mechanical stress

简明释义

机械应力

英英释义

例句

1.To improve durability, the product was tested under various mechanical stress 机械应力 conditions.

为了提高耐用性，该产品在各种机械应力机械应力条件下进行了测试。

2.Engineers must consider mechanical stress 机械应力 when selecting materials for construction.

工程师在选择建筑材料时必须考虑机械应力机械应力。

3.The bridge was designed to withstand significant mechanical stress 机械应力 during heavy traffic.

这座桥设计成能够承受在重型交通下的显著机械应力机械应力。

4.In aerospace engineering, mechanical stress 机械应力 analysis is crucial for safety.

在航空航天工程中，机械应力机械应力分析对安全至关重要。

5.The failure of the component was attributed to excessive mechanical stress 机械应力 during operation.

该组件的故障归因于操作过程中过大的机械应力机械应力。

作文

Mechanical stress is a fundamental concept in the field of engineering and materials science. It refers to the internal forces that develop within a material when it is subjected to external loads. These stresses can lead to various forms of deformation, including stretching, compression, bending, and torsion. Understanding mechanical stress (机械应力) is crucial for engineers and designers as it helps them predict how materials will behave under different conditions.When a material is loaded, it experiences a distribution of forces across its structure. The magnitude and direction of these forces determine the type and extent of mechanical stress (机械应力) that occurs. For instance, when a beam is supported at both ends and a weight is placed in the center, the beam experiences bending stress. This type of stress can be calculated using formulas derived from the principles of mechanics.One important aspect of mechanical stress (机械应力) is that it can lead to failure if the applied load exceeds the material's strength. Different materials have different tolerances for stress; for example, metals typically have high tensile strength, while ceramics may fail under compressive stress. Engineers must consider these properties when designing structures to ensure safety and durability.Furthermore, mechanical stress (机械应力) can be categorized into several types: tensile stress, compressive stress, shear stress, and torsional stress. Tensile stress occurs when a material is pulled apart, while compressive stress happens when it is pushed together. Shear stress arises when forces are applied parallel to the surface of a material, causing layers to slide past one another. Torsional stress, on the other hand, occurs when a material is twisted about its axis.The study of mechanical stress (机械应力) also involves understanding stress-strain relationships, which describe how materials deform when subjected to stress. The stress-strain curve is a graphical representation that illustrates how a material responds to increasing levels of stress. The initial linear portion of the curve indicates elastic behavior, where the material returns to its original shape after the load is removed. However, once the yield point is reached, the material enters the plastic region, where permanent deformation occurs.In practical applications, engineers often use finite element analysis (FEA) to simulate and analyze mechanical stress (机械应力) in complex structures. This computational method allows for detailed predictions of how a component will react under various loading conditions, helping to identify potential failure points before physical testing.In conclusion, understanding mechanical stress (机械应力) is essential for anyone involved in the design and analysis of materials and structures. By grasping the concepts of stress types, stress-strain relationships, and the implications of exceeding material limits, engineers can create safer and more efficient designs. As technology advances and materials become more sophisticated, the importance of accurately predicting mechanical stress (机械应力) will only continue to grow, making it a critical area of study in modern engineering.

机械应力是工程和材料科学领域的一个基本概念。它指的是当材料受到外部载荷时，在材料内部产生的内力。这些应力可能导致各种形变，包括拉伸、压缩、弯曲和扭转。理解机械应力（mechanical stress）对工程师和设计师至关重要，因为它有助于他们预测材料在不同条件下的表现。当材料被加载时，它会在其结构中经历力的分布。这些力的大小和方向决定了发生的机械应力（mechanical stress）的类型和程度。例如，当一根梁在两端支撑，并且在中心放置一个重量时，梁会经历弯曲应力。这种类型的应力可以通过从力学原理推导出的公式进行计算。机械应力（mechanical stress）的一个重要方面是，如果施加的载荷超过材料的强度，就可能导致失效。不同的材料对应力的耐受性不同；例如，金属通常具有高抗拉强度，而陶瓷在受压应力下可能会失效。工程师在设计结构时必须考虑这些特性，以确保安全和耐用性。此外，机械应力（mechanical stress）可以分为几种类型：拉伸应力、压缩应力、剪切应力和扭转应力。拉伸应力发生在材料被拉开的情况下，而压缩应力则发生在材料被推在一起的情况下。剪切应力是在材料表面平行施加力时产生的，导致层之间滑动。另一方面，扭转应力发生在材料围绕其轴线扭转时。机械应力（mechanical stress）的研究还涉及了解应力-应变关系，这描述了材料在受到应力时如何变形。应力-应变曲线是一个图形表示，说明材料在增加应力水平时的反应。曲线的初始线性部分表示弹性行为，即材料在卸载后恢复到原始形状。然而，一旦达到屈服点，材料进入塑性区域，发生永久变形。在实际应用中，工程师通常使用有限元分析（FEA）来模拟和分析复杂结构中的机械应力（mechanical stress）。这种计算方法允许详细预测组件在各种载荷条件下的反应，帮助识别潜在的失效点，而无需进行物理测试。总之，理解机械应力（mechanical stress）对于任何参与材料和结构设计与分析的人来说都是必不可少的。通过掌握应力类型、应力-应变关系以及超出材料极限的影响，工程师可以创造出更安全、更高效的设计。随着科技的发展和材料的日益复杂，准确预测机械应力（mechanical stress）的重要性只会继续增长，使其成为现代工程学中一个关键的研究领域。