Проектирование вафельных оболочек топливных баков ракеты с учетом пластических деформаций

Проектирование вафельных оболочек топливных баков ракеты…

Инженерный журнал: наука и инновации

# 11·2017 13

Designing honeycomb shells for rocket fuel tanks

accounting for plastic deformations

Bauman Moscow State Technical University, Moscow, 105005, Russia

We suggest a method and a program for designing a honeycomb type rocket tank in the

case of the shell losing its stability under plastic deformations. The computations in-

volve designing the fuel tank, accounting for general and local stability losses for the

shell on the whole and a specific cell at once. We assume that the minimum mass of the

tank shell corresponds to the moment when general and local critical forces in the shell

are equal to the assumed analytically determined failure load. We provide computation

examples and a look at the user-friendly software interface. Stiffened shell design that

takes the plasticity zone into account makes it possible to noticeably widen the range of

loads affecting the fuel tank and to use the capabilities of its material more fully.

Keywords:

stiffened shell, honeycomb type, rocket, tank, elastic and plastic strain, gen-

eral and local stability losses, critical forces, analytically determined failure load

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