Practical studies on rockfall simulation by DDA
نویسندگان
چکیده
منابع مشابه
Numerical Simulation of Pipeline Deformation Caused by Rockfall Impact
Rockfall impact is one of the fatal hazards in pipeline transportation of oil and gas. The deformation of oil and gas pipeline caused by rockfall impact was investigated using the finite element method in this paper. Pipeline deformations under radial impact, longitudinal inclined impact, transverse inclined impact, and lateral eccentric impact of spherical and cube rockfalls were discussed, re...
متن کاملInterdisciplinary Workshop on ROCKFALL PROTECTION
ii Preface Compared to other landslide movements, rockfall is an extremely rapid process with long travel distances. When an event occurs, the ability of persons to take evasive actions is almost reduced to zero and the risk of injury or loss of life is high. Damages to buildings and infrastructures are likely as well. In many cases suitable protection measures are thus necessary. The workshop ...
متن کاملSimulation of rockfall trajectories with consideration of rock shape
The aim of the paper is to develop a fully 3D simulation technique for rockfall dynamics taking rock shape into account and using the state-of-the-art methods of multibody dynamics and nonsmooth contact dynamics. The rockfall simulation technique is based on the nonsmooth contact dynamics method with hard contact laws. The rock is modeled as an arbitrary convex polyhedron and the terrain model ...
متن کاملOptimizing DDA Code on a POWER5 Processor
In this paper we take an existing scientific computation code, DDA, and optimize it to run on an IBM Power5 processor. The DDA code, originally developed by a Ph.D. candidate in physics, suffers from excessive execution time caused by a high number of cache accesses and a low rate of instructions per cycle. Our goal is to improve the code’s performance by making a series of optimizations in a s...
متن کاملHow fast do European conifers overgrow wounds inflicted by rockfall?
The capacity of trees to recover from mechanical disturbance is of crucial importance for tree survival but has been primarily investigated in saplings using artificially induced wounds. In this study, mature Larix decidua Mill., Picea abies (L.) Karst. and Abies alba Mill. trees growing on alpine slopes that were wounded by naturally occurring rockfall were analyzed to determine their efficien...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Rock Mechanics and Geotechnical Engineering
سال: 2011
ISSN: 1674-7755
DOI: 10.3724/sp.j.1235.2011.00057