CAJ | 학술논문

目的研究节理岩体的弹塑性动态本构关系,并进行数值模拟. 方法考虑动荷作用过程中,应力随时间变化这一应力历史,取单元为分离体,根据静力平衡原则,求出与之相应的节点集中力,再计算节点位移,得到节理岩体弹塑性动态有限元方程. 结果给出了一种节理岩体在动荷作用下的有限元分析方法. 结论通过动态有限元分析,有效地解决了节理岩体在爆炸载荷作用下的大塑性变形问题,并对爆破范围进行了数值模拟,从而向工程实用迈进了一步.
목적연구절리암체적탄소성동태본구관계,병진행수치모의. 방법고필동하작용과정중,응력수시간변화저일응력역사,취단원위분리체,근거정력평형원칙,구출여지상응적절점집중력,재계산절점위이,득도절리암체탄소성동태유한원방정. 결과급출료일충절리암체재동하작용하적유한원분석방법. 결론통과동태유한원분석,유효지해결료절리암체재폭작재하작용하적대소성변형문제,병대폭파범위진행료수치모의,종이향공정실용매진료일보.
Aim To study the elastic-plastic dynamical constitutive relations about a jointed rock mass under explosion load and its computer simulation. Methods Stress history is taken into account and stresses will follow changes in time during a period of explosion load. According to the principle of static force balance, the corresponding nodal concentrated force is calculated and the nodal displacement is counted. The elastic-plastic dynamic finite element equations are thus obtained. Results A finite element method is given for a jointed rock mass under explosion load. Conclusion The problem of large plastic deformation for jointed rock mass on blasting was efficiently resolved through dynamic finite element analysis and the range of damages by blasting simulated, and this pushes forward the problem to engineering practice.