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利用结构的塑性变形原理研制的各种能量耗散装置对于减少车船碰撞事故的损失可以起到重大作用,因而近年来在许多国家受到很大重视.本文通过静、动力实验和塑性理论分析,研究了金属薄壁方管在轴向力作用下产生“开裂与卷曲”破坏模式的机理和规律,阐明了这种能量耗散装置具备行程长和承载能力稳定等优点,有良好的应用前景.
Various energy dissipating devices developed by using the principle of plastic deformation of structure can play a significant role in reducing the loss of collisions between vehicles and ships and thus have gained great attention in many countries in recent years.Through static and dynamic experiments and plasticity theory analysis, The mechanism and rule of “cracking and curling” failure modes of metal thin-walled square tube under the action of axial force are clarified. This energy dissipation device has the advantages of long stroke length and stable carrying capacity, and has a good application prospect.