Internal contact modeling for finite strain topology optimization

The present work proposes an extension of the third medium contact method for solving structural topology optimization problems that involve and exploit self-contact. A new regularization void region, which acts as medium, makes suitable cases with very large deformations. proposed is implemented in a second order framework, employs coupled simultaneous solution mechanical, design update, adjoint problems. All three are derived presented weak form, discretized finite elements order. capabilities accuracy developed demonstrated problem achieving desired non-linear force-displacement path.