bending moment, - \( c \) is the distance from the neutral axis to the outermost fiber, and - \( I \) is the moment of inertia of the beam’s cross-section.Understanding bending stress (弯曲应力) is essential not only for beams but also for various structural components such as bridges, buildings, and even mechanical parts like shafts and axles. Each of these elements experiences bending under different loading conditions, and engineers must ensure that the materials used can withstand the calculated stresses without failing.In practical applications, the choice of material plays a significant role in how well a structure can handle bending stress (弯曲应力). Materials like steel and reinforced concrete are commonly used in construction due to their high tensile and compressive strengths. However, even these materials have limits, and exceeding the allowable bending stress (弯曲应力) can lead to catastrophic failures. Therefore, safety factors are often incorporated into design calculations to account for unexpected loads or material imperfections.Moreover, the effects of bending stress (弯曲应力) are not only limited to structural integrity but also influence the service life of components. Repeated bending can lead to fatigue, a process that weakens materials over time, potentially leading to failure even if the initial loads were within safe limits. This is particularly important in applications such as automotive and aerospace engineering, where components are subjected to cyclic loads.In conclusion, bending stress (弯曲应力) is a critical factor in the design and analysis of structural elements. A thorough understanding of how bending affects materials allows engineers to create safer and more efficient structures. By calculating and managing bending stress (弯曲应力), we can ensure that our buildings, bridges, and machines not only perform effectively but also stand the test of time.