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Выведены две новые аÑимптотичеÑкие модели типа БуÑÑинеÑка, опиÑывающие длинные нелинейные продольные волны деформации в ÑтержнÑÑ… круглого ÑечениÑ. Ðти модели обобщены на Ñлучай ненулевой оÑеÑимметричной нагрузки на боковой поверхноÑти, а также на Ñлучай предварительно раÑÑ‚Ñнутого ÑтержнÑ. Проведено Ñравнение диÑперÑионных ÑвойÑтв и Ñолитонных решений новых моделей Ñ Ð¼Ð¾Ð´ÐµÐ»Ñми, полученными в прежних работах. Применён пÑевдоÑпектральный метод Ð´Ð»Ñ Ñ‡Ð¸Ñленного Ð¼Ð¾Ð´ÐµÐ»Ð¸Ñ€Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾Ð»Ð½Ñ‹Ñ… трёхмерных уравнений, опиÑывающих динамику нелинейно упругого ÑтержнÑ. Проведена ÑÐµÑ€Ð¸Ñ Ñ‡Ð¸Ñленных ÑкÑпериментов по возбуждению и Ñравнению Ñолитонов в рамках модели типа БуÑÑинеÑка и полной трёхмерной модели.
Two new Boussinesq-type models describing long nonlinear longitudinal strain waves in elastic rods of circular cross section derived. These models extended to include axially symmetric loading on the lateral surface and longitudinal pre-stretch. The dispersive properties and solitary wave solutions of these models compared with the ones of existing models. A pseudospectral method applied to perform numerical simulation of the full three-dimensional equations of motion in nonlinearly elastic rod. A series of numerical experiments is conducted in order to excite and compare solitons of Boussinesq-type model and the full model.
СолиÑонÑ, СÑеÑжни, ЧиÑленнÑе меÑодÑ, УпÑÑгоÑÑи ÑеоÑиÑ, пÑевдоÑпекÑÑалÑнÑй меÑод, ÐÐ¾Ð»Ð½Ñ Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ñе, Ð¼Ð¾Ð´ÐµÐ»Ñ Ñипа бÑÑÑинеÑка, обÑÑмнÑе Ð²Ð¾Ð»Ð½Ñ Ð´ÐµÑоÑмаÑии
СолиÑонÑ, СÑеÑжни, ЧиÑленнÑе меÑодÑ, УпÑÑгоÑÑи ÑеоÑиÑ, пÑевдоÑпекÑÑалÑнÑй меÑод, ÐÐ¾Ð»Ð½Ñ Ð½ÐµÐ»Ð¸Ð½ÐµÐ¹Ð½Ñе, Ð¼Ð¾Ð´ÐµÐ»Ñ Ñипа бÑÑÑинеÑка, обÑÑмнÑе Ð²Ð¾Ð»Ð½Ñ Ð´ÐµÑоÑмаÑии
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