limit of proportionality

简明释义

比例限度

英英释义

例句

1.Understanding the limit of proportionality helps in predicting how materials will behave under different loads.

了解比例极限有助于预测材料在不同负载下的表现。

2.During the physics lab, we measured the limit of proportionality of various metals to compare their strength.

在物理实验室中，我们测量了各种金属的比例极限以比较它们的强度。

3.In engineering, the limit of proportionality refers to the maximum stress that a material can withstand while still returning to its original shape.

在工程学中，比例极限指的是材料在仍能恢复原形的情况下能够承受的最大应力。

4.When testing the elasticity of rubber bands, we must identify the limit of proportionality to ensure they do not break.

在测试橡皮筋的弹性时，我们必须识别比例极限以确保它们不会断裂。

5.The limit of proportionality is crucial for architects when designing structures to avoid material failure.

对于建筑师来说，比例极限在设计结构时至关重要，以避免材料失效。

作文

The concept of the limit of proportionality is fundamental in understanding the behavior of materials under stress. In physics and engineering, when a force is applied to an object, it deforms. This deformation can be elastic or plastic, depending on the amount of force applied. The limit of proportionality refers to the maximum stress that a material can withstand while still returning to its original shape once the force is removed. Beyond this point, the material will not return to its initial dimensions, leading to permanent deformation. To illustrate this concept, consider a rubber band. When you stretch a rubber band gently, it elongates, and when you release it, it returns to its original length. However, if you stretch it too far, beyond its limit of proportionality, the rubber band will not return to its original size; it will remain stretched. This behavior is crucial in many applications, from construction materials to everyday objects like toys. In engineering design, knowing the limit of proportionality is essential for ensuring safety and functionality. Engineers must select materials that can withstand expected loads without exceeding their limit of proportionality. For example, in building bridges, if the materials used exceed their limit of proportionality, the structure could fail, leading to catastrophic consequences. Thus, understanding this limit helps engineers create designs that are both safe and effective. Moreover, the limit of proportionality is not the same for all materials. Metals, for instance, have a well-defined limit of proportionality, which can be determined through tensile tests. These tests involve applying a controlled force to a sample until it deforms. The results help engineers know how much stress a metal can endure before it begins to yield. In contrast, materials like plastics may exhibit more complex behavior, where the limit of proportionality can vary significantly based on temperature and other environmental factors. In conclusion, the limit of proportionality is a critical concept in material science and engineering. It defines the threshold at which materials transition from elastic to plastic deformation. Understanding this limit enables engineers and designers to select appropriate materials and designs that ensure safety and durability. By respecting the limit of proportionality in their work, they can prevent failures and create structures that stand the test of time. As we continue to innovate and develop new materials, the importance of understanding the limit of proportionality will only grow, ensuring that our creations are both functional and safe for use in everyday life.

比例极限的概念在理解材料在应力下的行为中是基础性的。在物理学和工程学中，当对物体施加力时，它会变形。这种变形可以是弹性的或塑性的，具体取决于施加的力的大小。比例极限指的是一种材料在仍能在去除力后恢复到原始形状时所能承受的最大应力。超过这个点，材料将无法恢复到最初的尺寸，导致永久性变形。为了说明这一概念，可以考虑一个橡皮筋。当你轻轻拉伸橡皮筋时，它会延长，当你放开它时，它会恢复到原来的长度。然而，如果你拉得太远，超过了它的比例极限，橡皮筋将无法恢复到原来的大小；它将保持拉伸状态。这种行为在许多应用中至关重要，从建筑材料到日常物品，如玩具。在工程设计中，了解比例极限对于确保安全和功能性至关重要。工程师必须选择能够承受预期负荷而不超过其比例极限的材料。例如，在建造桥梁时，如果使用的材料超过了它们的比例极限，结构可能会失败，导致灾难性后果。因此，理解这个极限有助于工程师创建既安全又有效的设计。此外，比例极限并不是所有材料都相同。例如，金属具有明确的比例极限，可以通过拉伸试验来确定。这些测试涉及对样本施加控制力，直到它变形。结果帮助工程师了解金属在开始屈服之前可以承受多少应力。相比之下，塑料等材料可能表现出更复杂的行为，其中比例极限可能会根据温度和其他环境因素显著变化。总之，比例极限是材料科学和工程学中的一个关键概念。它定义了材料从弹性变为塑性变形的阈值。理解这一极限使工程师和设计师能够选择合适的材料和设计，以确保安全性和耐久性。通过尊重他们工作的比例极限，他们可以防止故障，并创造经得起时间考验的结构。随着我们继续创新和开发新材料，理解比例极限的重要性只会增加，确保我们的创造物在日常生活中既功能性强又安全。