Sizing and shape optimization material use in 10 bar trusses Nenad Petrović, Nenad Kostić, Vesna Marjanović, Ileana Ioana Cofaru and Nenad Marjanović MATEC Web Conf., 343 (2021) 04004 Published online: 04 August 2021 DOI: 10.1051/matecconf/202134304004