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| Development and verification of Python-based and explicit algorithm-oriented modeling program for viscous-spring boundary and seismic force |
| Received:January 02, 2024 Revised:March 07, 2024 |
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| DOI：10.7511/jslx20240102002 |
| KeyWord:viscous-spring boundary seismic motion input explicit algorithm Python language secondary development of ABAQUS |
| Author | Institution |
| 陈志超 |
天津大学 水利工程智能建设与运维全国重点实验室, 天津 ;天津大学 建筑工程学院, 天津 |
| 柳国环 |
天津大学 水利工程智能建设与运维全国重点实验室, 天津 ;天津大学 建筑工程学院, 天津 |
| 费琦翔 |
天津大学 水利工程智能建设与运维全国重点实验室, 天津 ;天津大学 建筑工程学院, 天津 |
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| Abstract: |
| A Python-based visual interface program tailored for explicit algorithms was developed,by which it is convenient to achieve the efficient modeling of 3D viscoelastic boundary and automatic application of the equivalent seismic force and realize the seamless docking with known commercial software ABAQUS accurately.The meaning of the explicit algorithm tailored interface program and its differences with the original external and implicit algorithm tailored programs are expounded.An approach of using the two-point spring-dashpot element to replace the ground spring-dashpot element is proposed to solve the inherent incompatibility issue of a ground spring-dashpot element in the explicit algorithm,and then its feasibility and accuracy are verified,which lays the prerequisite theoretical foundation for the subsequent program development.Then,the hysteresis-effect analytical solutions used in the program of the nodal equivalent seismic force for P,SV and SH waves at vertical incidence are derived and given with clear physical meaning and theoretical completeness.The underlying logic,flowchart and key functions of the program development are clarified.Finally,an example of vertical incidence of P,SV and SH waves is taken to verify the absorption effect of the intelligent viscous-spring boundary on the scattered wave and the results are consistent with classical theoretical ones.The results of this paper can be used in the scientific research and engineering practice of boundary-soil-structure interaction. |
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