mean(mean(shell.llem1.lsf1.s_f)) 1 "Tsai-Wu orthotropic safety factor"
mean(mean(shell.llem1.lsf2.s_f)) 1 "Hoffman safety factor"
mean(mean(shell.llem1.lsf3.s_f)) 1 "Tsai-Hill safety factor, plane stress"
mean(mean(shell.llem1.lsf4.s_f)) 1 "Azzi-Tsai-Hill safety factor"
mean(mean(shell.llem1.lsf5.s_f)) 1 "Norris safety factor"
mean(mean(shell.llem1.lsf6.s_f)) 1 "Tsai-Wu anisotropic safety factor"
mean(mean(shell.llem1.s_f_com)) 1 "Combined safety factor"