allowable contact stress

简明释义

允许接触应力;

英英释义

例句

1.When analyzing a bolted joint, it's crucial to consider the allowable contact stress (允许接触应力) to avoid failure.

在分析螺栓连接时，考虑允许接触应力 (允许接触应力)是至关重要的，以避免失效。

2.The allowable contact stress (允许接触应力) is determined based on the material properties and operational conditions.

根据材料特性和操作条件确定允许接触应力 (允许接触应力)。

3.The bearing manufacturer provides guidelines on the allowable contact stress (允许接触应力) for different materials used in their products.

轴承制造商提供有关其产品中使用的不同材料的允许接触应力 (允许接触应力)的指导。

4.In structural applications, engineers often calculate the allowable contact stress (允许接触应力) to ensure safety and durability.

在结构应用中，工程师通常计算允许接触应力 (允许接触应力)以确保安全性和耐久性。

5.The design of the gear teeth must ensure that the maximum load does not exceed the allowable contact stress (允许接触应力) to prevent surface fatigue.

齿轮齿的设计必须确保最大负荷不超过允许接触应力 (允许接触应力)，以防止表面疲劳。

作文

In the field of engineering, particularly in mechanical and structural design, understanding the concept of allowable contact stress is crucial. This term refers to the maximum stress that can be applied at the contact surface between two materials without causing failure or yielding. The significance of allowable contact stress lies in its role in ensuring the reliability and safety of mechanical components under load. Engineers must carefully calculate this value to prevent excessive wear, deformation, or catastrophic failure of parts that are subjected to contact forces.When designing components such as gears, bearings, or any interface where two surfaces meet, it is essential to consider the allowable contact stress. For instance, in gear design, the teeth of the gears come into contact with each other during operation. If the contact stress exceeds the allowable limit, it may lead to pitting, spalling, or complete tooth failure. Therefore, engineers use material properties, load conditions, and safety factors to determine the appropriate allowable contact stress for specific applications.To calculate allowable contact stress, engineers often refer to established standards and guidelines, such as those provided by the American Society of Mechanical Engineers (ASME) or the American National Standards Institute (ANSI). These organizations provide formulas and charts that help in identifying the permissible limits based on material characteristics and expected loading conditions. For example, the Hertzian contact stress theory is commonly used to analyze contact stresses between curved surfaces, such as in rolling element bearings.Additionally, it is important to note that allowable contact stress can vary significantly depending on the material properties of the components involved. Harder materials may withstand higher contact stresses, while softer materials may require lower limits to avoid permanent deformation. Furthermore, environmental factors such as temperature, lubrication, and surface finish can also influence the effective allowable contact stress in real-world applications.Another aspect to consider is the dynamic nature of loads that components experience during their operation. In many cases, contact stresses fluctuate due to varying operational conditions, which necessitates a thorough analysis to ensure that the allowable contact stress is not exceeded during any part of the operating cycle. Engineers often employ fatigue analysis in conjunction with contact stress calculations to predict the lifespan of components subjected to repeated loading.In conclusion, the concept of allowable contact stress is fundamental in the design and analysis of mechanical systems. By understanding and applying this principle, engineers can enhance the durability and performance of their designs, ultimately leading to safer and more efficient machinery. As technology advances, the methods for calculating and applying allowable contact stress will continue to evolve, providing even more robust solutions for complex engineering challenges.

在工程领域，特别是在机械和结构设计中，理解允许接触应力的概念至关重要。这个术语指的是在两个材料之间的接触表面上施加的最大应力，而不会导致失效或屈服。允许接触应力的重要性在于它在确保机械部件在负载下的可靠性和安全性方面所发挥的作用。工程师必须仔细计算这个值，以防止过度磨损、变形或零件在承受接触力时发生灾难性故障。在设计齿轮、轴承或任何两个表面接触的接口等部件时，考虑允许接触应力是至关重要的。例如，在齿轮设计中，齿轮的齿在运行过程中相互接触。如果接触应力超过允许的极限，可能会导致点蚀、剥落或完全失去齿。因此，工程师使用材料特性、负载条件和安全系数来确定特定应用的适当允许接触应力。为了计算允许接触应力，工程师通常参考由美国机械工程师协会（ASME）或美国国家标准协会（ANSI）提供的既定标准和指南。这些组织提供公式和图表，以帮助识别基于材料特性和预期负载条件的许可限度。例如，赫兹接触应力理论通常用于分析曲面之间的接触应力，例如在滚动元件轴承中。此外，需要注意的是，允许接触应力可能会因涉及的材料特性而显著变化。较硬的材料可能承受更高的接触应力，而较软的材料可能需要较低的限制以避免永久性变形。此外，温度、润滑和表面光洁度等环境因素也会影响实际应用中的有效允许接触应力。另一个需要考虑的方面是组件在操作过程中经历的负载的动态性质。在许多情况下，由于操作条件的变化，接触应力会波动，这就需要进行彻底分析，以确保在操作周期的任何部分都不会超过允许接触应力。工程师通常结合疲劳分析与接触应力计算，以预测承受重复负载的组件的使用寿命。总之，允许接触应力的概念在机械系统的设计和分析中是基础性的。通过理解和应用这一原则，工程师可以增强其设计的耐用性和性能，最终导致更安全和更高效的机械设备。随着技术的进步，计算和应用允许接触应力的方法将继续发展，为复杂的工程挑战提供更强大的解决方案。