基于ABAQUS的粘弹性动力人工边界精确自动施加  

Accurate Auto-application of Viscoelastic Dynamic Artificial Boundary Based on ABAQUS

作　　者：徐磊[1] 叶志才[2,3] 任青文[2] 杜小凯[4] 

机构地区：[1]河海大学水利水电工程学院,南京210098 [2]河海大学土木工程学院,南京210098 [3]宿迁市水务局,江苏宿迁223800 [4]中国水电工程顾问集团公司,北京100120

出　　处：《三峡大学学报（自然科学版）》2010年第1期20-23,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家重点基础研究发展计划973计划(2007CB714104);江苏省水利科技项目(2008032)

摘　　要：粘弹性动力人工边界在结构-地基动力相互作用问题的有限元分析中已得到了广泛的应用,但对于规模较大的复杂计算模型而言,粘弹性动力人工边界的施加存在着前处理工作量浩繁、施加精度不高等问题.为此,基于粘弹性动力人工边界理论及ABAQUS软件平台,提出了粘弹性动力人工边界精确自动施加方法,编制了相关程序并进行了验证.算例将本文方法和通常的近似施加方法进行了对比分析,结果表明,近似施加方法会引起较大计算误差,本文所提出方法的施加简便性、施加精度均优于通常的近似施加方法.The viscoelastic dynamic artificial boundary is widely applied in the dynamic analysis of structure- soil interaction; but the work of preprocessing is time-consuming and lack of precision for the complex numer- ical simulation. In this paper, the method of accurate auto- application of viscoelastic dynamic artificial bound- ary is presented based on the theory of viscoelastic dynamic artificial boundary and FEM software ABAQUS; and the corresponding program is developed and verified. The comparative analysis of the method mentioned above and the approximate method usually used is completed through a numerical example. The results show that the approximate method usually used may arise obvious calculation error; and the method of accurate auto-application of viscoelastic dynamic artificial boundary is convenient for application and has a higher precision.

关 键 词：粘弹性动力人工边界 ABAQUS 自动施加 

分 类 号：P315[天文地球—地震学]