Discrete element modeling of self-healing processes in damaged particulate materials

摘要: The self-healing behaviour of materials with a particulate microstructure, which has experienced damage under uniaxial compression or tension, is studied the Discrete Element Method. stress-strain response particle system shows that effective compressive and tensile strengths typically increase contact adhesion (i.e., strength between particles), where about 5 times larger than strength. A sample “weak” self-healed by instantaneously increasing at different deformation levels from weak to “strong”. curves samples are bounded an envelope curve reflects “strong” since onset loading. If applied short before peak stress reached, maximum will be close observed in curve. In contrast, if initiated softening regime, (significantly) less related