| 在冲击载荷作用下结构大变形的挠度估计 |
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| 引用本文： | 华自力,余同希.在冲击载荷作用下结构大变形的挠度估计[J].爆炸与冲击,1988,8(4):306-315. |
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| 作者姓名： | 华自力 余同希 |
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| 作者单位： | 北京大学力学系
(华自力)，北京大学力学系(余同希) |
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| 摘 要： | 参照Martin和Ponter关于冲击载荷作用下塑性结构大变形的最终挠度的上限定理,从能量平衡的角度提出了一种在冲击载荷作用下结构挠度的估计方法。对刚塑性材料制成的圆板梁和圆环,给出了最终挠度的估计表达式,同已有的解作了比较,讨论了支承条件的影响,从而说明了这是一种在工程上十分实用的良好近似方法。
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| 关 键 词： | 上限 冲击 大变形 结构 |
A METHOD OF ESTIMATING THE LARGE DEFLECTION OF STRUCTURES UNDER IMPULSIVE LOADING |
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| Hua Zili Yu Tongxi.A METHOD OF ESTIMATING THE LARGE DEFLECTION OF STRUCTURES UNDER IMPULSIVE LOADING[J].Explosion and Shock Waves,1988,8(4):306-315. |
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| Authors: | Hua Zili Yu Tongxi |
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| Abstract: | In this paper, based on equilibrum of energy, we suggest a new method of estimating the upper bpund of. final large plastic deflections of impulsively loaded structures refer to the upper bound theorem of Martin and Ponter. we get approximate expressions of final deflections of rigid plastic circular plates, beams and circular rings by this method, and compare them with other solutions. Effects of boundary conditions are discussed. We believe that this is a very useful approximate method in engineering practice. |
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| Keywords: | upper bound impulse large deflections structure: |
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