Calculations for spring in elastic and inelastic zones of deformation

It is known that springs work mainly in the elastic zone of deformation. However, with the emergence of a new class of materials, particularly those with shape memory effect, the working zone of spring deformation increases and can include the inelastic zone. Therefore, it is important to study spring deformation conditions beyond the elasticity limits. An analysis of composite coil springs with memory shape effect is presented; loading, unloading, and recovery force upon heating in the temperature range of phase transformation are considered. Recovery force is analyzed when the springs are connected in series or in parallel with springs without the shape memory effect. A dependence of the maximum recovery force upon loading at the moment of unloading is determined. The results for the springs connected in series and in parallel are compared. акже генерации реактивных усилий при их нагреве в области температур фазового перехода. Проанализирована генерация реактивных усилий пружины при совместной работе с пружиной, не обладающей эффектом памяти формы, при последовательном и параллельном соединении. Определена зависимость максимального реактивного усилия от нагрузки в момент разгрузки пружин. Выполнено сравнение полученных результатов при параллельном и последовательном соединении пружин.

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