lower yield point

简明释义

下屈服点

英英释义

例句

1.A lower yield point can lead to premature failure in high-stress applications.

在高应力应用中，较低屈服点可能导致过早失效。

2.In engineering, a lower yield point means the material can be used in applications requiring flexibility.

在工程中，较低屈服点意味着该材料可以用于需要灵活性的应用。

3.Understanding the lower yield point of steel helps in designing safer structures.

了解钢材的较低屈服点有助于设计更安全的结构。

4.Materials with a lower yield point are often used in seismic design to absorb energy.

具有较低屈服点的材料通常用于抗震设计，以吸收能量。

5.The material's lower yield point indicates it will deform more easily under stress.

材料的较低屈服点表明它在应力下更容易变形。

作文

The concept of the lower yield point is crucial in materials science and engineering, particularly when discussing the mechanical properties of materials. The lower yield point, also known as the yield strength, refers to the stress at which a material begins to deform plastically. Below this stress level, a material will return to its original shape when the applied load is removed. However, once the stress exceeds the lower yield point, permanent deformation occurs, and the material will not return to its original form. This property is significant when designing structures, as engineers must ensure that the materials used can withstand the stresses they will encounter without exceeding their lower yield point.Understanding the lower yield point is essential for various applications, from constructing buildings to manufacturing consumer goods. For instance, in the construction industry, steel beams are commonly used due to their high strength-to-weight ratio. Engineers must select steel grades with appropriate lower yield points to ensure that the beams can support the loads they will bear without failing. If the stress on the beams exceeds the lower yield point, it could lead to catastrophic structural failure, putting lives at risk and resulting in costly repairs.In addition to construction, the lower yield point plays a vital role in the automotive and aerospace industries. Vehicles and aircraft are subjected to various forces during operation, and understanding the materials' lower yield points helps engineers design components that can endure these forces without deforming. For example, the frame of a car must be made from materials that can withstand impacts without exceeding their lower yield point. This ensures that the vehicle remains safe for passengers while maintaining its structural integrity.Moreover, the lower yield point is not a fixed value; it can vary based on several factors, including temperature, strain rate, and the presence of defects within the material. For instance, metals typically exhibit different lower yield points at varying temperatures. At higher temperatures, some metals may have a lower yield strength, making them more susceptible to deformation under stress. This is particularly important in applications where materials are exposed to extreme temperatures, such as in jet engines or industrial furnaces.Additionally, the lower yield point can influence the manufacturing processes used to shape materials. Techniques like forging, casting, and machining require an understanding of the lower yield point to avoid damaging the material during production. If a material is processed at a temperature or under conditions that exceed its lower yield point, it can lead to defects, reduced performance, and increased costs.In conclusion, the lower yield point is a fundamental concept in materials science that significantly impacts various industries. By understanding the lower yield point of materials, engineers can make informed decisions about material selection, design, and processing to ensure safety and reliability. As technology advances and new materials are developed, the importance of understanding the lower yield point will continue to grow, highlighting the need for ongoing research and education in this critical area of engineering.

低屈服点的概念在材料科学和工程中至关重要，特别是在讨论材料的机械性能时。低屈服点，也称为屈服强度，是指材料开始发生塑性变形的应力。在这个应力水平以下，材料在施加负载后会恢复到其原始形状。然而，一旦应力超过低屈服点，就会发生永久变形，材料将无法恢复到其原始形态。这一性质在结构设计中具有重要意义，因为工程师必须确保所使用的材料能够承受它们将遇到的应力，而不超过其低屈服点。理解低屈服点对各种应用至关重要，从建筑到消费品制造。例如，在建筑行业，由于钢梁具有高强度与重量比，因此被广泛使用。工程师必须选择具有适当低屈服点的钢材等级，以确保梁能够支撑它们将承受的负载而不会失效。如果梁上的应力超过了低屈服点，可能会导致灾难性的结构失效，危及生命并造成昂贵的维修费用。除了建筑，低屈服点在汽车和航空航天行业中也发挥着重要作用。车辆和飞机在运行过程中会受到各种力量的影响，理解材料的低屈服点帮助工程师设计能够承受这些力量而不变形的组件。例如，汽车的框架必须由能够承受冲击而不超过其低屈服点的材料制成。这确保了车辆对乘客的安全，同时保持其结构完整性。此外，低屈服点并不是一个固定值；它可以根据温度、应变速率和材料内部缺陷的存在等多个因素而变化。例如，金属在不同温度下通常表现出不同的低屈服点。在较高温度下，一些金属可能具有较低的屈服强度，使其在应力下更容易变形。这在材料暴露于极端温度的应用中尤为重要，例如喷气发动机或工业炉。此外，低屈服点还会影响用于成型材料的制造工艺。锻造、铸造和机械加工等技术需要了解低屈服点以避免在生产过程中损坏材料。如果材料在超过其低屈服点的温度或条件下加工，可能会导致缺陷、性能降低和成本增加。总之，低屈服点是材料科学中的一个基本概念，对各个行业有着重大影响。通过理解材料的低屈服点，工程师可以在材料选择、设计和加工方面做出明智的决策，以确保安全和可靠性。随着技术的发展和新材料的开发，理解低屈服点的重要性将继续增长，突显了在这一关键工程领域进行持续研究和教育的必要性。