young's modulus of elasticity

简明释义

杨氏模量

英英释义

例句

1.When selecting materials for construction, the young's modulus of elasticity 杨氏弹性模量 helps predict structural performance.

在选择建筑材料时，杨氏弹性模量有助于预测结构性能。

2.The young's modulus of elasticity 杨氏弹性模量 of steel is significantly higher than that of wood, making it a preferred choice for heavy structures.

钢材的杨氏弹性模量远高于木材，使其成为重型结构的首选。

3.In our physics lab, we measured the young's modulus of elasticity 杨氏弹性模量 of rubber bands to understand their behavior under tension.

在我们的物理实验室，我们测量了橡皮筋的杨氏弹性模量，以了解它们在拉伸下的行为。

4.The engineer calculated the young's modulus of elasticity 杨氏弹性模量 for the new material to ensure it would withstand high stress.

工程师计算了新材料的杨氏弹性模量，以确保它能承受高应力。

5.The young's modulus of elasticity 杨氏弹性模量 is crucial for determining how much a beam will deflect under load.

计算梁在载荷下的挠度时，杨氏弹性模量是至关重要的。

作文

The concept of young's modulus of elasticity is fundamental in the field of materials science and engineering. It quantifies the relationship between stress and strain in a material, providing insight into its elastic properties. When a force is applied to a material, it deforms; this deformation can be measured as strain. The young's modulus of elasticity is defined as the ratio of tensile stress (force per unit area) to tensile strain (proportional deformation in length). This relationship is linear for small deformations, which means that the material will return to its original shape once the force is removed, as long as the elastic limit is not exceeded.Understanding the young's modulus of elasticity is crucial for engineers and designers when selecting materials for various applications. For instance, metals typically exhibit high values of young's modulus of elasticity, making them suitable for structural applications where strength and rigidity are required. Conversely, materials like rubber have a low young's modulus of elasticity, which allows them to stretch and compress easily. This property is essential in applications such as tires, where flexibility and durability are critical.In practical terms, the young's modulus of elasticity can be determined through experiments. A common method involves applying a known force to a specimen of the material and measuring the resulting deformation. By plotting the stress against strain, a straight line can be observed in the elastic region, and the slope of this line represents the young's modulus of elasticity. This empirical approach allows engineers to characterize materials accurately and make informed decisions about their use.Moreover, the young's modulus of elasticity is not just limited to metals and polymers; it also applies to biological materials. For example, the young's modulus of elasticity of bone is an important factor in understanding how bones respond to forces during activities like walking or running. Engineers working in biomedical fields often utilize this information when designing prosthetics or implants, ensuring that these devices mimic the mechanical properties of natural tissues.The significance of the young's modulus of elasticity extends beyond just theoretical knowledge; it has real-world implications. In construction, for example, knowing the young's modulus of elasticity of concrete helps engineers design buildings that can withstand various loads, including those from occupants and environmental factors like wind or earthquakes. Similarly, in aerospace engineering, the young's modulus of elasticity of materials used in aircraft must be carefully considered to ensure safety and performance under extreme conditions.In conclusion, the young's modulus of elasticity is a key parameter in understanding the mechanical behavior of materials. Its applications span across various fields, from civil engineering to biomedical engineering, highlighting its importance in both academic research and practical applications. By mastering the concept of young's modulus of elasticity, students and professionals can better appreciate the intricate balance between material properties and their functional uses in the world around us.

杨氏弹性模量的概念在材料科学和工程领域中是基础性的。它量化了材料中的应力与应变之间的关系，提供了对其弹性特性的洞察。当施加力于材料时，它会变形；这种变形可以测量为应变。杨氏弹性模量定义为拉伸应力（单位面积上的力）与拉伸应变（长度的比例变形）之比。这种关系在小变形下是线性的，这意味着只要不超过弹性极限，材料在去除力后会恢复到原始形状。理解杨氏弹性模量对于工程师和设计师在选择各种应用材料时至关重要。例如，金属通常表现出高值的杨氏弹性模量，这使得它们适合用于需要强度和刚性的结构应用。相反，像橡胶这样的材料具有低的杨氏弹性模量，这使得它们能够轻松地拉伸和压缩。这种特性在轮胎等应用中至关重要，在这些应用中，灵活性和耐用性是关键。在实践中，可以通过实验确定杨氏弹性模量。一种常见的方法是对材料样本施加已知的力，并测量由此产生的变形。通过绘制应力与应变的图表，可以在弹性区域观察到一条直线，而这条线的斜率代表了杨氏弹性模量。这种经验方法使工程师能够准确地表征材料，并就其使用做出明智的决定。此外，杨氏弹性模量不仅限于金属和聚合物；它也适用于生物材料。例如，骨骼的杨氏弹性模量是理解骨骼在步行或跑步等活动中如何响应力的重要因素。在生物医学领域工作的工程师通常利用这些信息来设计假肢或植入物，确保这些设备模拟自然组织的机械特性。杨氏弹性模量的重要性不仅仅限于理论知识；它具有现实世界的影响。在建筑中，例如，知道混凝土的杨氏弹性模量有助于工程师设计能够承受各种负载的建筑，包括来自居民和环境因素（如风或地震）的负载。同样，在航空航天工程中，飞机中使用的材料的杨氏弹性模量必须仔细考虑，以确保在极端条件下的安全性和性能。总之，杨氏弹性模量是理解材料机械行为的关键参数。它的应用跨越多个领域，从土木工程到生物医学工程，突显了它在学术研究和实际应用中的重要性。通过掌握杨氏弹性模量的概念，学生和专业人员可以更好地欣赏材料特性与其在周围世界中的功能用途之间的微妙平衡。