Exact least-volume trusses for two symmetric point loads and unequal permissible stresses in tension and compression

Exact least-volume trusses for two symmetric point loads and unequal permissible stresses in tension and compression Tomasz Sokół · George I. N. Rozvany Structural and Multidisciplinary Optimization January 2013, Volume 47, Issue 1, pp 151-155, Read online>> In this Authors' Reply previously presented solutions are extended to unequal permissible stresses in tension and compression, comments are made on the lack of adjoint displacement fields in so-called O-regions (memberless regions), and some computational details are explained.