permissible stress

简明释义

许可应力

英英释义

例句

1.Engineers must adhere to the permissible stress 允许应力 guidelines in their designs.

工程师在设计中必须遵循允许应力 permissible stress的指导方针。

2.The permissible stress 允许应力 limits were exceeded, leading to structural failure.

超过了允许应力 permissible stress限制，导致结构失效。

3.Before construction, it's essential to determine the permissible stress 允许应力 of the materials used.

在施工之前，确定所用材料的允许应力 permissible stress是至关重要的。

4.The report indicated that the permissible stress 允许应力 for this material is significantly high.

报告指出该材料的允许应力 permissible stress显著较高。

5.The engineer calculated the permissible stress 允许应力 for the steel beams to ensure safety.

工程师计算了钢梁的允许应力 permissible stress以确保安全。

作文

In the field of engineering, particularly in structural engineering, the term permissible stress refers to the maximum stress that a material can withstand without experiencing failure. This concept is crucial for ensuring the safety and durability of structures such as bridges, buildings, and other infrastructure. Understanding permissible stress is essential for engineers as it helps them design structures that can safely support expected loads while minimizing the risk of structural failure.When engineers design a structure, they must consider various factors, including the materials used, the loads the structure will bear, and environmental conditions. The permissible stress of a material is determined through rigorous testing and analysis. For instance, materials like steel and concrete have different permissible stress values based on their properties. Steel, known for its high tensile strength, has a higher permissible stress compared to concrete, which is more susceptible to compression but weaker in tension.To ensure safety, engineers apply a factor of safety when calculating the loads a structure will experience. This means that the actual loads applied to a structure should be significantly less than its permissible stress. For example, if the permissible stress of a beam is calculated to be 250 megapascals (MPa), engineers might design the beam to only handle loads that generate stresses of 150 MPa. This approach provides a buffer against unexpected loads or material defects that could lead to failure.The importance of adhering to permissible stress cannot be overstated. Structures that exceed their permissible stress limits risk catastrophic failure, which can result in loss of life, property damage, and significant economic consequences. Historical events, such as bridge collapses or building failures, often highlight the repercussions of neglecting permissible stress considerations during the design phase.In addition to structural integrity, understanding permissible stress also plays a role in the sustainability of engineering practices. By optimizing designs to stay within permissible stress limits, engineers can reduce material usage, leading to more sustainable construction practices. This not only conserves resources but also minimizes the environmental impact associated with extracting and processing materials.Moreover, the concept of permissible stress extends beyond traditional materials. With the advent of advanced composite materials and innovative construction techniques, engineers must continuously adapt their understanding of permissible stress. New materials may exhibit different stress-strain behaviors, necessitating updated testing methodologies and design standards.In conclusion, the term permissible stress is a fundamental aspect of engineering that ensures safety, reliability, and sustainability in structural design. By respecting the limits set by permissible stress, engineers can create structures that not only meet functional requirements but also stand the test of time. As technology advances and new materials emerge, ongoing education and adaptation regarding permissible stress will remain vital for the engineering profession, ultimately contributing to safer and more resilient infrastructures worldwide.

在工程领域，特别是结构工程中，术语可允许应力指的是材料在不发生失效的情况下能够承受的最大应力。这个概念对于确保桥梁、建筑物和其他基础设施的安全性和耐久性至关重要。理解可允许应力对工程师来说是必不可少的，因为它帮助他们设计能够安全承受预期载荷的结构，同时最小化结构失效的风险。当工程师设计结构时，他们必须考虑各种因素，包括所用材料、结构将承受的载荷以及环境条件。材料的可允许应力是通过严格的测试和分析确定的。例如，钢材和混凝土的可允许应力值基于其特性而有所不同。钢材以其高抗拉强度而闻名，其可允许应力相较于混凝土更高，后者在压缩方面表现良好，但在拉伸方面较弱。为了确保安全，工程师在计算结构将经历的载荷时会应用安全系数。这意味着施加在结构上的实际载荷应远低于其可允许应力。例如，如果一根梁的可允许应力计算为250兆帕（MPa），工程师可能会设计该梁只承受产生150 MPa应力的载荷。这种方法为意外载荷或材料缺陷提供了缓冲，避免了失效的风险。遵循可允许应力的重要性不容小觑。超出其可允许应力限制的结构面临灾难性失效的风险，这可能导致生命损失、财产损坏以及重大的经济后果。历史事件，例如桥梁坍塌或建筑物失效，常常突显了在设计阶段忽视可允许应力考虑的后果。除了结构完整性，理解可允许应力在工程实践的可持续性中也起着重要作用。通过优化设计以保持在可允许应力限制之内，工程师可以减少材料使用，从而实现更可持续的施工实践。这不仅节约了资源，还最小化了与提取和加工材料相关的环境影响。此外，可允许应力的概念超越了传统材料。随着先进复合材料和创新施工技术的出现，工程师必须不断调整对可允许应力的理解。新材料可能表现出不同的应力-应变行为，因此需要更新的测试方法和设计标准。总之，术语可允许应力是工程的基本方面，确保结构设计的安全性、可靠性和可持续性。通过尊重可允许应力设定的限制，工程师可以创建不仅满足功能要求而且经得起时间考验的结构。随着技术的进步和新材料的出现，关于可允许应力的持续教育和适应将对工程行业至关重要，最终有助于全球更安全和更具韧性的基础设施。