侧向冲击下高强圆钢管动力响应及参数分析

DYNAMIC RESPONSE AND PARAMETER ANALYSIS OF HIGH-STRENGTH CIRCULAR STEEL TUBE UNDER LATERAL IMPACT

文中对高强圆钢管在侧向冲击载荷作用下的整体和局部变形以及冲击力结果进行分析,探讨钢管在不同径厚比、冲击位置和冲击高度条件下的动力响应特性,以此研究其对钢管动力响应的影响规律。结果表明冲击高度和径厚比是影响钢管冲击力峰值和跨中变形的重要因素,冲击高度越大,冲击力峰值及跨中变形都越大,径厚比越大,冲击力峰值越小,跨中变形越大。分析结果为抗冲击结构设计和防护提供参考依据。

This paper presents a numerical analysis of the dynamic response of high-strength circular steel tubes subjected to lateral impact loads.By examining both the global and local deformations of the steel tubes,as well as the resultant impact forces,the dynamic response characteristics of the tubes under varying diameter-to-thickness ratios,impact locations,and impact heights are investigated to elucidate the influence of these parameters on the dy⁃namic behavior of the steel tubes.The findings indicate that impact height and diameter-to-thickness ratio are sig⁃nificant factors affecting the peak impact force and mid-span deformation of the tubes.Specifically,an increase in impact height results in higher peak impact forces and greater mid-span deformations,whereas a higher diame⁃ter-to-thickness ratio leads to lower peak impact forces but increased mid-span deformations.