yield point

简明释义

屈服点；降服点

英英释义

例句

1.In tensile testing, the yield point indicates the transition from elastic to plastic deformation.

在拉伸测试中，屈服点表示从弹性变形到塑性变形的过渡。

2.Understanding the yield point is crucial for designing safe structures.

理解屈服点对于设计安全结构至关重要。

3.The engineer calculated the yield point of the material to ensure it could withstand the applied forces.

工程师计算了材料的屈服点，以确保它能够承受施加的力。

4.The yield point of steel is significantly higher than that of aluminum.

钢的屈服点明显高于铝。

5.When the stress exceeds the yield point, the material will deform permanently.

当应力超过屈服点时，材料将永久变形。

作文

The concept of the yield point is fundamental in the field of materials science and engineering. It refers to the stress at which a material begins to deform plastically. Beyond this point, the material will not return to its original shape once the load is removed. Understanding the yield point is crucial for engineers when designing structures and components that must withstand various forces without failing. For instance, in civil engineering, the yield point of steel is a critical factor when determining the safety and stability of buildings and bridges.When a material is subjected to stress, it initially behaves elastically, meaning it can return to its original dimensions after the stress is removed. However, as the stress increases and reaches the yield point, the material undergoes plastic deformation. This means that permanent changes occur in the material's structure. The yield point can vary significantly between different materials; for example, metals typically have a well-defined yield point, while polymers may exhibit a more gradual transition from elastic to plastic behavior.In practical applications, knowing the yield point helps engineers select appropriate materials for specific applications. For example, in the automotive industry, manufacturers consider the yield point of materials used in car frames to ensure they can absorb impact during collisions without crumpling excessively. Similarly, in aerospace engineering, the yield point of materials must be carefully evaluated to ensure that aircraft can withstand the stresses of flight without structural failure.Moreover, the yield point is not just a static value; it can be influenced by various factors, including temperature, strain rate, and the presence of impurities or defects in the material. For instance, increasing the temperature of a metal can lower its yield point, making it more ductile but less able to resist deformation under load. This phenomenon is particularly important in applications where materials are exposed to high temperatures, such as in engines or turbines.In summary, the yield point is a critical parameter in the study of material properties, influencing design choices across various engineering disciplines. By understanding the yield point, engineers can ensure the reliability and safety of their designs, ultimately leading to better-performing products and structures. The ability to predict how materials will behave under stress allows for innovations in technology and improvements in safety standards, making the yield point an essential concept in modern engineering practices.

‘屈服点’的概念在材料科学和工程领域中是基本的。它指的是材料开始发生塑性变形的应力。在这一点之后，材料在去除负载后将无法恢复到其原始形状。理解‘屈服点’对工程师在设计必须承受各种力而不失效的结构和组件时至关重要。例如，在土木工程中，钢材的‘屈服点’是确定建筑物和桥梁安全性和稳定性的关键因素。当材料受到应力时，它最初表现出弹性，这意味着在去除应力后它可以恢复到其原始尺寸。然而，随着应力的增加并达到‘屈服点’，材料经历塑性变形。这意味着材料的结构发生了永久性变化。‘屈服点’在不同材料之间可能有显著差异；例如，金属通常具有明确的‘屈服点’，而聚合物可能表现出从弹性到塑性行为的更渐进过渡。在实际应用中，了解‘屈服点’有助于工程师为特定应用选择合适的材料。例如，在汽车工业中，制造商会考虑用于汽车框架的材料的‘屈服点’，以确保它们在碰撞期间能够吸收冲击，而不会过度凹陷。同样，在航空航天工程中，材料的‘屈服点’必须经过仔细评估，以确保飞机能承受飞行中的应力而不发生结构故障。此外，‘屈服点’不仅是一个静态值；它可以受到多种因素的影响，包括温度、应变速率以及材料中的杂质或缺陷的存在。例如，提高金属的温度可以降低其‘屈服点’，使其更具延展性，但在负载下更难以抵抗变形。这一现象在材料暴露于高温的应用中尤为重要，例如在发动机或涡轮中。总之，‘屈服点’是材料性能研究中的一个关键参数，影响着各个工程学科的设计选择。通过理解‘屈服点’，工程师可以确保设计的可靠性和安全性，最终导致更高性能的产品和结构。预测材料在应力下的行为的能力使得技术创新和安全标准的改善成为可能，使得‘屈服点’成为现代工程实践中的一个重要概念。