摘要
本文应用显式分块多时步变时同步长的时间积分策略,提出材料小应变、大位移瞬态分析的有限单元法,该法使用随单元旋转的坐标系,给出计算效率很高的结点力计算列式.我们采用能量校核的方法,以保证计算的稳定性.文中给出实现这种计算的程序框图,数值计算实例表明,该程序可广泛的应用于三维非线性动力分析.
The time integration with explicit partitions varying time step for large displacement, small strain problems is presented.For purpose of treating arbitrarily large rotations,node orientations are described by unit vectors and deformal elements are treated by a co—rota- tional(rigid—convected)description.Energy balance calculations are provided to check nu- merical stability.The numerical results show that the program is quite versatile in treating complex engineering structures.
出处
《大连大学学报》
1992年第4期1-8,共8页
Journal of Dalian University
关键词
动力响应
能量校核
稳定性
Transient response
Energy balance calculation
Stability
