Stability Analysis of a Three-Layer Shell with Lightweight Filler Supported By Rigidity Ribs

Abstract

An analysis of the stability of sloping and circular three-layer shell structures with light transversal-isotropic filler, supported by rigidity ribs in the longitudinal and transverse directions is considered in paper. The quantitative dependences of the parameters of the stability loss on the physical and mechanical properties of the materials and the dimensions of these three-layer supported shells were obtained. The critical loads of freely supported three-layer shells with lightweight filler of four types which supported by one and three ribs in the longitudinal and transverse directions are given. The expediency of introducing rigidity ribs in three-layer shells is substantiated.