双参数冲击荷载作用下弹性压杆的动力屈曲研究

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振动与冲击 ›› 2011, Vol. 30 ›› Issue (9) : 211-215.

论文

双参数冲击荷载作用下弹性压杆的动力屈曲研究

钟炜辉1; 郝际平1;雷蕾2

作者信息 +

Study on dynamic buckling of elastic compression bar under two-parameters impact load

ZHONG Wei-hui1; HAO Ji-ping1; LEI Lei2

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文章历史 +

摘要

作用在实际结构上的冲击荷载往往是相当复杂的，冲击荷载形式对结构动力屈曲有较大影响。对双参数冲击荷载作用下的弹性压杆动力屈曲进行研究，采用等价矩形脉冲对荷载进行简化。分别对理想的和初始几何缺陷的弹性压杆冲击屈曲进行分析和计算，并以两端简支和两端固定轴心压杆冲击屈曲作为算例，初步揭示了冲击荷载形式对轴心压杆动力屈曲的影响规律，获得了有价值的结论。

Abstract

The impact load acting on actual structure is often very complex, which has greatly influence on dynamic buckling of structure. The dynamic buckling of elastic compression bar under two-parameters impact load is studied, by simplifying the load with equivalent rectangular pulse. The impact buckling of ideal elastic compression bar and with initial imperfection are analyzed and calculated. Based on the examples of axial compression bars with both ends simple supported and fixed, the influence law of impact loading form on dynamic buckling of axial compression bar is initially revealed, and some valuable conclusions are drawn.

导出引用

钟炜辉;郝际平;雷蕾. 双参数冲击荷载作用下弹性压杆的动力屈曲研究[J]. 振动与冲击, 2011, 30(9): 211-215

ZHONG Wei-hui;HAO Ji-ping;LEI Lei. Study on dynamic buckling of elastic compression bar under two-parameters impact load[J]. Journal of Vibration and Shock, 2011, 30(9): 211-215