Determination of strength in plastic stage of steel members with general cross-sections
| Author | Affiliation |
|---|---|
Werner, Frank | Weimar High School of Architecture and Building |
| Year | Start Page | End Page |
|---|---|---|
1995 | 139 | 144 |
Pateiktas bendras plastiškų plieninių konstrukcijų elementų, kurių skerspjūvis yra laisvos formos, stiprumo tikrinimo uždavinio formulavimas. Apkrovų atmainų skaičius neribojamas. Uždavinio matematinis modelis sudaromas taikant ekstreminį energetinį principą apie plastinį suirimą esant kintamai apkrovai. Uždavinys sprendžiamas skaitiniu būdu, sudalinant skerspjūvį į elementus ir taikant tiesinį matematinį programavimą.
The problem of determination of strength of steel structural member with general cross-sections in plastic stage is formulated and the solution procedure for this problem is presented. The mathematical model of problem is formulated on the basis of extremum principle about plastic failure under repeating loading. The solution of problem is obtained by numerical approach that requires the discretization of the cross-section into small element areas (elements) and solution of convex mathematical programming problem.