safe allowable stress

简明释义

安全容许应力

英英释义

例句

1.The engineer calculated the safe allowable stress to ensure the bridge could support heavy loads without failure.

工程师计算了安全允许应力以确保桥梁能够承受重载而不发生失效。

2.Manufacturers must adhere to the safe allowable stress guidelines to prevent product failures.

制造商必须遵循安全允许应力指南，以防止产品失效。

3.During testing, the component exceeded the safe allowable stress, indicating a potential risk.

在测试过程中，该组件超过了安全允许应力，表明存在潜在风险。

4.In the design of the skyscraper, the safe allowable stress was a critical factor in material selection.

在摩天大楼的设计中，安全允许应力是材料选择的关键因素。

5.The structural analysis confirmed that the materials used were within the safe allowable stress limits.

结构分析确认所用材料在安全允许应力限制范围内。

作文

In the field of engineering, particularly in structural and mechanical design, the term safe allowable stress plays a crucial role in ensuring the safety and integrity of materials and structures. Understanding this concept is essential for engineers who are tasked with designing components that can withstand various loads without failing. The safe allowable stress refers to the maximum stress that a material can endure without experiencing failure or yielding under specific conditions. It is determined based on the material properties, safety factors, and the type of loading conditions that the structure may encounter during its service life.The importance of safe allowable stress cannot be overstated. When designing a bridge, for instance, engineers must calculate the loads that the bridge will experience, including the weight of vehicles, environmental factors such as wind and snow, and dynamic loads from traffic. By applying the safe allowable stress, engineers can ensure that the materials used in the construction can handle these loads without exceeding their limits. This prevents catastrophic failures that could lead to loss of life and significant financial repercussions.To determine the safe allowable stress, engineers begin with the material's yield strength, which is the stress at which a material begins to deform plastically. They then apply a safety factor, which is a multiplier that accounts for uncertainties in the design process, variations in material properties, and unforeseen circumstances. For example, if a steel beam has a yield strength of 250 MPa and a safety factor of 2.5 is applied, the safe allowable stress would be 100 MPa. This means that the beam can safely carry loads up to this stress level without risking permanent deformation or failure.Moreover, the safe allowable stress is not a static value; it can vary depending on several factors, including temperature, fatigue, and the environment in which the material is used. For instance, materials exposed to high temperatures may have lower safe allowable stress values due to thermal degradation. Similarly, repeated loading can lead to fatigue, reducing the effective stress that a material can safely withstand over time.In addition to its application in structural engineering, the concept of safe allowable stress extends to various fields, including aerospace, automotive, and manufacturing industries. In each of these areas, understanding and applying the correct safe allowable stress is vital for producing safe and reliable products.In conclusion, the term safe allowable stress is fundamental to the engineering discipline. It encompasses the principles of material science, safety, and design integrity. By adhering to the guidelines associated with safe allowable stress, engineers can create structures and components that are not only functional but also safe for public use. As technology advances and materials evolve, the methods for calculating and applying safe allowable stress will continue to develop, ensuring that engineering practices remain robust and reliable in the face of new challenges.

在工程领域，特别是在结构和机械设计中，术语安全允许应力在确保材料和结构的安全性和完整性方面发挥着至关重要的作用。理解这一概念对于负责设计能够承受各种负载而不发生故障的组件的工程师来说至关重要。安全允许应力是指在特定条件下，材料能够承受而不出现故障或屈服的最大应力。它是基于材料属性、安全系数和结构在其使用寿命内可能遇到的加载条件来确定的。安全允许应力的重要性不容小觑。例如，在设计桥梁时，工程师必须计算桥梁将经历的荷载，包括车辆的重量、风雪等环境因素以及交通带来的动态荷载。通过应用安全允许应力，工程师可以确保用于建造的材料能够承受这些荷载，而不会超过其极限。这可以防止灾难性的故障，导致生命损失和重大财务损失。为了确定安全允许应力，工程师首先从材料的屈服强度开始，即材料开始发生塑性变形的应力。然后，他们应用一个安全系数，这是一个乘数，用于考虑设计过程中的不确定性、材料属性的变化和不可预见的情况。例如，如果一根钢梁的屈服强度为250 MPa，并且应用了2.5的安全系数，则安全允许应力将为100 MPa。这意味着该梁可以安全地承载高达此应力水平的荷载，而不风险永久变形或故障。此外，安全允许应力不是一个静态值；它可能会根据多个因素而变化，包括温度、疲劳和材料使用环境。例如，暴露在高温下的材料可能由于热降解而具有较低的安全允许应力值。同样，重复加载可能导致疲劳，从而降低材料在一段时间内可以安全承受的有效应力。除了在结构工程中的应用外，安全允许应力的概念还扩展到航空航天、汽车和制造业等各个领域。在每个领域，理解和应用正确的安全允许应力对于生产安全可靠的产品至关重要。总之，术语安全允许应力对工程学科至关重要。它涵盖了材料科学、安全性和设计完整性的原则。通过遵循与安全允许应力相关的指南，工程师可以创建不仅功能齐全而且对公众使用安全的结构和组件。随着技术的进步和材料的发展，计算和应用安全允许应力的方法将继续发展，确保工程实践在面对新挑战时保持稳健和可靠。