flexural rigidity of section

简明释义

截面弯曲刚度

英英释义

例句

1.A higher flexural rigidity of section can lead to less deflection under load, which is essential for tall buildings.

更高的截面弯曲刚度可以在负载下导致较少的挠度，这对高层建筑至关重要。

2.The flexural rigidity of section is often tested in laboratories to meet safety standards.

为了满足安全标准，截面的弯曲刚度通常在实验室中进行测试。

3.In designing the bridge, the flexural rigidity of section was a critical factor in determining the overall stability.

在设计桥梁时，截面的弯曲刚度是决定整体稳定性的关键因素。

4.The architect specified materials that would increase the flexural rigidity of section for the roof structure.

建筑师指定了将增加屋顶结构的截面弯曲刚度的材料。

5.The engineer calculated the flexural rigidity of section to ensure the beam could support the load without bending excessively.

工程师计算了截面的弯曲刚度以确保梁能够在不发生过度弯曲的情况下支撑负载。

作文

In the field of structural engineering, understanding the properties of materials and their geometrical configurations is crucial for designing safe and efficient structures. One of the key concepts that engineers often encounter is the flexural rigidity of section, which plays a significant role in determining how a beam or structural element will behave under load. The term flexural rigidity of section refers to the resistance of a given cross-section to bending. It is mathematically defined as the product of the modulus of elasticity (E) of the material and the moment of inertia (I) of the cross-section about the axis of bending. This concept is fundamental when analyzing the deflection and stress distribution in beams subjected to various types of loads.To better understand the importance of flexural rigidity of section, consider the example of a simply supported beam. When a load is applied to the center of the beam, it experiences bending moments that cause it to deflect. The amount of deflection depends on both the material properties and the geometric characteristics of the beam's cross-section. A beam with high flexural rigidity of section will exhibit less deflection compared to a beam with low rigidity when subjected to the same load. This is why selecting the appropriate material and designing an optimal cross-section are crucial steps in the engineering design process.Moreover, the flexural rigidity of section is not only important for ensuring that structures can support the expected loads but also for maintaining serviceability. Excessive deflection can lead to problems such as discomfort for occupants, damage to non-structural elements, and even failure of the structure itself. Therefore, engineers must carefully calculate the flexural rigidity of section to ensure that the structure not only meets safety requirements but also performs adequately under normal use conditions.In practical applications, various materials offer different values of elasticity, which affects the overall flexural rigidity of section. For instance, steel typically has a higher modulus of elasticity compared to wood, making steel beams stiffer and more resistant to bending. However, the choice of material is often influenced by other factors such as cost, availability, and aesthetic considerations. Engineers must balance these factors while ensuring that the flexural rigidity of section meets the design requirements.Furthermore, advancements in technology have allowed for the development of composite materials that combine the benefits of different materials to enhance the flexural rigidity of section. For example, reinforced concrete utilizes steel reinforcement bars to improve its bending strength, resulting in a composite section that exhibits superior performance compared to either material alone. This innovation demonstrates the importance of understanding the flexural rigidity of section in modern engineering practices.In conclusion, the flexural rigidity of section is a vital concept in structural engineering that influences the design and analysis of beams and other structural elements. By comprehending how this property relates to material selection and cross-sectional geometry, engineers can create structures that are not only safe and robust but also efficient and functional. As we continue to innovate and push the boundaries of engineering, the significance of the flexural rigidity of section will remain a cornerstone in the pursuit of excellence in structural design.

在结构工程领域，理解材料的特性及其几何构型对于设计安全和高效的结构至关重要。工程师经常遇到的一个关键概念是截面抗弯刚度，它在确定梁或结构元件在荷载下的行为方面起着重要作用。术语截面抗弯刚度指的是给定截面抵抗弯曲的能力。它在数学上被定义为材料的弹性模量（E）与截面关于弯曲轴的惯性矩（I）的乘积。这个概念在分析受各种类型荷载作用的梁的挠度和应力分布时是基础性的。为了更好地理解截面抗弯刚度的重要性，考虑一个简单支撑梁的例子。当荷载施加到梁的中心时，它会经历弯矩，导致其发生挠曲。挠度的大小取决于材料特性和梁截面的几何特征。具有高截面抗弯刚度的梁在施加相同荷载时将表现出较小的挠度，而具有低刚度的梁则相反。这就是为什么选择合适的材料并设计最佳截面是工程设计过程中的关键步骤。此外，截面抗弯刚度不仅对确保结构能够承受预期荷载至关重要，而且对维持使用性能也很重要。过大的挠度可能导致居住者的不适、非结构性元素的损坏，甚至结构本身的失效。因此，工程师必须仔细计算截面抗弯刚度，以确保结构不仅满足安全要求，还能在正常使用条件下表现良好。在实际应用中，各种材料提供不同的弹性值，这影响了整体的截面抗弯刚度。例如，钢材的弹性模量通常比木材高，使得钢梁更加坚固，更能抵抗弯曲。然而，材料的选择往往受到成本、可获得性和美观等其他因素的影响。工程师必须在确保截面抗弯刚度符合设计要求的同时，平衡这些因素。此外，技术的进步使得复合材料的开发成为可能，这些材料结合了不同材料的优点，以增强截面抗弯刚度。例如，钢筋混凝土利用钢筋来提高其弯曲强度，从而产生一种复合截面，其性能优于单独的任一材料。这一创新展示了在现代工程实践中理解截面抗弯刚度的重要性。总之，截面抗弯刚度是结构工程中一个至关重要的概念，它影响着梁和其他结构元件的设计和分析。通过理解这一属性与材料选择和截面几何形状之间的关系，工程师可以创造出不仅安全稳固，还高效且功能齐全的结构。随着我们不断创新并推动工程的边界，截面抗弯刚度的重要性将继续作为结构设计追求卓越的基石。