creep deformation

简明释义

蠕变

英英释义

例句

1.The engineers conducted tests to measure the creep deformation 蠕变变形 of the material under high temperatures.

工程师进行了测试，以测量材料在高温下的creep deformation 蠕变变形。

2.Researchers are studying creep deformation 蠕变变形 in metals to improve their durability.

研究人员正在研究金属中的creep deformation 蠕变变形 以提高其耐用性。

3.Over time, the creep deformation 蠕变变形 in the bridge's support beams raised safety concerns.

随着时间的推移，桥梁支撑梁中的creep deformation 蠕变变形 引发了安全隐患。

4.Understanding creep deformation 蠕变变形 is crucial for predicting the lifespan of structural components.

理解creep deformation 蠕变变形 对于预测结构组件的使用寿命至关重要。

5.The creep deformation 蠕变变形 of plastics can significantly affect their performance in various applications.

塑料的creep deformation 蠕变变形 可以显著影响其在各种应用中的性能。

作文

Creep deformation is a critical concept in materials science and engineering, particularly when dealing with high-temperature applications. This phenomenon refers to the gradual and time-dependent deformation of materials under constant stress. As materials are subjected to prolonged loading, they tend to deform slowly over time, even if the applied stress is below the yield strength of the material. Understanding creep deformation (蠕变变形) is essential for engineers and designers, as it can significantly affect the performance and longevity of components in various industries, including aerospace, automotive, and civil engineering.One of the key factors that influence creep deformation (蠕变变形) is temperature. At elevated temperatures, materials typically exhibit increased atomic mobility, which allows dislocations to move more freely. This increased mobility leads to a more pronounced creep response. For instance, in turbine engines, where materials are exposed to extreme heat, understanding creep deformation (蠕变变形) is crucial for ensuring the safety and reliability of engine components. Engineers must select materials that can withstand these conditions without experiencing excessive deformation over time.The mechanics of creep deformation (蠕变变形) can be divided into three primary stages: primary creep, secondary creep, and tertiary creep. Primary creep is characterized by a rapid initial deformation that slows down over time. In contrast, secondary creep occurs at a relatively steady rate and is often the stage of interest for long-term applications. Finally, tertiary creep involves an accelerated rate of deformation leading to failure. By understanding these stages, engineers can predict the lifespan of materials under specific loading conditions and make informed decisions about material selection and design.Moreover, the effects of creep deformation (蠕变变形) can be mitigated through various strategies. One common approach is to use materials with higher creep resistance, such as superalloys or ceramics, which maintain their structural integrity under high-stress and high-temperature conditions. Additionally, engineers can design components with geometries that minimize stress concentrations, thereby reducing the likelihood of significant creep deformation (蠕变变形). In conclusion, creep deformation (蠕变变形) is an important consideration in the design and analysis of materials used in high-temperature and high-stress environments. By understanding the mechanisms and factors influencing this phenomenon, engineers can better predict material behavior, enhance the durability of components, and ultimately improve the safety and efficiency of various applications. As technology continues to advance, the study of creep deformation (蠕变变形) will remain a vital area of research, ensuring that materials can meet the demands of increasingly complex engineering challenges.

蠕变变形是材料科学和工程中的一个关键概念，特别是在处理高温应用时。这个现象指的是材料在恒定应力下逐渐且随时间变化的变形。当材料受到长期加载时，即使施加的应力低于材料的屈服强度，它们也会随着时间的推移而变形。理解creep deformation（蠕变变形）对于工程师和设计师至关重要，因为它可能显著影响各种行业中组件的性能和寿命，包括航空航天、汽车和土木工程。影响creep deformation（蠕变变形）的一个关键因素是温度。在高温下，材料通常表现出更高的原子运动性，这使得位错可以更自由地移动。这种运动性的增加导致了更明显的蠕变响应。例如，在涡轮发动机中，材料暴露在极端热量下，理解creep deformation（蠕变变形）对确保发动机组件的安全性和可靠性至关重要。工程师必须选择能够在这些条件下承受而不经历过度变形的材料。creep deformation（蠕变变形）的力学可以分为三个主要阶段：初级蠕变、次级蠕变和三级蠕变。初级蠕变的特征是快速的初始变形，随后速度减缓。相反，次级蠕变以相对稳定的速率发生，通常是长期应用中的关注阶段。最后，三级蠕变涉及加速的变形速率，导致失效。通过理解这些阶段，工程师可以预测材料在特定加载条件下的使用寿命，并就材料选择和设计做出明智的决策。此外，可以通过各种策略来减轻creep deformation（蠕变变形）的影响。一个常见的方法是使用具有更高蠕变抗力的材料，如超级合金或陶瓷，这些材料在高应力和高温条件下保持其结构完整性。此外，工程师可以设计具有最小化应力集中几何形状的组件，从而降低显著creep deformation（蠕变变形）的可能性。总之，creep deformation（蠕变变形）是设计和分析高温和高应力环境中使用的材料时的重要考虑因素。通过了解影响这一现象的机制和因素，工程师可以更好地预测材料的行为，提高组件的耐久性，并最终改善各种应用的安全性和效率。随着技术的不断进步，对creep deformation（蠕变变形）的研究将继续是一个重要的研究领域，确保材料能够满足日益复杂的工程挑战的需求。