脉冲子结构法在ABAQUS中的实现
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摘要
日益庞大复杂的结构对动力学建模仿真和动力学结构优化提出了更高的要求。脉冲子结构方法是一种能保持与精细化模型同等精度且求解高效的动态子结构方法,采用脉冲子结构法可以有效的提高计算效率。本文借助ABAQUS子程序接口UAMP使连接界面处的连接力和运动状态信息可以在子程序和主程序间传递,从而实现脉冲子结构和有限元子结构之间的连接模拟,将脉冲子结构法整合到ABAQUS当中,提高脉冲子结构法的易用性。通过数值算例,验证了连接模拟的正确性和高效性。
With the development of complicated structures, the requirements of structural analysis and dynamic structure optimization are increasing. Impulse substructure technique has the same precision as a refined model and has the advantage of high efficiency for solving the dynamic substructure. In this paper, in virtue of the subroutine UAMP in ABAQUS, the connection force, displacement, velocity and acceleration information can be communicated in the interface between the subprograms and main program so that the joint simulation of the impulse substructure and finite element substructure can be implemented. Then, the impulse substructure method is integrated into the ABAQUS, the applicability of this method is raised. It is proved by a numerical example that the joint simulation is accurate and efficient.
With the development of complicated structures, the requirements of structural analysis and dynamic structure optimization are increasing. Impulse substructure technique has the same precision as a refined model and has the advantage of high efficiency for solving the dynamic substructure. In this paper, in virtue of the subroutine UAMP in ABAQUS, the connection force, displacement, velocity and acceleration information can be communicated in the interface between the subprograms and main program so that the joint simulation of the impulse substructure and finite element substructure can be implemented. Then, the impulse substructure method is integrated into the ABAQUS, the applicability of this method is raised. It is proved by a numerical example that the joint simulation is accurate and efficient.
引文
[1]J RIXEN D.A dual craig-banpton method for dynamic substructuring[J].Journal of Computational an Aookied Mathematics,2004,168(1-2):383-391.
[2]J RIXEN D.Substructuring using impulse response functions for impact analysis.proceedings of the IMACXXVIII[C].Jacksonville,Florida USA,2010.
[3]董威利.月球探测器软着陆动力学分析及动态子结构技术研究[D].北京:北京理工大学,2015.
[4]DONG W L,LIU L,ZHOU S D,et al.Substructure synthesis in time domain with rigid-elastic hybrid joints[J].Aiaa Journal,2015,53(2):504-509
[5]VAN DER VALK P L C,RIXEN D J.An impulse based substructuring method for coupling impulse response functions and finite element models[J].Computer Methods In Applied Mechanics And Engineering,2014,275:113-137
[6]CHEN S L,LIU L,ZHOU S D,et al.Multi-domain substructures synthesis with general joints for the dynamics of large structures[J].Aip Advances,2017,7(10).
[2]J RIXEN D.Substructuring using impulse response functions for impact analysis.proceedings of the IMACXXVIII[C].Jacksonville,Florida USA,2010.
[3]董威利.月球探测器软着陆动力学分析及动态子结构技术研究[D].北京:北京理工大学,2015.
[4]DONG W L,LIU L,ZHOU S D,et al.Substructure synthesis in time domain with rigid-elastic hybrid joints[J].Aiaa Journal,2015,53(2):504-509
[5]VAN DER VALK P L C,RIXEN D J.An impulse based substructuring method for coupling impulse response functions and finite element models[J].Computer Methods In Applied Mechanics And Engineering,2014,275:113-137
[6]CHEN S L,LIU L,ZHOU S D,et al.Multi-domain substructures synthesis with general joints for the dynamics of large structures[J].Aip Advances,2017,7(10).