time dependent deformation

简明释义

与时间有关的变形

英英释义

例句

1.Understanding time dependent deformation 随时间变化的变形 is crucial for predicting the lifespan of materials in construction.

理解时间依赖性变形 随时间变化的变形 对于预测建筑材料的使用寿命至关重要。

2.In concrete structures, time dependent deformation 随时间变化的变形 can lead to cracking if not properly accounted for.

在混凝土结构中，时间依赖性变形 随时间变化的变形 如果没有得到适当考虑，可能会导致开裂。

3.The engineer explained that the material exhibits time dependent deformation 随时间变化的变形 under prolonged stress.

工程师解释说，该材料在长期应力下表现出时间依赖性变形 随时间变化的变形。

4.The study revealed that time dependent deformation 随时间变化的变形 significantly affects the performance of geosynthetics.

研究显示，时间依赖性变形 随时间变化的变形 显著影响了土工合成材料的性能。

5.The research focused on time dependent deformation 随时间变化的变形 of polymers at elevated temperatures.

研究集中在高温下聚合物的时间依赖性变形 随时间变化的变形。

作文

Time-dependent deformation is a crucial concept in the field of materials science and engineering. It refers to the phenomenon where materials deform over time when subjected to constant load or stress. This behavior is particularly significant in polymers, metals, and concrete, where the mechanical properties can change as time progresses. Understanding time dependent deformation (时间依赖性变形) is essential for predicting how materials will perform in real-world applications.One of the primary reasons that time dependent deformation occurs is due to the viscoelastic nature of certain materials. Viscoelastic materials exhibit both viscous and elastic characteristics when undergoing deformation. For example, when a polymer is stretched, it may initially respond elastically, returning to its original shape once the load is removed. However, if the load is maintained over time, the material may begin to flow, resulting in permanent deformation. This behavior is critical to consider in applications such as automotive components, where materials are often subjected to long-term stress.Another important aspect of time dependent deformation is its relevance in structural engineering. Engineers must account for this phenomenon when designing structures that will bear loads over extended periods. For instance, concrete structures experience creep, a type of time dependent deformation that causes the material to slowly deform under sustained load. This can lead to significant changes in the structure's integrity and safety if not properly managed.In addition to creep, there is also a phenomenon known as relaxation, which is another form of time dependent deformation. When a material is suddenly deformed and held at a fixed strain, the stress within the material decreases over time. This is particularly relevant in applications where materials are expected to maintain a specific shape under load, such as in seals or gaskets. Understanding the mechanisms behind these behaviors allows engineers to select appropriate materials and design strategies to mitigate potential issues.To effectively manage time dependent deformation, engineers often employ various testing methods to characterize the behavior of materials under different loading conditions. Tests such as creep tests and stress relaxation tests provide valuable data that can be used to model and predict material performance over time. By developing accurate models based on these tests, engineers can ensure that their designs will withstand the test of time without experiencing excessive deformation.In conclusion, time dependent deformation (时间依赖性变形) is a fundamental concept that plays a vital role in materials science and engineering. Its implications are far-reaching, affecting everything from the selection of materials to the design of structures. As technology advances and new materials are developed, understanding time dependent deformation will continue to be essential for engineers to create safe, reliable, and durable products. By considering the time-dependent behavior of materials, we can better predict their performance and ensure they meet the demands of modern applications.