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Dynamic Buckling of Euler-Bernoulli Beam under Thermal Shock
Author(s): 
Pages: 16-20
Year: Issue:  1
Journal: Journal of Gansu Sciences

Keyword:  Euler-Bernoulli girderHamilton systemDnamic bucklingCritical load;
Abstract: 基于Euler-Bernoulli梁理论,在Hamilton体系中研究了一端固定一端不可移简支梁在热冲击载荷作用下的动态屈曲.在辛空间中,将梁的屈曲问题归结为系统的零本征值问题,而梁的屈曲模态对应Hamilton体系的辛本征解,求解得到了Euler-Bernoulli梁在横向热冲击下发生屈曲的临界载荷与屈曲模态,并分析了结构几何参数和热冲击载荷参数对临界升温的影响.结果表明:梁的长细比和载荷作用时间都对屈曲升温有较大影响,但载荷参数a对梁的屈曲升温影响很小.
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