Mathematics study of the continuum mechanics focusing on singularities

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Mainly on the mathematical modeling of fracture phenomena, we constructed the activity group CoMFoS (Continuum Mechanics Focusing on Singularities) in the Japan Society for Industrial and Applied Mathematics, and start the renewal of workshop. We get the results ; The modification of Griffith's energy balance theorem for the purpose of control theory on fracture phenomena, the proof of fundamental theorem in GJ-integral theory under nonlinearity of continuum mechanics, the application of GJ-integral method to shape optimization problem with Azegami's method, the construction of the Web site that carried contents of FreeFem++.