stresses in the plastic range

简明释义

塑性范围内应力

英英释义

例句

1.The engineer calculated the maximum load to ensure that the structure would not experience stresses in the plastic range 塑性范围内的应力 during an earthquake.

工程师计算了最大载荷，以确保结构在地震期间不会经历塑性范围内的应力。

2.The design specifications included limits to prevent stresses in the plastic range 塑性范围内的应力 during normal operation.

设计规范包括限制，以防止在正常操作期间出现塑性范围内的应力。

3.When analyzing the failure of materials, we often look for signs of stresses in the plastic range 塑性范围内的应力 that indicate yielding.

在分析材料的失效时，我们通常寻找表明屈服的塑性范围内的应力的迹象。

4.During the tensile test, we observed that the material began to exhibit stresses in the plastic range 塑性范围内的应力 after reaching its yield point.

在拉伸测试中，我们观察到材料在达到屈服点后开始表现出塑性范围内的应力。

5.In metal forming processes, it is crucial to manage stresses in the plastic range 塑性范围内的应力 to achieve the desired shape without failure.

在金属成形过程中，管理塑性范围内的应力是至关重要的，以实现所需的形状而不发生故障。

作文

In the field of materials science and engineering, understanding the behavior of materials under various stress conditions is crucial. One important concept in this domain is stresses in the plastic range, which refers to the stress levels at which a material undergoes permanent deformation. When a material is subjected to forces, it initially responds elastically, meaning it will return to its original shape once the load is removed. However, as the applied stress increases and reaches a certain threshold, known as the yield strength, the material enters the plastic range.

During this phase, the material does not return to its original form after the load is taken away. Instead, it experiences a change in shape that remains even when the stress is no longer applied. This irreversible deformation occurs because the atomic structure of the material has been altered at a fundamental level. Understanding stresses in the plastic range is essential for engineers and designers, as it helps them predict how materials will behave in real-world applications.

For instance, consider the design of a bridge. Engineers must ensure that the materials used can withstand the loads imposed by vehicles and environmental factors without entering the plastic range under normal operating conditions. If the stresses exceed the yield strength, the materials could deform permanently, leading to catastrophic failure. Therefore, calculating the expected loads and understanding the material properties, including stresses in the plastic range, are critical steps in the design process.

Moreover, different materials exhibit varying behaviors under stress. Metals, for instance, typically have a well-defined yield point, making it easier to determine when they will begin to experience stresses in the plastic range. On the other hand, polymers may not have a clear yield point and can behave differently depending on the temperature and strain rate. This variability necessitates thorough testing and analysis to ensure safety and reliability in engineering applications.

Another important aspect to consider is the influence of temperature on stresses in the plastic range. As temperature increases, many materials become more ductile, allowing them to undergo greater deformations before reaching their yield strength. This property can be advantageous in applications where materials are subjected to high temperatures, such as in aerospace or automotive industries. Conversely, some materials may become brittle at lower temperatures, leading to sudden failures if they experience stresses in the plastic range.

In conclusion, comprehending stresses in the plastic range is vital for anyone involved in material selection and structural design. By understanding how materials behave under different stress conditions, engineers can make informed decisions that enhance the safety and performance of their designs. As technology advances and new materials are developed, the study of these stresses will continue to play a pivotal role in engineering innovation and safety.

在材料科学和工程领域，理解材料在各种应力条件下的行为至关重要。一个重要的概念是塑性范围内的应力，它指的是材料经历永久变形的应力水平。当材料受到力的作用时，它最初会以弹性方式响应，这意味着一旦负载被移除，它将恢复到原来的形状。然而，随着施加的应力增加并达到某个阈值，即屈服强度，材料进入塑性范围。

在这个阶段，材料在去除负载后不会返回到其原始形状。相反，它会经历一种保持的形状变化，即使在不再施加应力时也是如此。这种不可逆的变形发生是因为材料的原子结构在基本层面上发生了改变。理解塑性范围内的应力对于工程师和设计师至关重要，因为它帮助他们预测材料在现实应用中的行为。

例如，考虑桥梁的设计。工程师必须确保所用材料能够承受车辆和环境因素施加的负载，而不会在正常操作条件下进入塑性范围。如果应力超过屈服强度，材料可能会发生永久变形，导致灾难性故障。因此，计算预期负载和理解材料特性，包括塑性范围内的应力，是设计过程中的关键步骤。

此外，不同材料在应力下表现出不同的行为。例如，金属通常具有明确的屈服点，使得确定何时开始经历塑性范围内的应力变得更容易。另一方面，聚合物可能没有明确的屈服点，并且可能根据温度和应变速率表现出不同的行为。这种变异性需要进行彻底的测试和分析，以确保工程应用的安全性和可靠性。

另一个重要的方面是温度对塑性范围内的应力的影响。随着温度的升高，许多材料变得更加韧性，使它们在达到屈服强度之前可以经历更大的变形。这种特性在航空航天或汽车工业等高温应用中可能是有利的。相反，一些材料在较低温度下可能变得脆弱，如果它们经历塑性范围内的应力，可能会导致突然的故障。

总之，理解塑性范围内的应力对于任何参与材料选择和结构设计的人来说都是至关重要的。通过理解材料在不同应力条件下的行为，工程师可以做出明智的决策，从而提高其设计的安全性和性能。随着技术的进步和新材料的发展，这些应力的研究将继续在工程创新和安全中发挥关键作用。