摘要
分析了扁拱在静载荷或动载荷作用下发生跳跃屈曲的原因。采用尖点突变理论建立悬链线形拱的跳跃屈曲模型,推导临界荷载公式,并采用Matlab工具计算及Ansys验算模型理论正确性,最后对上述两种方法所得值进行比较。
Shallow arch will happen snap-through buckling under the dead load or live load because of the elastic compression of the arch axis. In this paper, firstly build the snap-through buckling model of the catenary and the parabola arch, derivate the critical load equation. Getting the critical load by Matlab program and validating the model theory with Ansys, finally compare the values gotten by the above ways.
出处
《山西建筑》
2005年第14期51-52,共2页
Shanxi Architecture
关键词
扁拱
跳跃屈曲
尖点突变
临界荷载
shallow arches, snap-through buckling, cusp catastrophe, critical buckling
