Author:
Pestrenin V M,Pestrenina I V,Rusakov S V,Gilev V G,Buzmakova G V
Abstract
Abstract
A computational-experimental method for studying the packaging and unfolding of shell structures made of composite material is proposed. The construction consists of rigid elements interconnected by elastic hinges made of uncured prepreg. This material is elastic and therefore it can store an elastic energy during the structure packaging, and later a stored energy will facilitate unfolding. The hinge’s material is modelled by a hyper elastic isotropic medium, the Neo-Hookean potential is applied. The parameters of the potential are determined by the computational-experimental method. The viscous and viscoelastic characteristics of the binder are determined by the rheological method with a Physica MCR 501 rotational rheometer. The calculated effective properties of the hinge’s material are used to demonstrate the packaging of the cylindrical shell. Three different packaging methods for a cylindrical shell with six prepreg hinges are considered. The article studies the dependence of the load required for packaging on the type of packaging and the curing degree of the binder.