hysteresis curve

简明释义

磁滞曲线

英英释义

例句

1.Engineers use the hysteresis curve to analyze the performance of magnetic materials.

工程师使用滞后曲线来分析磁性材料的性能。

2.The hysteresis curve shows the difference in response of a material when it is subjected to increasing and decreasing stress.

这个滞后曲线显示了材料在施加增大和减小应力时的反应差异。

3.In thermodynamics, the hysteresis curve illustrates the energy loss during phase changes.

在热力学中，滞后曲线说明了相变过程中的能量损失。

4.The hysteresis curve for rubber materials demonstrates their elasticity and plasticity.

橡胶材料的滞后曲线展示了它们的弹性和塑性。

5.The hysteresis curve can help predict how a system will behave under cyclic loading.

这个滞后曲线可以帮助预测系统在循环载荷下的行为。

作文

The concept of a hysteresis curve is fundamental in various fields of science and engineering, particularly in the study of materials and their behaviors under different conditions. A hysteresis curve illustrates the relationship between two variables, typically a force or stress applied to a material and the resultant deformation or strain it experiences. This phenomenon occurs due to the inherent properties of materials, which do not respond linearly to applied forces. To better understand the hysteresis curve, one can think of how a rubber band behaves when stretched. When you pull on a rubber band, it stretches, and when you release it, it returns to its original shape. However, if you stretch it beyond a certain point, the rubber band may not return entirely to its initial length. This behavior is indicative of hysteresis, where the path taken during loading (stretching) differs from the path taken during unloading (relaxing). The graphical representation of this process forms a loop, known as the hysteresis curve. In physics, the hysteresis curve is often used to describe magnetic materials. When a magnetic field is applied to a ferromagnetic material, it becomes magnetized. Upon removing the magnetic field, the material does not immediately lose its magnetization. Instead, it retains some magnetism, demonstrating a lag in response that creates a loop on the graph of magnetic field strength versus magnetization. This loop is the hysteresis curve, and it provides valuable information about the material's properties, such as coercivity and remanence. In engineering, the hysteresis curve is crucial for understanding the behavior of systems subjected to cyclic loading. For instance, in structural engineering, materials like steel exhibit hysteresis when subjected to repeated stress cycles. The energy dissipated during these cycles can be quantified using the area within the hysteresis curve. This is particularly important in designing structures that must withstand dynamic loads, such as bridges and buildings in earthquake-prone areas. Moreover, the hysteresis curve is significant in thermodynamics, especially in phase transitions. For example, when heating a substance, it may undergo a change from solid to liquid. The temperature at which this occurs can depend on whether the substance is being heated or cooled, leading to a hysteresis curve that delineates the temperatures at which phase changes occur in both directions. This concept has applications in various industries, including food processing and materials science, where controlling temperature is vital for product quality. In conclusion, the hysteresis curve is a powerful tool for visualizing and understanding the complex behaviors of materials and systems under varying conditions. By studying these curves, scientists and engineers can make informed decisions regarding material selection, structural design, and process optimization. The implications of hysteresis extend far beyond simple mechanical systems, influencing diverse fields such as physics, engineering, and materials science. As our understanding of these curves deepens, so too does our ability to innovate and improve technologies across numerous applications. Understanding the hysteresis curve is not just an academic exercise; it is a practical necessity in ensuring the reliability and efficiency of countless systems and materials that we encounter in our daily lives. In summary, the hysteresis curve (滞后曲线) serves as a critical representation of how materials respond to external forces and conditions, revealing insights that are essential for advancements in technology and engineering.

滞后曲线的概念在科学和工程的各个领域中都是基础，特别是在研究材料及其在不同条件下的行为时。滞后曲线描述了两个变量之间的关系，通常是施加在材料上的力或应力与其所经历的变形或应变之间的关系。这种现象是由于材料固有的特性造成的，它们对施加的力并不线性响应。 为了更好地理解滞后曲线，可以想象橡皮筋在拉伸时的行为。当你拉动橡皮筋时，它会伸展，当你释放它时，它会恢复到原来的形状。然而，如果你将其拉伸超过某一点，橡皮筋可能不会完全恢复到初始长度。这种行为表明了滞后现象，即加载（拉伸）过程中所采取的路径与卸载（放松）过程中所采取的路径不同。这个过程的图形表示形成一个环，被称为滞后曲线。 在物理学中，滞后曲线通常用于描述磁性材料。当施加磁场于铁磁材料时，它会被磁化。去除磁场后，材料不会立即失去其磁性。相反，它仍然保留一些磁性，表现出响应的滞后，导致在磁场强度与磁化强度的图上形成一个环。这个环就是滞后曲线，它提供了关于材料特性的宝贵信息，如矫顽力和剩余磁性。 在工程学中，滞后曲线对于理解遭受循环加载的系统的行为至关重要。例如，在结构工程中，像钢这样的材料在经历重复应力循环时表现出滞后现象。在这些循环中耗散的能量可以通过滞后曲线内的面积来量化。这在设计必须承受动态负载的结构时尤为重要，例如地震多发地区的桥梁和建筑物。 此外，滞后曲线在热力学中也具有重要意义，尤其是在相变中。例如，当加热物质时，它可能会经历从固态到液态的变化。这一过程发生的温度可能取决于物质是被加热还是冷却，从而导致一条滞后曲线，该曲线划定了在两个方向上发生相变的温度。这一概念在食品加工和材料科学等多个行业中具有应用，其中温度控制对产品质量至关重要。 总之，滞后曲线是可视化和理解材料及系统在不同条件下复杂行为的强大工具。通过研究这些曲线，科学家和工程师可以就材料选择、结构设计和过程优化做出明智的决策。滞后的影响远远超出了简单的机械系统，影响着物理学、工程学和材料科学等多个领域。随着我们对这些曲线理解的加深，我们在技术创新和改善各种应用的能力也随之增强。 理解滞后曲线不仅仅是学术练习；它是确保我们日常生活中遇到的无数系统和材料的可靠性和效率的实际必要性。 总之，滞后曲线（滞后曲线）作为材料如何响应外部力量和条件的重要表现，揭示了对技术和工程进步至关重要的见解。