allowable design stress

简明释义

设计许用应力

英英释义

例句

1.Before construction, it's essential to verify that the allowable design stress is not exceeded in any structural element.

在施工之前，必须验证任何结构元素的允许设计应力没有超过。

2.The allowable design stress for steel beams is determined by various factors including load conditions and temperature.

钢梁的允许设计应力由包括载荷条件和温度在内的各种因素决定。

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

工程师计算了允许设计应力以确保桥梁能够承受重载而不会失效。

4.The structural integrity of the building depends on the allowable design stress of the materials used.

建筑的结构完整性取决于所用材料的允许设计应力。

5.In the design of aircraft components, the allowable design stress is critical for safety and performance.

在飞机部件的设计中，允许设计应力对安全和性能至关重要。

作文

In the field of engineering, particularly in structural and mechanical design, the concept of allowable design stress plays a crucial role in ensuring safety and reliability. Allowable design stress refers to the maximum stress that a material can withstand under specific conditions without experiencing failure or yielding. This value is determined through extensive testing and analysis, taking into account factors such as material properties, environmental conditions, and the intended use of the structure or component.The importance of allowable design stress cannot be overstated. Engineers must ensure that their designs operate within safe limits to prevent catastrophic failures that could lead to loss of life or significant property damage. For instance, when designing a bridge, engineers must calculate the loads it will experience, including the weight of vehicles, pedestrians, and environmental factors such as wind and earthquakes. By applying the principles of allowable design stress, they can determine the appropriate materials and dimensions needed to support these loads while maintaining safety.To calculate allowable design stress, engineers often start with the material's yield strength, which is the point at which the material begins to deform permanently. A safety factor is then applied to this yield strength to account for uncertainties in the material properties and loading conditions. The safety factor varies depending on the application and the potential consequences of failure. For example, critical applications such as aerospace components may require a higher safety factor compared to less critical structures.Different materials have different allowable design stress values. Metals, for instance, typically have higher allowable stresses compared to plastics or composites. This is why the choice of materials is vital in the design process. Engineers must select materials that not only meet the performance requirements but also factor in the allowable design stress to ensure long-term durability and safety.Moreover, the concept of allowable design stress extends beyond static loads. Dynamic loads, such as those experienced by moving vehicles or machinery, can significantly affect the stress levels in a structure. Engineers must consider these dynamic effects and adjust the allowable design stress accordingly. This often involves complex calculations and simulations to predict how materials will behave under various loading scenarios.In conclusion, understanding allowable design stress is essential for engineers tasked with designing safe and effective structures and components. By adhering to established guidelines and conducting thorough analyses, they can ensure that their designs are robust and capable of withstanding the demands placed upon them. Ultimately, the careful consideration of allowable design stress contributes to the overall safety and functionality of engineering projects, protecting both people and investments.

在工程领域，尤其是在结构和机械设计中，允许设计应力的概念在确保安全性和可靠性方面发挥着至关重要的作用。允许设计应力是指材料在特定条件下能够承受而不发生失效或屈服的最大应力。这一数值是通过广泛的测试和分析确定的，考虑了材料特性、环境条件以及结构或组件的预期用途等因素。允许设计应力的重要性不可低估。工程师必须确保他们的设计在安全范围内运行，以防止可能导致生命损失或重大财产损失的灾难性故障。例如，在设计桥梁时，工程师必须计算它将承受的荷载，包括车辆、行人和风、地震等环境因素的重量。通过应用允许设计应力的原则，他们可以确定所需的适当材料和尺寸，以支持这些荷载，同时保持安全性。为了计算允许设计应力，工程师通常从材料的屈服强度开始，即材料开始永久变形的点。然后对该屈服强度应用安全系数，以考虑材料特性和荷载条件的不确定性。安全系数根据应用和故障的潜在后果而有所不同。例如，航空航天组件等关键应用可能需要比不太关键的结构更高的安全系数。不同材料具有不同的允许设计应力值。例如，金属通常具有比塑料或复合材料更高的允许应力。这就是为什么材料选择在设计过程中至关重要。工程师必须选择不仅满足性能要求，而且还考虑到允许设计应力以确保长期耐用性和安全性的材料。此外，允许设计应力的概念超出了静态荷载。动态荷载，例如移动车辆或机械所经历的荷载，可能会显著影响结构中的应力水平。工程师必须考虑这些动态效应，并相应调整允许设计应力。这通常涉及复杂的计算和模拟，以预测材料在各种荷载场景下的行为。总之，理解允许设计应力对于负责设计安全有效的结构和组件的工程师至关重要。通过遵循既定指南并进行彻底分析，他们可以确保其设计稳健，能够承受施加于其上的要求。最终，仔细考虑允许设计应力有助于工程项目的整体安全性和功能性，保护人们和投资。