I need a FEA software for nonlinear dynamic analysis of Masonry Structure. Some of software I know, but they are expensive. Please suggest some FEA software for analysis.
The Open System for Earthquake Engineering Simulation (OpenSees) is a software framework for simulating the seismic response of structural and geotechnical systems. OpenSees has been developed as the computational platform for research in performance-based earthquake engineering at the Pacific Earthquake Engineering Research Center.
Take a look at Code Aster. It now has Aster Study to provide an integrated environment, it can do most kinds of analyses, has an active user forum and - it is fairly straightforward to tweak as it executes in Python.