Implementation and validation of a strain rate dependent anisotropic continuum model for masonry

• A strain rate dependent anisotropic continuum model for masonry is proposed.
• The numerical simulation of responses of unreinforced masonry walls is performed to validate the capability of the model.
• The influence of tensile strength on maximum deflection and crack patterns of the masonry wall is evaluated.
• At higher strain rates, the use of proper material properties according to the actual strain rate is recommended.

A newly developed strain rate dependent anisotropic continuum model is proposed for impact and blast applications in masonry. The model presented adopts the conventional approach of considering different yield criteria in tension and compression. The analysis of unreinforced block work masonry walls subjected to impact was performed to evaluate model performance. Comparison of the numerical predictions and test data revealed good agreement. Next, a parametric study was conducted to evaluate the influence of the tensile strengths in the three orthogonal directions and of the wall thickness on the global behavior of masonry walls.