section modulus

简明释义

剖面系数

英英释义

例句

1.The section modulus 截面模量 is crucial in determining the strength of the column under axial loads.

在确定柱子在轴向载荷下的强度时，section modulus 截面模量至关重要。

2.The designer chose a material with a higher section modulus 截面模量 to reduce the overall weight of the structure.

设计师选择了一种具有更高section modulus 截面模量的材料，以减少结构的整体重量。

3.To optimize the bridge design, we need to analyze the section modulus 截面模量 of each girder.

为了优化桥梁设计，我们需要分析每个主梁的section modulus 截面模量。

4.Increasing the section modulus 截面模量 of a structural member can enhance its resistance to bending.

增加结构构件的section modulus 截面模量可以增强其抗弯能力。

5.The engineer calculated the section modulus 截面模量 of the beam to ensure it could support the load.

工程师计算了梁的section modulus 截面模量以确保它能够支撑负载。

作文

The concept of section modulus is essential in the field of structural engineering, particularly when analyzing the strength and stability of various structural elements. The section modulus is a geometric property that provides insight into how a cross-section will respond to bending moments. It is defined as the ratio of the moment of inertia of a section about a given axis to the distance from that axis to the furthest point of the section. This means that the larger the section modulus, the more resistance the structure has to bending. In practical terms, engineers often use the section modulus to determine whether a beam or column can support the loads it will encounter during its lifespan. For example, when designing a bridge, an engineer must calculate the expected loads, including vehicles, pedestrians, and environmental factors like wind and snow. By using the section modulus, the engineer can ensure that the selected materials and dimensions of the beams and supports will be adequate to handle these loads without failing. The calculation of the section modulus involves understanding the shape of the cross-section being analyzed. Different shapes, such as rectangles, I-beams, and circular sections, have distinct formulas for calculating their section modulus. For instance, for a rectangular beam, the section modulus can be calculated using the formula: S = (b * h^2) / 6, where 'b' is the width and 'h' is the height of the rectangle. This emphasizes that the dimensions of the cross-section play a crucial role in its ability to resist bending. Moreover, the section modulus is not just useful for new designs but also for evaluating existing structures. Engineers may assess the section modulus of an old bridge to determine if it still meets safety standards or if it requires reinforcement. This assessment is vital for maintaining infrastructure and ensuring public safety. In conclusion, the section modulus is a fundamental concept in structural engineering that aids in the design and analysis of beams and columns. Understanding this property allows engineers to create safe and efficient structures capable of withstanding various loads. As buildings and bridges become more complex, the importance of accurately calculating the section modulus will only continue to grow, reinforcing its significance in the engineering field.

“截面模量”这一概念在结构工程领域中至关重要，特别是在分析各种结构元素的强度和稳定性时。“截面模量”是一个几何属性，为我们提供了关于截面如何响应弯曲力矩的见解。它被定义为某一截面相对于给定轴的惯性矩与该轴到截面最远点的距离之比。这意味着，“截面模量”越大，结构对弯曲的抵抗力就越强。在实际应用中，工程师常常使用“截面模量”来确定梁或柱是否能够支撑其在使用寿命中会遇到的荷载。例如，在设计一座桥时，工程师必须计算预期的荷载，包括车辆、行人以及风雪等环境因素。通过使用“截面模量”，工程师可以确保所选材料和梁、支撑的尺寸足以应对这些荷载而不发生失效。“截面模量”的计算涉及理解被分析截面的形状。不同的形状，如矩形、工字梁和圆形截面，具有不同的“截面模量”计算公式。例如，对于矩形梁，可以使用以下公式计算“截面模量”：S = (b * h^2) / 6，其中'b'为宽度，'h'为高度。这强调了截面尺寸在抵抗弯曲能力中的关键作用。此外，“截面模量”不仅对新设计有用，还可用于评估现有结构。工程师可能会评估一座旧桥的“截面模量”，以确定其是否仍符合安全标准，或者是否需要加固。这一评估对于维护基础设施和确保公共安全至关重要。总之，“截面模量”是结构工程中的一个基本概念，有助于梁和柱的设计和分析。理解这一属性使工程师能够创建安全、高效的结构，能够承受各种荷载。随着建筑和桥梁变得越来越复杂，准确计算“截面模量”的重要性只会继续增长，从而增强其在工程领域的重要性。