摘要
在结构动力分析中提出了建立冲量方程并求解的方法,给出了该方法的积分格式并讨论了其数值稳定性、精度等数值特性.由于冲量平衡方程弱化了结构力的平衡,故需迭代求解,文中给出迭代格式并讨论了收敛性.算例结果与精确解的比较表明,该方法是可行和有效的.
Both the impulse equations of structural dynamics and the solution were established, and the numerical stability and accuracy of the integral formulation were also discussed. Because the equilibrium of impulse deteriorates the force equilibrium condition of the structure, the iteration is necessary to enforce the force equilibrium. Both the iteration formulation and its convergence were given. In the end, an example was analyzed to exemplify the feasibility and effectiveness of the presented method.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2006年第6期1042-1045,1049,共5页
Journal of Shanghai Jiaotong University
基金
国家重点基础研究发展规划(973)项目(2002CB412709)
关键词
动力分析
冲量方程
数值稳定性
迭代收敛性
dynamic analysis
equations in impulse
numerical stability
convergence of iteration
