permanent buckling

简明释义

永久皱折

英英释义

例句

1.The bridge experienced permanent buckling due to the excessive weight of the trucks, causing structural damage.

由于卡车的超重，桥梁经历了永久性屈曲，导致结构损坏。

2.After the earthquake, engineers found permanent buckling in several steel beams that needed immediate replacement.

地震后，工程师发现几根钢梁出现了永久性屈曲，需要立即更换。

3.The design of the column must account for permanent buckling to ensure safety under load.

柱子的设计必须考虑到永久性屈曲，以确保在负载下的安全。

4.During testing, the material showed signs of permanent buckling after exceeding its yield strength.

在测试过程中，材料在超过其屈服强度后显示出永久性屈曲的迹象。

5.The architect was concerned about the permanent buckling of the roof structure after the heavy snowfall.

建筑师担心大雪后屋顶结构的永久性屈曲。

作文

In the field of engineering and structural design, understanding the concept of permanent buckling is crucial for ensuring the safety and durability of structures. Buckling refers to the sudden failure of a structural component under compressive stress, where it deforms significantly and loses its load-carrying capacity. When this deformation is temporary, the structure can return to its original shape once the load is removed. However, when we talk about permanent buckling (永久屈曲), we refer to a scenario where the deformation is irreversible, leading to a permanent change in the structure's geometry. This phenomenon can occur in various materials, including metals, plastics, and composites, and is particularly concerning in slender structures like columns, beams, and frames.The mechanics behind permanent buckling involves several factors, including material properties, geometric configurations, and the type of load applied. For instance, a slender steel column subjected to axial compression may initially withstand the load. However, if the load exceeds a certain critical threshold, the column may experience buckling. If the buckling is severe enough, the column will not return to its original shape after the load is removed, resulting in permanent buckling (永久屈曲). This can compromise the integrity of the entire structure, leading to potential failures and safety hazards.To prevent permanent buckling, engineers must carefully analyze the design and loading conditions of structures. This includes selecting appropriate materials that can withstand the expected loads without yielding or buckling. Additionally, the geometry of structural elements plays a significant role; for example, increasing the cross-sectional area or using bracing systems can enhance stability and resistance to buckling. Moreover, understanding the load paths and how forces are distributed throughout a structure is essential in mitigating the risks associated with permanent buckling (永久屈曲).Real-world examples highlight the importance of addressing permanent buckling. One notable case is the collapse of the Tacoma Narrows Bridge in 1940, which was primarily due to aerodynamic flutter rather than buckling. However, many other structures have failed due to inadequate consideration of buckling effects, leading to catastrophic outcomes. These incidents underline the necessity for rigorous design practices and adherence to safety standards in construction.In conclusion, the concept of permanent buckling (永久屈曲) is a vital aspect of structural engineering that cannot be overlooked. By comprehensively understanding the mechanisms that lead to permanent deformation and implementing effective design strategies, engineers can enhance the resilience and safety of structures. Continuous research and development in materials science and structural analysis techniques will further aid in minimizing the risks associated with permanent buckling and ensuring the longevity of engineered systems.