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

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В рамках структурной модели среды в развитие идей В. В. Новожилова излагается взгляд авторов на проблему использования концепции микроразрушений в теории пластического течения.

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