buckling strain

简明释义

弯曲应变

英英释义

例句

1.During the testing phase, we observed a significant increase in buckling strain 屈曲应变 under heavy loads.

在测试阶段，我们观察到在重载下buckling strain 屈曲应变显著增加。

2.The design must account for buckling strain 屈曲应变 to ensure structural integrity.

设计必须考虑到buckling strain 屈曲应变以确保结构完整性。

3.In this experiment, we measured the buckling strain 屈曲应变 of various materials to compare their strength.

在这个实验中，我们测量了各种材料的buckling strain 屈曲应变以比较它们的强度。

4.The engineer calculated the maximum buckling strain 屈曲应变 that the column could withstand before failure.

工程师计算了柱子在失效之前能够承受的最大buckling strain 屈曲应变。

5.The stability of the bridge was compromised due to excessive buckling strain 屈曲应变 during the storm.

由于暴风雨期间过度的buckling strain 屈曲应变，桥的稳定性受到影响。

作文

In the field of structural engineering, understanding the concept of buckling strain is crucial for the design and analysis of various structures. Buckling strain, defined as the deformation that occurs when a structural member is subjected to compressive loads beyond its critical limit, can lead to catastrophic failures if not properly accounted for. This phenomenon typically affects slender structures such as columns and beams, where the ratio of length to cross-sectional dimensions is significant. When a compressive force is applied to a structural member, it may initially withstand the load without any visible deformation. However, as the load increases, the member reaches a point known as the critical buckling load. Beyond this point, the member will experience a sudden lateral deflection, which is the manifestation of buckling strain. This deflection can compromise the integrity of the structure, leading to potential collapse or severe damage. To prevent such failures, engineers must calculate the critical buckling load using established formulas that take into account factors such as material properties, geometric dimensions, and boundary conditions. The most common formula used is Euler's formula, which provides a theoretical basis for predicting the buckling behavior of long, slender columns. It states that the critical load (P_cr) is proportional to the square of the column's effective length (L) divided by the square of its radius of gyration (r): P_cr = π²EI/(L²), where E is the modulus of elasticity and I is the moment of inertia. Understanding buckling strain also involves recognizing the impact of imperfections in real-world applications. Structural members are rarely perfect; they may have initial imperfections due to manufacturing processes or construction errors. These imperfections can significantly reduce the critical buckling load and increase the likelihood of failure. Engineers often conduct stability analyses that incorporate these imperfections to ensure safety and reliability in their designs. Moreover, the effects of buckling strain are not limited to static loads. Dynamic loads, such as those caused by wind or seismic activity, can also induce buckling in structures. This necessitates the integration of dynamic analysis in the design process to account for the additional forces that may act on a structure during its lifespan. In conclusion, buckling strain is a fundamental concept in structural engineering that requires careful consideration during the design and analysis phases. By understanding the critical buckling load, the influence of imperfections, and the effects of dynamic loading, engineers can create safer and more resilient structures. As our infrastructure continues to evolve and demand increases for taller and more slender designs, the importance of addressing buckling strain will only continue to grow. Therefore, ongoing education and research in this area are essential for the advancement of structural engineering practices.

在结构工程领域，理解屈曲应变的概念对于各种结构的设计和分析至关重要。屈曲应变被定义为当结构构件受到超过其临界极限的压缩载荷时发生的变形，如果不加以妥善处理，可能会导致灾难性的故障。这种现象通常影响细长结构，如柱和梁，其长度与横截面尺寸的比率很大。当对结构构件施加压缩力时，最初它可能在没有任何可见变形的情况下承受载荷。然而，随着载荷的增加，构件达到了一个称为临界屈曲载荷的点。在这一点之后，构件将经历突然的侧向偏转，这是屈曲应变的表现。这种偏转可能会损害结构的完整性，导致潜在的倒塌或严重损坏。为了防止这种故障，工程师必须使用已建立的公式计算临界屈曲载荷，考虑材料特性、几何尺寸和边界条件等因素。最常用的公式是欧拉公式，它为预测长细柱的屈曲行为提供了理论基础。该公式表明，临界载荷(P_cr)与柱的有效长度(L)的平方与其回转半径(r)的平方成反比：P_cr = π²EI/(L²)，其中E是弹性模量，I是惯性矩。理解屈曲应变还涉及到认识到现实应用中缺陷的影响。结构构件几乎从来都是完美的；由于制造过程或施工错误，它们可能存在初始缺陷。这些缺陷会显著降低临界屈曲载荷，并增加故障的可能性。工程师通常进行稳定性分析，纳入这些缺陷，以确保他们设计的安全性和可靠性。此外，屈曲应变的影响不仅限于静态载荷。动态载荷，例如风或地震活动引起的载荷，也可能在结构中诱发屈曲。这就需要在设计过程中整合动态分析，以考虑在结构生命周期内可能作用于结构的额外力。总之，屈曲应变是结构工程中的一个基本概念，在设计和分析阶段需要仔细考虑。通过了解临界屈曲载荷、缺陷的影响以及动态载荷的效果，工程师可以创建更安全、更具韧性的结构。随着我们的基础设施不断发展，对更高、更细长设计的需求增加，解决屈曲应变的重要性只会继续增长。因此，在这一领域的持续教育和研究对于推动结构工程实践的发展至关重要。