plastic hinge·

简明释义

塑性铰

英英释义

例句

1.Understanding the mechanics of a plastic hinge is essential for predicting how structures will behave during earthquakes.

理解塑性铰接的力学对于预测结构在地震期间的表现至关重要。

2.The formation of a plastic hinge can indicate the point of failure in a beam during an overload situation.

在过载情况下，塑性铰接的形成可以指示梁的失效点。

3.In reinforced concrete design, the location of a plastic hinge can be strategically placed to absorb energy.

在钢筋混凝土设计中，塑性铰接的位置可以被战略性地放置，以吸收能量。

4.When designing a bridge, engineers often rely on the behavior of a plastic hinge to ensure stability under load.

在设计桥梁时，工程师通常依赖于塑性铰接的行为以确保在负载下的稳定性。

5.In structural engineering, a plastic hinge is a critical component that allows for rotation at a joint without losing strength.

在结构工程中，塑性铰接是一个关键组成部分，它允许在接头处旋转而不失去强度。

作文

In the field of structural engineering, the concept of plastic hinge plays a crucial role in understanding how structures behave under load. A plastic hinge refers to a specific type of deformation that occurs in materials when they are subjected to bending moments beyond their yield strength. Unlike elastic deformation, where materials return to their original shape after the load is removed, plastic deformation leads to permanent changes in the material's structure. This phenomenon is particularly important in the design and analysis of beams and frames, as it helps engineers predict how these structures will respond during extreme events such as earthquakes or heavy winds.When a beam experiences bending, it initially deforms elastically. However, as the load increases, certain sections of the beam may reach their yield point, leading to the formation of a plastic hinge. At this point, the material at that section has yielded and can rotate without any additional moment being applied. This rotation allows the beam to redistribute loads and maintain overall stability, which is essential for preventing catastrophic failures in structures.The formation of plastic hinges is a key aspect of plastic design methods, which focus on the ultimate strength of structures rather than their elastic behavior. By intentionally designing structures to develop plastic hinges, engineers can create more resilient systems that are capable of absorbing energy during seismic events. This approach contrasts with traditional methods that prioritize stiffness and deflection control, often resulting in overly conservative designs.One of the significant advantages of utilizing plastic hinges in structural design is the ability to create structures that can sustain large deformations while still supporting loads. For instance, in the case of a moment-resisting frame, the design can incorporate plastic hinges at strategic locations to allow for controlled rotation during an earthquake. This controlled behavior not only enhances the safety of the structure but also minimizes damage to non-structural components, reducing repair costs and downtime after an event.Moreover, the use of plastic hinges can lead to more economical designs. By allowing certain areas of the structure to yield, engineers can optimize material usage, reducing the overall weight and cost of construction. This optimization is particularly beneficial in high-rise buildings and bridges, where material costs can significantly impact the project budget.In conclusion, the concept of plastic hinge is fundamental to modern structural engineering. Understanding how plastic hinges work enables engineers to design safer, more efficient, and cost-effective structures. As we continue to face challenges posed by natural disasters and the need for sustainable construction practices, the principles surrounding plastic hinges will undoubtedly remain at the forefront of engineering innovation. Through continued research and application of these concepts, we can build a future where our structures are not only strong but also resilient against the forces of nature.

在结构工程领域，塑性铰的概念在理解结构在载荷下的行为中起着至关重要的作用。塑性铰指的是当材料在超过其屈服强度的弯矩作用下发生的一种特定形变。与弹性变形不同，弹性变形是指材料在卸载后能恢复到原始形状，而塑性变形则会导致材料结构的永久性变化。这一现象在梁和框架的设计与分析中尤为重要，因为它帮助工程师预测这些结构在极端事件（如地震或强风）中的反应。当梁经历弯曲时，它最初是以弹性方式变形。然而，随着载荷的增加，梁的某些部分可能会达到屈服点，从而形成塑性铰。此时，该部分材料已屈服，可以在不施加额外弯矩的情况下旋转。这种旋转允许梁重新分配载荷并维持整体稳定性，这对于防止结构的灾难性破坏至关重要。塑性铰的形成是塑性设计方法的一个关键方面，该方法关注结构的极限强度而不是其弹性行为。通过故意设计结构以形成塑性铰，工程师可以创建更具韧性的系统，能够在地震事件中吸收能量。这种方法与优先考虑刚度和挠度控制的传统方法形成对比，后者往往导致过于保守的设计。利用塑性铰进行结构设计的一个显著优势是能够创建在承受载荷的同时可以承受大变形的结构。例如，在抗弯框架的情况下，设计可以在战略位置上结合塑性铰，以允许在地震期间的控制旋转。这种可控行为不仅增强了结构的安全性，还最小化了对非结构组件的损害，从而降低了事件后的修复成本和停工时间。此外，使用塑性铰还可以导致更经济的设计。通过允许结构的某些区域屈服，工程师可以优化材料使用，减少整体重量和施工成本。这种优化在高层建筑和桥梁中尤其有益，因为材料成本可能会显著影响项目预算。总之，塑性铰的概念是现代结构工程的基础。理解塑性铰的工作原理使工程师能够设计出更安全、更高效和更具成本效益的结构。随着我们继续面临自然灾害带来的挑战以及对可持续建筑实践的需求，围绕塑性铰的原则无疑将继续处于工程创新的前沿。通过对这些概念的持续研究和应用，我们可以构建一个未来，使我们的结构不仅坚固，而且能够抵御自然力量的影响。