Advances in Civil Engineering

Research Article

Optimal Prestress Investigation on Tensegrity Structures Using Artificial Fish Swarm Algorithm

Table 2

The feasible and uniform solutions of the initial self-stress modes.


Element	Independent self-stress modes						Feasible solution	Uniform solution
Element	1	2	3	4	5	6	Feasible solution	Uniform solution

1	0.0000	0.0000	0.0000	0.0000	0.0000	0.6957	0.2581	0.0933
2	0.4591	0.1106	0.2260	0.0779	−0.2576	0.2331	0.3027	0.0966
3	−0.2513	−0.0454	0.1434	0.0301	0.2535	−0.0318	0.1581	0.0849
4	−0.1045	0.1793	−0.2076	0.3980	0.1498	0.0516	0.4915	0.1054
5	0.0191	0.3259	−0.2514	0.4052	0.2368	0.0090	0.4655	0.0696
6	0.0773	−0.0445	0.2043	0.0915	0.2481	−0.0991	0.1376	0.0671
7	−0.2062	0.1181	0.0121	−0.0790	−0.3857	−0.0430	0.1115	0.0400
8	−0.2013	0.5075	0.2225	−0.2045	−0.2818	−0.0081	0.3089	0.0988
9	0.0735	−0.2800	−0.0326	0.2796	−0.0270	0.0385	0.1851	0.0699
10	−0.3498	0.2213	0.1655	−0.0638	0.0864	0.0979	0.3157	0.1236
11	−0.2773	−0.1574	0.2931	−0.2053	0.0860	0.1891	0.0281	0.0869
12	0.1096	0.0874	0.1530	0.1149	0.0670	−0.2260	0.1786	0.0572
13	−0.0643	0.2441	0.0016	0.2857	−0.2094	−0.1029	0.5418	0.1446
14	−0.0849	0.0485	0.1412	0.0078	−0.0914	−0.0929	0.1629	0.0700
15	0.0402	−0.0234	0.3864	0.1305	0.2678	−0.2061	0.3122	0.1451
16	0.1041	0.0471	0.1342	0.0662	0.0843	0.3133	0.2763	0.0996
17	−0.1006	−0.0627	0.1406	0.1389	−0.2825	−0.0300	0.3449	0.1374
18	−0.2019	−0.0348	0.1445	0.0322	0.2161	−0.0151	0.1625	0.0833
19	0.1456	0.0494	0.3249	0.0937	0.0249	0.1647	0.4029	0.1612
20	0.0584	0.1666	0.0092	0.1637	−0.0038	0.1403	0.3448	0.0902
21	0.0446	−0.1035	0.1388	0.2548	−0.2750	−0.1616	0.3690	0.1358
22	−0.1683	−0.1065	−0.0154	0.1142	−0.0499	0.0628	0.1796	0.0717
23	−0.3801	−0.2597	−0.0192	0.2323	−0.1268	0.1409	0.3759	0.1572
24	0.1337	−0.3760	0.1666	0.0901	−0.2091	−0.0643	0.0131	0.0531
25	−0.1163	−0.1360	−0.1756	−0.1736	−0.0462	−0.1570	−0.4440	−0.1446
26	0.0332	−0.0187	−0.2982	−0.0750	−0.0846	0.1704	−0.2725	−0.1229
27	0.1055	−0.1664	−0.0719	−0.1880	0.1323	0.1035	−0.4243	−0.1287
28	0.3000	0.1600	0.0515	−0.2433	0.0669	−0.1135	−0.3664	−0.1353
29	0.0333	0.1046	−0.0823	−0.2034	0.1926	−0.0137	−0.3343	−0.1249
30	0.0152	−0.0125	−0.2781	−0.0752	−0.1289	−0.0946	−0.3361	−0.1441

Note: the obtained coefficient vectors to form the feasible solution and uniform solution are (−0.3821, 0.5419, 0.7749, 1.3248, −0.2074, 0.3710) and (−0.1729, 0.0788, 0.3856, 0.3942, −0.0707, 0.1341), respectively.