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The self‐healing behaviors of sulfobetaine amphoteric polyacrylamide/chromium (SPAM/Cr) gel are investigated. The role of chemical composition, including different types of polyacrylamide, acid, and sodium sulfate, in the gel synthesis process as well as the gel's self‐healing ability are studied and compared. It is found that the chemical structure with electrostatic discharge repulsion and hydrophobic...
In this study, the effect of clamping force on the bolted double-lap joints has been investigated experimentally. The mechanical behavior of the present joint has been divided into several stages based on the sequence of failure. The commencement failure occurred in such joint is the sticking failure, i.e., loose of clamping effect. One of the main objectives of present investigation is to study the...
A cellular automata method is an efficient method that can simulate the process of self-organization of the complex system by constructing some simple local rules, which is fit to study material failure. In order to make full use of the advantages of cellular automata such as its intrinsic parallelism, localization and so on cellular automata model were presented to study the failure process of the...
Based on the actual geology situation of district in Tongchuan some mine, the influence on the stability of surrounding rock of roadway, the stress distribution rule on coal pillar and the distribution rule of plastic area was studied by numerical simulation and theoretical analysis method, the results show that it is not simple linear relations between the width of coal pillar and the deformation...
Rock fracture process that shows strong nonlinearity and complexity is simulated by cellular automata method. Cellular automata are considered as an efficient method to simulate complex system and study mechanisms of physical phenomena due to their locality and parallelization. In this paper rock samples can be discretized into cell elements that are connected with beam elements. Force and displacement...
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