allowable contact stress

简明释义

许用接触应力

英英释义

例句

1.The manufacturer provided specifications that included the allowable contact stress 允许接触应力 for the new material.

制造商提供的规格中包括了新材料的允许接触应力。

2.To ensure durability, the design must adhere to the allowable contact stress 允许接触应力 limits set by industry standards.

为了确保耐用性，设计必须遵循行业标准设定的允许接触应力限制。

3.In the analysis of the joint, we need to determine the allowable contact stress 允许接触应力 for safety.

在接头分析中，我们需要确定安全的允许接触应力。

4.Engineers calculated the allowable contact stress 允许接触应力 to prevent failure in the gear system.

工程师计算了允许接触应力以防止齿轮系统的失效。

5.The design of the bearing must ensure that the allowable contact stress 允许接触应力 is not exceeded during operation.

轴承的设计必须确保在运行过程中不超过允许接触应力。

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 excessive deformation. Engineers must carefully calculate this value to ensure the longevity and safety of components that will experience contact loads during their operation.The allowable contact stress is determined by various factors, including the material properties, the nature of the loads, and the conditions under which the materials are used. For instance, metals typically have higher allowable contact stresses compared to softer materials like plastics or rubber. This difference is due to the inherent strength and resistance to deformation that metals possess. Additionally, the type of loading—whether it is static or dynamic—can also influence the calculated values of allowable contact stress.When designing mechanical components such as gears, bearings, or seals, engineers must take into account the allowable contact stress to prevent premature wear or catastrophic failure. If the stress at the contact surface exceeds this allowable limit, it can lead to issues such as pitting, scuffing, or even complete fracture of the involved parts. Therefore, precise calculations and simulations are often employed during the design phase to predict how materials will behave under expected loads.Moreover, the concept of allowable contact stress is not only limited to static applications but is also critical in dynamic situations where components are subject to repeated loading and unloading cycles. In these cases, fatigue analysis becomes essential, as materials can fail after a certain number of cycles even if the stress levels remain below the yield strength. Engineers must consider factors such as surface roughness, lubrication, and environmental conditions when evaluating contact stresses in dynamic scenarios.In practical applications, the calculation of allowable contact stress often involves using empirical formulas or guidelines established by industry standards. For example, in the case of rolling element bearings, the Lundberg-Pallin equation is commonly used to estimate the fatigue life based on contact stresses. Similarly, for gear design, the AGMA (American Gear Manufacturers Association) standards provide methods for determining allowable contact stresses based on gear tooth geometry and material properties.In conclusion, the concept of allowable contact stress is fundamental in ensuring the reliability and performance of mechanical systems. By understanding and applying this concept, engineers can design components that withstand operational demands while minimizing the risk of failure. As technology continues to advance, the methodologies for calculating and optimizing allowable contact stress will evolve, further enhancing the safety and efficiency of engineering designs. The importance of this term cannot be overstated, as it plays a vital role in the success of countless applications across various industries.

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。这个术语指的是可以施加在两个材料接触表面上的最大应力，而不会导致失效或过度变形。工程师必须仔细计算这个值，以确保在运行过程中会承受接触载荷的组件的耐久性和安全性。允许接触应力是由多种因素决定的，包括材料特性、载荷性质以及材料使用条件。例如，金属的允许接触应力通常比塑料或橡胶等软材料高。这种差异源于金属所具有的固有强度和抗变形能力。此外，载荷类型——无论是静态还是动态——也会影响允许接触应力的计算值。在设计机械组件（如齿轮、轴承或密封件）时，工程师必须考虑允许接触应力以防止过早磨损或灾难性失效。如果接触表面的应力超过了这一允许限值，就可能导致点蚀、刮擦甚至涉及部件的完全断裂。因此，在设计阶段，通常会采用精确的计算和模拟来预测材料在预期载荷下的行为。此外，允许接触应力的概念不仅限于静态应用，在动态情况下，组件受到反复加载和卸载周期时同样至关重要。在这些情况下，疲劳分析变得至关重要，因为即使应力水平保持在屈服强度以下，材料也可能在一定数量的循环后发生失效。工程师必须考虑表面粗糙度、润滑和环境条件等因素，以评估动态场景中的接触应力。在实际应用中，允许接触应力的计算通常涉及使用经验公式或行业标准建立的指导方针。例如，在滚动元件轴承的情况下，Lundberg-Pallin方程通常用于根据接触应力估算疲劳寿命。同样，对于齿轮设计，AGMA（美国齿轮制造商协会）标准提供了基于齿轮齿几何形状和材料特性的允许接触应力的确定方法。总之，允许接触应力的概念在确保机械系统的可靠性和性能方面是基础。通过理解和应用这一概念，工程师可以设计出能够承受操作要求的组件，同时最小化失效风险。随着技术的不断进步，计算和优化允许接触应力的方法将不断演变，进一步提高工程设计的安全性和效率。这个术语的重要性不容小觑，因为它在各个行业的无数应用中发挥着至关重要的作用。