摘要
以稳定度能量判定准则为基准,推导出结构的能量变化,刚度矩阵正定性及动力稳定性之间的关系。运用ANSYS和MATLAB软件对三杆空间桁架进行模拟计算并定义荷载稳定度判定准则,分析不同荷载情况下的动力稳定性。结果表明,利用能量的变化来判定结构的动力稳定性是可行的,稳定度判定准则判定过程方便,判定结果直观。
According to the situation of structure schedule and based on the benchmark of stability energy criterion , the paper deduced the change of energy of the structure and the relationship between the stiffness matrix qualitative and the dynamic stability. It is concluded that it is feasible to assess the dynamic stability of structure by assessing the change of energy. The paper use ANSYS and MATLAB to simulate the three pole space truss for computation load stability and defined criteria, and analysis the dynamic stability under different load conditions. The result shows that the stability criterion decision process is convenient and intuitive.
出处
《四川建筑科学研究》
北大核心
2015年第4期20-24,共5页
Sichuan Building Science
基金
国家青年科学基金项目(51008245)
