An efficient 146-line 3D sensitivity analysis code of stress-based topology optimization written in MATLAB

This paper presents an efficient and compact MATLAB code for three-dimensional stress-based sensitivity analysis. The 146 lines includes the finite element analysis p-norm stress based on adjoint method. 3D global measure is derived explained in detail accompanied by corresponding code. correctness of analytical verified comparison with difference approximation. nonlinear optimization solver chosen as Method moving asymptotes (MMA). Three typical volume-constrained minimization problems are presented to verify effectiveness this can be extended resolve different related topology problems. complete program given Appendix intended educational purposes. additionally provided electronic supplementary material a simple cantilever beam optimization.