stress concentration

简明释义

应力集中

英英释义

例句

1.The engineer explained how the design had to account for stress concentration 应力集中 around the joints.

工程师解释了设计如何必须考虑到接头周围的应力集中。

2.In the analysis of the beam, we found significant stress concentration 应力集中 near the support points.

在梁的分析中，我们发现支撑点附近有显著的应力集中。

3.Finite element analysis revealed high stress concentration 应力集中 zones that needed reinforcement.

有限元分析揭示了需要加固的高应力集中区域。

4.The presence of holes in the plate led to an increase in stress concentration 应力集中 factors.

板上的孔的存在导致了应力集中因子的增加。

5.To prevent failure, the components were designed to minimize stress concentration 应力集中 in critical areas.

为了防止失效，组件设计时尽量减少关键区域的应力集中。

作文

Stress concentration is a critical concept in the field of engineering and materials science. It refers to the phenomenon where stress is not evenly distributed across a material, leading to localized areas of high stress. These areas are known as stress concentration (应力集中). Understanding stress concentration is essential for engineers when designing structures and components that must withstand various loads and forces. One of the most common examples of stress concentration can be found in the presence of geometric discontinuities such as holes, notches, or sharp corners in a material. When a force is applied to a structure with these features, the stress around them increases significantly compared to other areas of the material. This localized increase in stress can lead to premature failure, fatigue, or even catastrophic collapse of the structure if not properly accounted for during the design process.To illustrate this further, consider a simple beam subjected to bending. If the beam has a hole drilled through it, the stress around the edges of the hole will be much higher than the stress in the rest of the beam. This is due to the fact that the material around the hole is unable to distribute the applied load evenly. Engineers must analyze these stress concentrations to ensure that the material can handle the expected loads without failing.There are various methods to mitigate the effects of stress concentration. One common approach is to use fillets or radii at the corners of a component instead of sharp edges. By doing so, the stress is spread out over a larger area, reducing the likelihood of failure. Another method involves using materials with higher tensile strength or ductility, which can better absorb and redistribute stress without fracturing.Finite element analysis (FEA) is a powerful tool that engineers use to study stress concentration in complex structures. FEA allows for detailed modeling of how different geometries and loading conditions affect stress distribution within a material. By simulating real-world conditions, engineers can identify potential weak points and make informed decisions about design modifications before physical prototypes are created.In conclusion, understanding stress concentration is vital for ensuring the safety and reliability of engineering designs. By recognizing the factors that contribute to localized stress increases, engineers can implement strategies to minimize these effects and enhance the performance of their structures. Whether through design modifications, material selection, or advanced analytical techniques, addressing stress concentration is an essential part of the engineering process that ultimately leads to safer and more efficient systems. In summary, the concept of stress concentration (应力集中) highlights the importance of considering how stress is distributed in materials. As technology advances and structures become more complex, the need to understand and manage stress concentration will only grow, making it a crucial area of study for future engineers.

应力集中是工程和材料科学领域的一个关键概念。它指的是材料中的应力分布不均匀，导致局部区域的高应力现象。这些区域被称为应力集中。理解应力集中对工程师在设计必须承受各种载荷和力的结构和组件时至关重要。应力集中的一个常见例子可以在材料中存在几何不连续性（如孔、缺口或尖角）时找到。当施加力量到具有这些特征的结构上时，这些区域周围的应力会显著高于材料的其他区域。这种局部应力增加可能导致过早失效、疲劳或甚至结构的灾难性崩溃，如果在设计过程中没有适当考虑。为了进一步说明这一点，考虑一根简单的弯曲梁。如果梁上钻了一个孔，孔边缘的应力将远高于梁其他部分的应力。这是因为孔周围的材料无法均匀分配施加的载荷。工程师必须分析这些应力集中，以确保材料能够承受预期的载荷而不发生失效。有多种方法可以减轻应力集中的影响。一种常见的方法是在组件的角落使用圆角或弯头，而不是尖锐的边缘。通过这样做，应力分布在更大区域，从而降低失效的可能性。另一种方法涉及使用具有更高抗拉强度或延展性的材料，这些材料可以更好地吸收和重新分配应力，而不会发生断裂。有限元分析（FEA）是工程师用来研究复杂结构中应力集中的强大工具。有限元分析允许详细建模不同几何形状和加载条件如何影响材料内部的应力分布。通过模拟现实世界的条件，工程师可以识别潜在的薄弱点，并在物理原型创建之前做出有关设计修改的明智决策。总之，理解应力集中对于确保工程设计的安全性和可靠性至关重要。通过认识到导致局部应力增加的因素，工程师可以实施策略以最小化这些影响，并增强其结构的性能。无论是通过设计修改、材料选择还是先进的分析技术，解决应力集中都是工程过程中的一个重要部分，最终导致更安全、更高效的系统。总之，应力集中（应力集中）的概念突显了考虑材料中应力分布的重要性。随着技术的进步和结构变得越来越复杂，理解和管理应力集中的需求只会增长，使其成为未来工程师研究的关键领域。