true stress

简明释义

实际应力

英英释义

例句

1.In tensile testing, the true stress 真实应力 reflects the actual stress experienced by the specimen as it deforms.

在拉伸测试中，true stress 真实应力 反映了样本在变形时所经历的实际应力。

2.To accurately predict failure, it's important to consider true stress 真实应力 rather than just nominal stress.

为了准确预测失效，考虑true stress 真实应力 而不仅仅是名义应力是很重要的。

3.Engineers often use true stress 真实应力 to determine the yield point of materials.

工程师通常使用true stress 真实应力 来确定材料的屈服点。

4.The difference between engineering stress and true stress 真实应力 becomes significant at large deformations.

工程应力和true stress 真实应力 之间的差异在大变形时变得显著。

5.The calculation of true stress 真实应力 is essential for understanding material behavior under load.

计算true stress 真实应力 对于理解材料在载荷下的行为至关重要。

作文

Understanding the concept of true stress is crucial in the field of material science and engineering. True stress refers to the actual stress experienced by a material when it undergoes deformation, as opposed to the nominal or engineering stress that is often used in calculations. It is defined as the load divided by the instantaneous cross-sectional area of the material. This distinction is important because materials do not deform uniformly under load; they may experience changes in their cross-sectional area, which affects the stress distribution within the material.In practical applications, engineers must consider true stress when designing structures and components that will be subjected to various loads. For example, when a metal is stretched, its cross-sectional area decreases, leading to an increase in true stress. This means that the material could fail at a lower load than predicted if only nominal stress values are used. Understanding this concept can help prevent structural failures and ensure safety in engineering designs.Furthermore, true stress plays a significant role in the study of material properties such as yield strength and ultimate tensile strength. The yield strength is the point at which a material begins to deform plastically, while the ultimate tensile strength is the maximum stress a material can withstand before failure. Both of these properties are better understood when considering true stress, as they provide a more accurate representation of how materials behave under real-world conditions.In addition to engineering applications, true stress is also relevant in the fields of biomechanics and geology. For instance, in biomechanics, understanding the true stress on bones during physical activity can help in designing better orthopedic implants and rehabilitation protocols. Similarly, in geology, knowing the true stress acting on rock formations can assist in predicting landslides and other geological hazards.To calculate true stress, one must first determine the load applied to the material and the instantaneous cross-sectional area. As the material deforms, the area changes, so continuous monitoring is necessary for accurate calculations. This can be done using advanced techniques such as digital image correlation or strain gauges, which allow for real-time assessment of material behavior under load.In conclusion, the concept of true stress is essential for anyone involved in material science, engineering, biomechanics, or geology. It provides a more accurate understanding of how materials respond to loads and helps in making informed decisions regarding material selection and design. By taking into account the true behavior of materials, engineers and scientists can create safer and more efficient structures and systems, ultimately benefiting society as a whole.

理解真实应力的概念在材料科学和工程领域至关重要。真实应力是指材料在变形过程中实际经历的应力，与通常在计算中使用的名义或工程应力相对。它被定义为负载除以材料的瞬时横截面积。这个区别很重要，因为材料在负载下不会均匀变形；它们的横截面积可能会发生变化，这会影响材料内部的应力分布。在实际应用中，工程师在设计将承受各种负载的结构和组件时必须考虑真实应力。例如，当金属被拉伸时，其横截面积会减小，从而导致真实应力增加。这意味着如果仅使用名义应力值，材料可能会在预测的较低负载下失效。理解这一概念可以帮助防止结构故障，并确保工程设计的安全性。此外，真实应力在研究材料性质如屈服强度和极限抗拉强度方面也起着重要作用。屈服强度是材料开始发生塑性变形的点，而极限抗拉强度是材料在失效前能够承受的最大应力。当考虑真实应力时，这两种特性更易于理解，因为它们提供了材料在现实条件下行为的更准确表示。除了工程应用外，真实应力在生物力学和地质学领域也相关。例如，在生物力学中，了解在体育活动中骨骼上的真实应力可以帮助设计更好的骨科植入物和康复方案。同样，在地质学中，了解作用于岩石形成的真实应力可以帮助预测滑坡和其他地质灾害。要计算真实应力，首先必须确定施加于材料的负载和瞬时横截面积。随着材料的变形，面积会发生变化，因此需要持续监测以进行准确计算。这可以通过数字图像相关或应变计等先进技术来实现，这些技术允许实时评估材料在负载下的行为。总之，真实应力的概念对于任何涉及材料科学、工程、生物力学或地质学的人来说都是必不可少的。它提供了对材料如何响应负载的更准确理解，并有助于在材料选择和设计方面做出明智的决策。通过考虑材料的真实行为，工程师和科学家可以创建更安全和更高效的结构和系统，最终使整个社会受益。