LI Changsheng- Ph.D
- East China University of Technology
LI Changsheng
- Ph.D
- East China University of Technology
developing a GPU-based discrete element software, see www.geovbox.com
About
16
Publications
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188
Citations
Introduction
(1). Structural Geology
(2.) Discrete Element Model and Analogue Model
(3). High Performance Computing (OpenMP, GPU)
(4). I used discrete element model (DEM) and analogue model (AM) experiment to quantify and simulate the the evolution of thrust wedge. Quantitative field data and laboratory data, are combined with computer modeling, to help establish robust features of tectonic models on the scale of the upper crust.
Recently, I am working on a parallel Discrete Element Model based on CPU/GPU.
Skills and Expertise
Current institution
East China University of Technology
Education
September 2014 - March 2019
Publications
Publications (16)
In recent years, the discrete element method (DEM) has become widely used to solve a number of geological and geophysical problems. The basic idea of this method is to consider rock-soil bodies, in their discontinuous nature, as a set of discrete elements. It is generally recognized that this type of complex model must be validated through comparis...
The discrete element method (DEM) is becoming widely accepted as an effective method for addressing tectonic problems in granular materials. It is capable of reproducing structures observed in the analog model (AM). However, the previous experiments also pointed to variability among DEM models and AMs in the number of fault zones, their dip angle a...
The salt layer is critical for the structural deformation in the salt-bearing fold-and-thrust system, which not only acts as the efficient décollement layer but also flows to form salt tectonics. Kuqa Depression has a well-preserved thin-skinned fold-and-thrust system with the salt layer as the décollement. To investigate the effects of salt thickn...
With the help of such date structure and changing the neighbor search algorithm based on grid, the lock-free parallel computing of discrete element method was achieved, and an efficient program of discrete element method was written in the C language. As a test case, a rock specimen was simulated under uniaxial compression by using the solid lattic...
The thin-skinned fold-and-thrust belt with multiple detachments in the eastern Sichuan Basin is characterized by a series of fault-detachment folds with a backward preferred structural vergence, which is rare in nature and can't be explained well by the classic critically taper theory. Here, three discrete element simulations were conducted to stud...
Four groups of discrete element models (DEMs) were set-up to simulate and analyze the influence of regional erosion and sedimentary loading on the formation and spatial-temporal evolution of faults in the southern and central Longmen Shan (LMS) active fold-thrust belt. The interior characteristics of faults in the southern and central LMS fold-thru...
The northwestern Sichuan Basin has experienced Meso-Cenozoic intracontinental compressional tectonic processes and formed multi-detachment stratigraphic distribution of foreland basins and fold-thrust belts, which have caused complicated structural deformations in the deep buried layers. Rapid uplift with accelerated erosion and two sets of detachm...
The Kuqa depression is associated with complex salt structures. Variation in fold geometries and subsalt fault activities were investigated using parallel cross-sections to reveal detailed along-strike variations within the Keshen 5 segment and their controlling factors. Along-strike variations were identified in both suprasalt and subsalt units. L...
VBOX全称virtual sandbox,即虚拟沙箱软件，是一个用于构造变形研究的二维离散元（DEM）软件。2014年开发，采用C语言编写，并用OpenMP完成了并行设计，已获软件著作权。主要面向构造模拟，用来补充构造物理沙箱实验在应力应变及材料选取上的局限性，为构造变形研究提供一种新的方法。 VBOX(virtual sandbox) is a 2D DEM program to simulate the geological and geophysical problems. It is developed with C-language,
离散元（Discrete Element Method, DEM）数值模拟是研究构造变形过程与变形机制的重 要方法，在一定程度上突破了物理模拟存在的流变学和比例化问题。与其他连续体数值模拟 方法相比，DEM 采用颗粒相互作用来模拟系统的动力学机制，因此实验者可以对系统的运 动演化进行模拟和观测。另外由于它允许颗粒间较大相对位移，可以更好地模拟高度形变， 尤其适合研究构造变形相关的地质问题。
The Kuqa foreland basin, adjacent to the South Tianshan Mountains, is a major hydrocarbon accumulation basin in Western China. The Kelasu structural belt is the focus for hydrocarbon exploration in the basin due to the presence of ramp-related anticline traps and a thick salt seal. The model of the Kelasu sub-salt structure is still contentious bec...
The application of strain analysis and fracture prediction technology is of great importance in geosciences. However, the
discrete element method (DEM), which is suitable for solving problems with discontinuous property, has not been widely used in this
field. This paper presents an attempt to construct DEM model of a bulk of rock with realistic pr...
Sections of the image information of soil-rock mixture are obtained by CT scanning, the point cloud data of gravel surface are extracted by technology of image binarization and boundary recognition. By using Geomagic Studio, a reverse engineering software, three-dimensional geometric model of the gravel is reconstructed and the geometric model of g...
