creep coefficient

简明释义

蠕变系数

英英释义

例句

1.To evaluate the performance of polymers, scientists measure the creep coefficient under various conditions.

为了评估聚合物的性能，科学家在不同条件下测量蠕变系数。

2.The creep coefficient is crucial for predicting the long-term deformation of concrete structures.

该蠕变系数对于预测混凝土结构的长期变形至关重要。

3.A higher creep coefficient indicates that the material will deform more under sustained load.

更高的蠕变系数表明材料在持续负载下会变形更多。

4.Engineers must consider the creep coefficient when designing bridges to ensure safety over time.

工程师在设计桥梁时必须考虑蠕变系数以确保安全性。

5.The creep coefficient of asphalt is important for road construction and maintenance.

沥青的蠕变系数对道路建设和维护非常重要。

作文

In the field of materials science and engineering, understanding the properties of materials under stress is crucial for designing structures that can withstand various loads over time. One important concept in this domain is the creep coefficient, which quantifies how a material deforms under a constant load over an extended period. This property is particularly significant for materials used in construction, such as concrete and metals, which are often subjected to long-term stresses. The creep coefficient is defined as the ratio of the creep strain to the elastic strain produced by an applied load. Creep strain refers to the gradual, time-dependent deformation that occurs when a material is subjected to a constant stress, while elastic strain is the immediate deformation that disappears once the load is removed. Understanding the relationship between these two types of strain is essential for engineers to predict how materials will behave under sustained loads.One of the primary factors influencing the creep coefficient is temperature. Higher temperatures generally lead to increased creep rates in materials, as the thermal energy allows atoms within the material to move more freely, resulting in greater deformation. For instance, in hot climates, concrete structures may experience higher creep rates, which could affect their integrity over time. Therefore, engineers must consider environmental conditions when assessing the long-term performance of materials.Another critical aspect is the duration of the applied load. The longer a material is subjected to stress, the more pronounced the creep deformation will be. This phenomenon is particularly relevant in structures like bridges or high-rise buildings, where components are expected to endure substantial loads for many years. Engineers often use the creep coefficient to estimate how much a beam or column will deflect over time, ensuring that safety standards are met and that the structure remains functional.The creep coefficient can also vary between different materials. For example, metals typically have lower creep coefficients compared to polymers, meaning they deform less under similar loads. This difference is due to the molecular structure and bonding forces present in each material. By understanding these variations, engineers can select appropriate materials for specific applications, optimizing performance and longevity.In practical applications, the creep coefficient is often determined through standardized testing methods, which involve applying a constant load to a sample material and measuring its deformation over time. The results from these tests help create models that predict how materials will behave in real-world conditions. Such models are invaluable for ensuring the safety and reliability of structures, especially in critical infrastructure projects.In conclusion, the creep coefficient is a vital parameter in materials science that helps engineers understand and predict the long-term behavior of materials under sustained loads. By comprehensively studying this coefficient, engineers can design safer and more durable structures, ultimately contributing to the advancement of civil engineering and construction practices. As we continue to develop new materials and technologies, the importance of accurately measuring and interpreting the creep coefficient will only grow, ensuring that our built environment remains safe and resilient for future generations.

在材料科学和工程领域，理解材料在应力下的特性对于设计能够承受各种负载的结构至关重要。一个重要的概念是蠕变系数，它量化了材料在长时间施加恒定负载下的变形。这一特性对于建筑中使用的材料，尤其是混凝土和金属，具有特别重要的意义，因为这些材料通常会受到长期的应力影响。蠕变系数被定义为蠕变应变与由施加负载产生的弹性应变之间的比率。蠕变应变指的是当材料在恒定应力下逐渐发生的时间依赖性变形，而弹性应变则是施加负载后立即发生的变形，一旦负载被移除就会消失。理解这两种应变之间的关系对工程师预测材料在持续负载下的行为至关重要。影响蠕变系数的主要因素之一是温度。较高的温度通常会导致材料的蠕变速率增加，因为热能使材料内部的原子可以更自由地移动，从而导致更大的变形。例如，在炎热的气候中，混凝土结构可能会经历更高的蠕变速率，这可能会影响其长期的完整性。因此，工程师在评估材料的长期性能时，必须考虑环境条件。另一个关键方面是施加负载的持续时间。材料在应力下的时间越长，蠕变变形就会越明显。这一现象在桥梁或高层建筑等结构中特别相关，因为这些构件预计会在许多年内承受相当大的负载。工程师通常使用蠕变系数来估算梁或柱在时间上的挠曲程度，以确保满足安全标准，并保持结构的功能性。不同材料之间的蠕变系数也可能有所不同。例如，与聚合物相比，金属通常具有较低的蠕变系数，这意味着在相似负载下，它们的变形较小。这种差异是由于每种材料的分子结构和结合力的不同。通过理解这些变化，工程师可以为特定应用选择合适的材料，优化性能和耐久性。在实际应用中，蠕变系数通常通过标准化测试方法来确定，这涉及对样本材料施加恒定负载并测量其随时间的变形。这些测试的结果有助于创建模型，以预测材料在现实条件下的行为。这些模型对于确保结构的安全性和可靠性至关重要，尤其是在关键基础设施项目中。总之，蠕变系数是材料科学中的一个重要参数，帮助工程师理解和预测材料在持续负载下的长期行为。通过全面研究这一系数，工程师可以设计出更安全、更耐用的结构，最终促进土木工程和建筑实践的发展。随着我们继续开发新材料和新技术，准确测量和解释蠕变系数的重要性只会增加，确保我们建造的环境在未来世代中保持安全和韧性。