plastic deformation

简明释义

塑性变形

英英释义

例句

1.During an earthquake, buildings may experience plastic deformation 塑性变形 that can compromise their integrity.

在地震期间，建筑物可能会经历塑性变形 塑性变形，这可能会损害其完整性。

2.Engineers must consider plastic deformation 塑性变形 when designing structures to ensure they can withstand applied loads.

工程师在设计结构时必须考虑塑性变形 塑性变形，以确保它们能够承受施加的载荷。

3.The plastic deformation 塑性变形 of metals can be observed during processes like forging and rolling.

在锻造和轧制等过程中，可以观察到金属的塑性变形 塑性变形。

4.In the manufacturing process, plastic deformation 塑性变形 is often utilized to shape materials into desired forms.

在制造过程中，通常利用塑性变形 塑性变形来将材料塑造成所需的形状。

5.When a metal is subjected to stress beyond its yield strength, it undergoes plastic deformation 塑性变形 and will not return to its original shape.

当金属受到超出其屈服强度的应力时，它会经历塑性变形 塑性变形，并且不会恢复到其原始形状。

作文

Plastic deformation is a fundamental concept in materials science and engineering that describes the permanent change in shape or size of a material when subjected to a force beyond its elastic limit. When a material is deformed elastically, it returns to its original shape once the applied stress is removed. However, when the stress exceeds a certain threshold, known as the yield strength, the material undergoes plastic deformation (塑性变形), meaning it will not return to its original form even after the removal of the load.This phenomenon is crucial in various applications, particularly in manufacturing processes such as forging, rolling, and extrusion. Understanding plastic deformation (塑性变形) allows engineers to design components that can withstand significant stresses without failing. For instance, metals like steel and aluminum are often selected for structural applications because they exhibit favorable plastic deformation (塑性变形) characteristics, enabling them to absorb energy and deform without breaking under heavy loads.One of the key aspects of plastic deformation (塑性变形) is the role of dislocations within the crystal structure of materials. Dislocations are defects in the crystal lattice that allow atoms to move more easily under stress. When a material is subjected to an external force, these dislocations can move, leading to a rearrangement of the atomic structure. This movement is what facilitates plastic deformation (塑性变形), allowing the material to change shape.Temperature also plays a significant role in plastic deformation (塑性变形). Generally, increasing the temperature of a material decreases its yield strength, making it easier to achieve plastic deformation (塑性变形). This principle is exploited in processes like hot working, where metals are heated to high temperatures before being shaped. Conversely, at lower temperatures, materials tend to be more brittle and may fracture rather than deform plastically.The study of plastic deformation (塑性变形) is essential for predicting how materials behave under different conditions. Engineers use this knowledge to create models that simulate the behavior of materials under various loads and temperatures. Such simulations are invaluable in industries ranging from aerospace to automotive, where safety and performance are critical. By understanding how materials will react to stress, engineers can design safer and more efficient structures.In conclusion, plastic deformation (塑性变形) is a vital aspect of material science that impacts a wide range of engineering applications. It involves the permanent alteration of a material's shape when subjected to stress beyond its elastic limit. By leveraging the principles of plastic deformation (塑性变形), engineers can design materials and structures that are not only strong and durable but also capable of withstanding the rigors of real-world applications. As technology continues to advance, the understanding of plastic deformation (塑性变形) will undoubtedly play a crucial role in the development of new materials and manufacturing techniques.

塑性变形是材料科学和工程中的一个基本概念，描述了当材料受到超出其弹性极限的力时，其形状或尺寸的永久变化。当材料以弹性方式变形时，一旦施加的应力被移除，它会恢复到原来的形状。然而，当应力超过某个阈值，即屈服强度时，材料会经历塑性变形（塑性变形），这意味着即使在去除载荷后，它也不会返回到原始形状。这一现象在各种应用中至关重要，特别是在锻造、轧制和挤压等制造过程中。理解塑性变形（塑性变形）使工程师能够设计出能够承受显著应力而不发生故障的组件。例如，钢和铝等金属常被选择用于结构应用，因为它们表现出良好的塑性变形（塑性变形）特性，使其能够吸收能量并在重载下变形而不破裂。塑性变形（塑性变形）的一个关键方面是材料晶体结构中位错的作用。位错是晶体晶格中的缺陷，使原子在应力下更容易移动。当材料受到外部力时，这些位错可以移动，导致原子结构的重新排列。这种运动促进了塑性变形（塑性变形），使材料能够改变形状。温度在塑性变形（塑性变形）中也起着重要作用。通常，提高材料的温度会降低其屈服强度，从而更容易实现塑性变形（塑性变形）。这一原理在热加工过程中得到了利用，其中金属在被成型之前被加热到高温。相反，在低温下，材料往往更脆，可能会断裂而不是塑性变形。对塑性变形（塑性变形）的研究对于预测材料在不同条件下的行为至关重要。工程师利用这些知识创建模型，模拟材料在各种载荷和温度下的行为。这些模拟在航空航天和汽车等行业中是非常宝贵的，因为安全和性能至关重要。通过了解材料在应力下的反应，工程师可以设计出更安全、更高效的结构。总之，塑性变形（塑性变形）是材料科学的一个重要方面，影响着广泛的工程应用。它涉及到材料在受到超出其弹性极限的应力时形状的永久改变。通过利用塑性变形（塑性变形）的原理，工程师可以设计出不仅坚固耐用，而且能够承受现实世界应用严酷条件的材料和结构。随着技术的不断进步，对塑性变形（塑性变形）的理解无疑将在新材料和制造技术的发展中发挥关键作用。