计算力学学报2019，Vol.36Issue(1)：21-26,6.DOI:10.7511/jslx20171009001
水力劈裂问题的态型近场动力学建模
State -based peridynamic modeling for hydraulic fracture
摘要
Abstract
The state-based peridynamic theory is introduced into solving hydraulic fracture problems.A nonlocal constitutive model which can describe the fracture characteristics of rock and concrete-like quasi-brittle materials is proposed based on the state-based peridynamic theory, in which an equivalent hydraulic pressure term is embedded in order to track the fluid pressure on the new-born crack surfaces.Considering the contact between surfaces of cracks, a short-range repulsive force between material points is implemented and corresponding contact algorithms are developed.The proposed model and algorithms are validated through simulating the hydraulic fracture of typical concrete gravity dams in different loading cases, and comparing the numerical results with extended finite element results.关键词
水力劈裂/裂纹扩展/态型近场动力学/接触/重力坝Key words
hydraulic fracture/crack propagation/state-based peridynamics/contact/gravity dam分类
数理科学引用本文复制引用
张钰彬,刘一鸣,黄丹..水力劈裂问题的态型近场动力学建模[J].计算力学学报,2019,36(1):21-26,6.基金项目
国家自然科学基金 (51679077, 11132003) （51679077, 11132003）
中央高校基本科研业务费 (2015B18314, 2017B13014) （2015B18314, 2017B13014）
江苏省自然科学基金 (BK20130822) （BK20130822）
NSFC-广东联合基金 (第二期) 超级计算科学应用研究专项资助项目. （第二期）
