permanent deformation

简明释义

永久性变形

英英释义

例句

1.Engineers must consider permanent deformation 永久变形 when designing structures to ensure safety.

工程师在设计结构时必须考虑永久变形 永久变形以确保安全。

2.The plastic container lost its shape due to permanent deformation 永久变形 from high temperatures.

由于高温导致塑料容器发生了永久变形 永久变形，失去了原有的形状。

3.In geology, rocks can undergo permanent deformation 永久变形 under extreme pressure.

在地质学中，岩石在极端压力下可以发生永久变形 永久变形。

4.The rubber band exhibited permanent deformation 永久变形 after being stretched too far.

橡皮筋在被拉伸过度后表现出永久变形 永久变形。

5.After the heavy load was removed, the metal beam showed signs of permanent deformation 永久变形.

在重物被移除后，金属梁显示出永久变形 永久变形的迹象。

作文

In the field of materials science and engineering, understanding the concept of permanent deformation is crucial for evaluating how materials behave under stress. Permanent deformation refers to the irreversible change in shape or size of a material after the removal of applied stress. This phenomenon occurs when the applied stress exceeds the material's yield strength, leading to a change that cannot be undone. It is essential to differentiate between elastic and plastic deformation; while elastic deformation is temporary and the material returns to its original shape once the load is removed, permanent deformation signifies a lasting alteration. Materials exhibit different responses to stress depending on their composition and structure. For instance, metals tend to show permanent deformation more readily than ceramics or glass. When a metal is subjected to forces beyond its yield point, it will undergo plastic deformation, resulting in a new shape that remains even after the force is no longer applied. This property is particularly important in manufacturing processes such as forging and machining, where the desired shape of a component is achieved through controlled deformation.The implications of permanent deformation are significant in various applications. For example, in civil engineering, understanding how materials will respond to loads over time can impact the safety and longevity of structures. If a building material experiences permanent deformation, it may lead to structural failures or safety hazards. Therefore, engineers must consider factors such as load limits and environmental conditions to ensure that materials used in construction will not exceed their yield strength during their service life.In addition to structural applications, permanent deformation plays a role in everyday items. Think about a plastic bottle that has been squeezed; once released, it may not return to its original shape due to permanent deformation. This behavior is a result of the polymer chains within the plastic becoming rearranged under stress. Such knowledge helps manufacturers design products that can withstand certain stresses without failing, thus enhancing durability and performance.Moreover, the study of permanent deformation extends into the realm of geology. Rocks experience this phenomenon under immense pressure over geological time scales, leading to the formation of faults and folds in the Earth's crust. Understanding how rocks deform permanently informs geologists about past tectonic movements and helps predict future geological activity. In conclusion, permanent deformation is a fundamental concept that transcends various fields, from engineering to geology. Recognizing the conditions under which materials undergo permanent deformation allows scientists and engineers to create safer, more efficient designs and predict the behavior of natural systems. As we continue to explore and innovate within these disciplines, the principles surrounding permanent deformation will remain integral to our understanding of material behavior and its implications in the real world.

在材料科学和工程领域，理解“永久变形”的概念对于评估材料在应力下的行为至关重要。“永久变形”是指在施加的应力去除后，材料形状或尺寸的不可逆变化。这种现象发生在施加的应力超过材料的屈服强度时，导致无法恢复的变化。必须区分弹性变形和塑性变形；虽然弹性变形是暂时的，材料在负载去除后会恢复到原始形状，但“永久变形”则意味着持久的改变。材料对应力的响应因其成分和结构而异。例如，金属比陶瓷或玻璃更容易出现“永久变形”。当金属受到超出其屈服点的力量时，它将经历塑性变形，从而形成即使在力量不再施加时也会保持的新形状。这一特性在锻造和机械加工等制造过程中尤其重要，在这些过程中，通过控制变形来实现组件的所需形状。“永久变形”的影响在各种应用中都很重要。例如，在土木工程中，理解材料在时间推移下如何响应负载可以影响结构的安全性和耐久性。如果建筑材料经历了“永久变形”，可能会导致结构失效或安全隐患。因此，工程师必须考虑负载限制和环境条件，以确保用于建筑的材料在其使用寿命内不会超过其屈服强度。除了结构应用外，“永久变形”在日常物品中也发挥着作用。想想一个被挤压的塑料瓶；释放后，由于“永久变形”，它可能不会恢复到原始形状。这种行为是由于塑料中的聚合物链在应力下重新排列造成的。这种知识帮助制造商设计能够承受一定应力而不失败的产品，从而增强耐用性和性能。此外，“永久变形”的研究延伸到地质学领域。岩石在地质时间尺度上经历这一现象，在巨大的压力下导致地壳中的断层和褶皱的形成。理解岩石如何永久变形使地质学家能够了解过去的构造运动，并帮助预测未来的地质活动。总之，“永久变形”是一个基本概念，跨越多个领域，从工程到地质学。认识到材料在何种条件下会经历“永久变形”使科学家和工程师能够创造更安全、更高效的设计，并预测自然系统的行为。随着我们在这些学科中继续探索和创新，围绕“永久变形”的原则将仍然是我们理解材料行为及其在现实世界中的影响的核心。