20.500.12556/RUL-120701 Comparison of numerically dissipative schemes for structural dynamics - generalized-alpha versus energy-decaying methods We revisit some existing time-stepping schemes for structural dynamics with the algorithmic dissipation that fall either into the class of generalized- methods or into the class of energy-decaying (and momentum-conserving) methods. Some of the considered schemes are designed for the second-order and some for the first-order form of the differential equations of motion. We perform a comparison (for linear dynamics) of their accuracy, dissipation, dispersion, as well as of the overshoot. In order to study how these features extend to nonlinear dynamics, we choose numerical tests on shell-like examples. Shell models are a difficult check for dynamic schemes because numerically stiff equations need to be solved as an effect of a large difference between the bending (and shear) and the membrane deformation modes. For the considered schemes we illustrate their ability to decay/dissipate energy, their ability to fully/approximately conserve the angular momentum, and nonlinear order of accuracy by error indicators. civil engineering thin-walled structures structural dynamics methods momentum-conserving methods stiff equations hell-like examples gradbeništvo gradbene konstrukcije dinamika konstrukcij implicitne sheme numerična disipacija posplošene metode metode ki disipirajo energijo in ohranjajo vrtilno količino toge enačbe primeri z lupinami primeri z lupinami true true true Angleški jezik Slovenski jezik Članek v reviji 2020-09-24 14:06:53 2020-09-24 14:06:57 2022-09-01 04:00:07 0000-00-00 00:00:00 2020 0 0 Str. 1-22 št. 107075 Letn. 157 dec. 2020 0000-00-00 PostprintKoncna PosredovanoVObjavo NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2022-09-23 624.07 0263-8231 10.1016/j.tws.2020.107075 29701379 26529536 RAZ_Lavrencic_Marko_2020.pdf RAZ_Lavrencic_Marko_2020.pdf 1 1C8662ED75FDFF2A64790A17DCDCAC74 a2a26c47d641f5f42b1d07f53f3ae98fe35d3ed99b9049436928512ee3f6713c 26912818-a1ba-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=135513 https://doi.org/10.1016/j.tws.2020.107075 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=135512 Fakulteta za gradbeništvo in geodezijo 0 0 0