On the sensitivity of large precision space structures of high-modulus fibrous polymer composite materials to microdynamical effects

Article

Published: 11.03.2020

Published in issue: #3(99)/2020

DOI: 10.18698/2308-6033-2020-3-1963

Category: Metallurgy and Science of Materials | Chapter: Powder Metallurgy and Composite Materials

The paper considers the problem of sensitivity of large precision space structures made of high-modulus fibrous polymer composite materials to external and internal microdynamic effects. This problem is related to the extent of structure forming elements, as well as to an abrupt increase in the elastic modulus of the material when passing the threshold of low stresses. It is found that under low loading in the orbital flight conditions the calculated values of the elastic modulus of large precision space structures made of high-modulus fibrous polymer composite materials may be higher than the real ones by more than 20 times, which must be taken into account in the calculations. Possible ways to reduce the sensitivity of such space structures made of high-modulus fibrous polymer composite materials to external and internal microdynamic effects are shown.

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