Аннотация:
Рассмотрено переходное излучение упругих волн, возникающее при равномерном и прямолинейном движении механического объекта вдоль неоднородной упругой системы (струны, балки, мембраны, пластины). Эффект переходного излучения исследовался в условиях, когда закон движения нагрузки не допускает возникновения ни черенковского, ни тормозного излучения упругих волн, а в качестве неоднородности выступает закрепление упругой системы. Уделено внимание как спектру реакции излучения, так и разрыву контакта объект—упругая система. Исследованы важные для практических приложений случаи периодического и случайного изменения параметров упругой системы. Определены условия возникновения резонанса и неустойчивости колебаний излучающего объекта. Изучена зависимость основных характеристик излучения от угла пресечения объектом области неоднородности. Кратко обсуждено дифракционное излучение упругих волн.
Образец цитирования:
А. И. Весницкий, А. В. Метрикин, “Переходное излучение в механике”, УФН, 166:10 (1996), 1043–1068; Phys. Usp., 39:10 (1996), 983–1007
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/ufn1252
https://www.mathnet.ru/rus/ufn/v166/i10/p1043
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