dynamic modulus

简明释义

动态模量

英英释义

例句

1.In pavement design, the dynamic modulus helps determine the thickness required for optimal performance.

在路面设计中，动态模量有助于确定最佳性能所需的厚度。

2.A higher dynamic modulus indicates a stiffer material, which is beneficial for load-bearing applications.

更高的动态模量表明材料更坚硬，这对于承载应用是有益的。

3.The dynamic modulus is crucial in evaluating the performance of asphalt mixtures under varying temperatures.

在评估沥青混合料在不同温度下的性能时，动态模量是至关重要的。

4.Engineers often measure the dynamic modulus to predict how materials will behave under stress.

工程师们常常测量动态模量以预测材料在应力下的表现。

5.The laboratory tests showed that the dynamic modulus of the polymer-modified asphalt was significantly higher.

实验室测试表明，聚合物改性沥青的动态模量显著提高。

作文

In the field of materials science and engineering, understanding the properties of materials is crucial for various applications. One such property that plays a significant role in determining the behavior of materials under different conditions is the dynamic modulus. The dynamic modulus refers to the measure of a material's stiffness when subjected to dynamic loading, which means it evaluates how a material responds to forces that vary with time. This property is particularly important in applications where materials are exposed to fluctuating loads, such as in construction, automotive, and aerospace industries.To understand the dynamic modulus more clearly, it is essential to differentiate it from other types of modulus, such as the static modulus. While the static modulus measures a material's stiffness under a constant load, the dynamic modulus accounts for the material's response to changing loads. This distinction is vital because many materials do not behave linearly when subjected to dynamic forces. For example, rubber exhibits a significantly different dynamic modulus compared to its static modulus due to its viscoelastic nature, which allows it to absorb energy and deform under stress.The significance of the dynamic modulus extends beyond theoretical understanding; it has practical implications in design and engineering. Engineers must consider this property when selecting materials for specific applications. For instance, in the construction of bridges or buildings, the dynamic modulus helps predict how the structure will respond to environmental factors like wind, earthquakes, or traffic loads. A material with an appropriate dynamic modulus ensures that the structure can withstand these dynamic forces without failing.Moreover, the dynamic modulus is also crucial in the field of pavement engineering. Asphalt and concrete are commonly used materials in road construction, and their performance under traffic loads is critical for durability and safety. By measuring the dynamic modulus of these materials, engineers can evaluate how well they will perform over time, ensuring that roads remain safe and functional despite the wear and tear caused by vehicles.Testing for dynamic modulus typically involves dynamic mechanical analysis (DMA), which applies oscillatory stress to a sample and measures its resulting strain. This method provides valuable data on the material's viscoelastic properties, enabling engineers to make informed decisions about material selection and design.In conclusion, the dynamic modulus is a fundamental property that significantly influences the behavior of materials under dynamic loading conditions. Understanding this property allows engineers and scientists to predict how materials will perform in real-world applications, leading to safer and more efficient designs. As technology advances and new materials are developed, the importance of accurately measuring and interpreting the dynamic modulus will only continue to grow, highlighting the need for ongoing research and innovation in this field.

在材料科学和工程领域，理解材料的特性对于各种应用至关重要。一个在不同条件下决定材料行为的重要特性是动态模量。动态模量是指材料在动态加载下的刚度测量，这意味着它评估材料在随时间变化的力作用下的响应。这一特性在材料暴露于波动载荷的应用中尤为重要，例如在建筑、汽车和航空航天工业中。为了更清楚地理解动态模量，有必要将其与其他类型的模量区分开来，例如静态模量。静态模量测量材料在恒定载荷下的刚度，而动态模量则考虑材料对变化载荷的响应。这一区别至关重要，因为许多材料在受到动态力时并不表现出线性行为。例如，橡胶在其静态模量与动态模量之间表现出显著差异，这是由于其粘弹性特性，使其能够在应力下吸收能量和变形。动态模量的重要性不仅限于理论理解；它在设计和工程中具有实际意义。工程师在选择特定应用的材料时必须考虑这一特性。例如，在桥梁或建筑物的施工中，动态模量有助于预测结构如何响应风、地震或交通载荷等环境因素。具有适当动态模量的材料可确保结构在承受这些动态力时不会失效。此外，动态模量在路面工程领域也至关重要。沥青和混凝土是道路施工中常用的材料，它们在交通载荷下的性能对耐久性和安全性至关重要。通过测量这些材料的动态模量，工程师可以评估它们在时间推移中的表现，确保道路在车辆造成的磨损和撕裂下保持安全和功能。动态模量的测试通常涉及动态机械分析（DMA），该方法对样品施加振荡应力并测量其产生的应变。此方法提供了有关材料粘弹性特性的宝贵数据，使工程师能够就材料选择和设计做出明智的决策。总之，动态模量是一个基本特性，对材料在动态加载条件下的行为有重大影响。理解这一特性使工程师和科学家能够预测材料在现实应用中的表现，从而导致更安全、更高效的设计。随着技术的发展和新材料的开发，准确测量和解释动态模量的重要性只会继续增长，突显了在这一领域持续研究和创新的必要性。