ZHU Ai-jun, DENG An-fu, ZENG Xiang-yong. Numerical manifold method for simulation of excavation unloading in geotechnical engineering[J]. 2006, 27(2).DOI:
Based on the relative independence of mathematical cover and physical grid
and considering the action of truely existent various equilibrant force in system for system balance
a method of simulation for excavation unloading using numerical manifold method in geotechnical engineering is proposed. Compared with the traditional numerical method
the numerical manifold method need not calculate the released load on excavation face
need not prepare special element for unloaded material part; simple mathematic grid can meet the arbitrary course of excavation; so it is more convenient and effective; at the same time
high-order manifold method has better precision for excavation.