combined creep

简明释义

综合蠕变

英英释义

例句

1.The engineers studied the effects of combined creep on the bridge's structural integrity over time.

工程师们研究了综合蠕变对桥梁结构完整性随时间变化的影响。

2.The combined creep of different materials can lead to unexpected results in construction projects.

不同材料的综合蠕变可能导致建筑项目中出现意想不到的结果。

3.The research focused on how combined creep affects polymer composites under stress.

该研究集中于综合蠕变如何影响受压聚合物复合材料。

4.In the analysis, combined creep was identified as a significant factor in material failure.

在分析中，综合蠕变被确定为材料失效的重要因素。

5.We need to account for combined creep when designing long-lasting structures.

在设计持久结构时，我们需要考虑综合蠕变。

作文

In the field of materials science and engineering, understanding the behavior of materials under stress is crucial. One phenomenon that researchers often study is known as combined creep, which refers to the deformation of materials over time when subjected to constant stress and temperature. This concept is particularly important in industries such as aerospace, civil engineering, and manufacturing, where materials must withstand significant loads and environmental conditions for extended periods. Combined creep can lead to structural failures if not properly accounted for, making it essential for engineers to understand its implications. Creep itself is a time-dependent deformation that occurs in materials, primarily metals and polymers, when they are exposed to high temperatures and sustained loads. The process of combined creep involves both primary and secondary creep stages. During the primary stage, the rate of creep decreases with time, while in the secondary stage, the rate becomes relatively constant. However, when additional factors such as varying temperatures, multi-axial stresses, or different loading conditions come into play, the behavior of the material can become complex. For example, consider a bridge made of steel that experiences both tensile and compressive forces due to traffic loads. The combination of these forces, along with the temperature fluctuations throughout the day, contributes to the combined creep of the steel components. Over time, this can result in noticeable deformations, which may compromise the integrity of the structure. Engineers must take these factors into account during the design phase to ensure safety and longevity. Moreover, the study of combined creep is not limited to just metals. Polymers, which are widely used in various applications, also exhibit creep behavior. In many cases, polymers can have significantly higher creep rates than metals, especially at elevated temperatures. This is critical to consider in products such as automotive parts, where plastic components may experience combined creep due to both mechanical stress from usage and thermal stress from engine heat. To predict and analyze combined creep, engineers utilize various models and testing methods. Finite element analysis (FEA) is one powerful tool that allows them to simulate how materials will behave under different loading conditions over time. By incorporating factors such as temperature changes and multi-directional stresses, FEA can provide insights into potential failure points and help in making informed design decisions. In conclusion, combined creep is a critical factor in the durability and reliability of materials used in engineering applications. Understanding this phenomenon helps engineers design safer structures and products that can withstand the test of time. As technology advances, the ability to accurately predict and analyze combined creep will continue to improve, leading to better material choices and engineering practices. The importance of this knowledge cannot be overstated, as it plays a vital role in ensuring the safety and functionality of countless structures and products in our daily lives.

在材料科学和工程领域，理解材料在应力下的行为至关重要。研究人员经常研究的一种现象被称为综合蠕变，它指的是材料在恒定应力和温度下随时间发生的变形。这个概念在航空航天、土木工程和制造等行业尤为重要，因为这些材料必须在长时间内承受显著的负荷和环境条件。综合蠕变如果没有适当考虑，可能导致结构失效，因此工程师必须理解其影响。蠕变本身是一种时间依赖性变形，发生在材料（主要是金属和聚合物）暴露于高温和持续负荷时。综合蠕变过程涉及初级和次级蠕变阶段。在初级阶段，蠕变速率随时间减少，而在次级阶段，速率则相对恒定。然而，当其他因素如温度变化、多轴应力或不同加载条件发挥作用时，材料的行为可能变得复杂。例如，考虑一座由钢制成的桥梁，它因交通负荷而经历拉伸和压缩力。这些力的组合，加上白天的温度波动，促成了钢组件的综合蠕变。随着时间的推移，这可能导致明显的变形，从而危及结构的完整性。工程师在设计阶段必须考虑这些因素，以确保安全性和耐久性。此外，综合蠕变的研究并不仅限于金属。聚合物在各种应用中广泛使用，也表现出蠕变行为。在许多情况下，聚合物的蠕变速率可能比金属高得多，尤其是在高温下。这在汽车零部件等产品中至关重要，因为塑料部件可能由于使用中的机械应力和发动机热量造成的热应力而经历综合蠕变。为了预测和分析综合蠕变，工程师利用各种模型和测试方法。有限元分析（FEA）是一个强大的工具，可以模拟材料在不同加载条件下随时间的行为。通过结合温度变化和多方向应力等因素，有限元分析可以提供潜在失效点的见解，并帮助做出明智的设计决策。总之，综合蠕变是工程应用中材料耐久性和可靠性的关键因素。理解这一现象有助于工程师设计出能够经受住时间考验的更安全的结构和产品。随着技术的进步，准确预测和分析综合蠕变的能力将持续提高，从而导致更好的材料选择和工程实践。这一知识的重要性不容小觑，因为它在确保我们日常生活中无数结构和产品的安全性和功能性方面发挥着至关重要的作用。