dynamic modulus

简明释义

动力模量

英英释义

例句

1.A higher dynamic modulus 动态模量 indicates better resistance to deformation in materials used for road construction.

较高的动态模量 动态模量表明用于道路建设的材料对变形的抵抗能力更强。

2.The dynamic modulus 动态模量 of soil can be crucial for assessing the stability of foundations.

土壤的动态模量 动态模量对于评估基础的稳定性至关重要。

3.The engineer measured the dynamic modulus 动态模量 of the asphalt to determine its performance under traffic loads.

工程师测量了沥青的动态模量 动态模量以确定其在交通荷载下的性能。

4.In seismic analysis, the dynamic modulus 动态模量 of materials helps predict how structures will respond to earthquakes.

在地震分析中，材料的动态模量 动态模量有助于预测结构对地震的反应。

5.Researchers are studying the dynamic modulus 动态模量 of different concrete mixtures to enhance durability.

研究人员正在研究不同混凝土配合比的动态模量 动态模量以提高耐久性。

作文

The concept of dynamic modulus is crucial in the field of materials science and engineering, particularly when analyzing the behavior of materials under varying conditions. In essence, dynamic modulus refers to the measure of a material's stiffness or resistance to deformation when subjected to dynamic loads, which are loads that change over time, such as vibrations or impacts. This property is especially important for materials used in construction, automotive, and aerospace industries where materials often experience fluctuating forces.To better understand dynamic modulus, it is essential to differentiate it from static modulus, which measures the stiffness of a material under constant load. While static modulus provides insight into how a material behaves under steady conditions, dynamic modulus offers a more comprehensive understanding of material performance under real-world conditions where loads are not constant. For instance, when a bridge is subjected to traffic loads, the forces acting on it change continuously, and understanding its dynamic modulus helps engineers predict how it will perform over time.One of the primary methods for determining dynamic modulus is through dynamic mechanical analysis (DMA). This technique involves applying a sinusoidal stress to a material and measuring its resulting strain. By analyzing the relationship between stress and strain, engineers can derive the dynamic modulus and assess the material's viscoelastic properties. This information is critical for selecting appropriate materials for specific applications, as it helps predict how materials will behave under different loading conditions.Furthermore, the dynamic modulus can vary significantly with temperature and frequency of loading. For example, rubber-like materials exhibit a much lower dynamic modulus at elevated temperatures compared to their performance at lower temperatures. This temperature dependency is vital for applications like tire manufacturing, where the material must maintain flexibility and strength under varying thermal conditions.In addition to its technical definitions, the dynamic modulus has practical implications in everyday life. For instance, when designing sports equipment, manufacturers must consider the dynamic modulus of materials to ensure optimal performance and safety. A tennis racket, for example, needs to have the right balance of stiffness and flexibility to enhance player control while absorbing shock during impact with the ball.Moreover, advancements in technology have allowed for the development of new materials with tailored dynamic modulus properties. Researchers are exploring composites and smart materials that can adapt their stiffness based on external stimuli, such as temperature changes or applied loads. These innovations could revolutionize various industries by creating materials that are not only lightweight and strong but also responsive to their environments.In conclusion, the dynamic modulus is a fundamental property that plays a significant role in material selection and structural design across numerous industries. Understanding this concept allows engineers and scientists to develop safer, more efficient materials and structures capable of withstanding the complexities of dynamic loading conditions. As research continues to evolve, the importance of the dynamic modulus will only grow, paving the way for innovative solutions to engineering challenges in the future.

动态模量的概念在材料科学和工程领域中至关重要，特别是在分析材料在不同条件下的行为时。简单来说，动态模量是指材料在受到动态载荷（即随时间变化的载荷，如振动或冲击）时的刚度或抵抗变形的能力的量度。这一特性对于建筑、汽车和航空航天等行业中使用的材料尤为重要，因为这些材料经常会经历变化的力。为了更好地理解动态模量，有必要将其与静态模量区分开来，后者测量材料在恒定载荷下的刚度。虽然静态模量提供了材料在稳定条件下表现的见解，但动态模量则提供了对材料在真实世界条件下性能的更全面理解，因为在这些条件下，载荷并不是恒定的。例如，当桥梁受到交通载荷时，作用于其上的力会不断变化，而了解其动态模量有助于工程师预测其随时间的表现。确定动态模量的主要方法之一是通过动态机械分析（DMA）。该技术涉及对材料施加正弦应力并测量其产生的应变。通过分析应力与应变之间的关系，工程师可以推导出动态模量并评估材料的粘弹性特性。这些信息对于选择特定应用的适当材料至关重要，因为它有助于预测材料在不同加载条件下的表现。此外，动态模量可能会随着温度和加载频率的变化而显著变化。例如，橡胶类材料在高温下的动态模量明显低于低温下的表现。这种温度依赖性对于轮胎制造等应用至关重要，因为材料必须在不同热条件下保持灵活性和强度。除了其技术定义外，动态模量在日常生活中也具有实际意义。例如，在设计运动器材时，制造商必须考虑材料的动态模量以确保最佳性能和安全性。例如，网球拍需要具有适当的刚度和灵活性的平衡，以增强球员的控制能力，同时在与球接触时吸收冲击。此外，技术的进步使得开发具有特定动态模量特性的材料成为可能。研究人员正在探索复合材料和智能材料，这些材料可以根据外部刺激（如温度变化或施加的载荷）调整其刚度。这些创新可能会通过创造不仅轻巧且坚固的材料，还能对其环境做出反应，从而彻底改变各个行业。总之，动态模量是一个基本属性，在众多行业的材料选择和结构设计中发挥着重要作用。理解这一概念使工程师和科学家能够开发出更安全、更高效的材料和结构，能够承受动态加载条件的复杂性。随着研究的不断发展，动态模量的重要性只会增加，为未来工程挑战的创新解决方案铺平道路。