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Progressive Collapse Of Towers: Resistance Effect

机译:塔逐渐倒塌:阻力效应

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The former belief of mechanical engineers that progressive collapse is a free fall has been just recently refuted in the paper "Mechanics of the WTC collapse" by Cherepanov published in Int. J. Fracture (2006) 141: 287-289. The present paper uses the model of progressive collapse advanced in that paper but analyzed only using an additional assumption of zero resistance. The effect of resistance slows down the progressive collapse. Applying this analysis of dynamics of progressive collapse to the New York events on September 11, 2001 shows that the collapses of twin towers of the World Trade Center started from a floor located significantly lower than the floors hit by terrorists and subjected to fire.
机译:机械工程师以前认为渐进式崩溃是一种自由落体的信念最近在Chertovov在Int发表的论文“ WTC崩溃的力学”中被驳斥了。 J.骨折(2006)141:287-289。本论文使用该论文中先进的渐进塌陷模型,但仅使用零电阻的附加假设进行分析。抵抗的影响减缓了渐进的崩溃。在2001年9月11日的纽约事件中,对这种逐步倒塌的动力学进行的分析表明,世界贸易中心双子塔的倒塌是从明显低于恐怖分子袭击并遭受火灾的地板开始的。

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