|
Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2014, Volume 55, Issue 1, Pages 57–65
(Mi pmtf1100)
|
|
|
|
This article is cited in 1 scientific paper (total in 1 paper)
Strength calculations and optimal weight design of multilayer shell-shaped composite products under a set of loads
V. I. Butyrin, V. N. Maksimenko, L. V. Pavshok, B. S. Reznikov Novosibirsk State Technical University, Novosibirsk, 630092, Russia
Abstract:
The stress-strain state of axisymmetric multilayer shells is analyzed using kinematic and static hypotheses that allow for the transverse shear stresses satisfying the necessary equations of state, continuity conditions at the boundaries between the layers and given boundary conditions. A numerical solution of the problem of the stress–strain state for a multilayer bar is compared with the Lekhnitskii solution (for a cantilever beam loaded by a concentrated force and moment) to asses the applicability of the employed bending equations of multilayer shells. It is shown that these solutions are in good agreement. The problem of the initial fracture of the shells considered is formulated using phenomenological strength criteria for each layer. A coordinate-wise descent method in the unit interval is proposed to solve weight optimization problems for multilayer shells of composite materials under combined loading. Regions of safe operating loads and the optimal weight distribution of layer thicknesses are determined for a multilayer bar acted upon by a uniformly distributed load and concentrated force.
Keywords:
multilayer shells, composite material, set of loads, strength, optimal weight design, coordinate-wise descent method in the unit interval.
Received: 15.04.2013 Revised: 10.06.2013
Citation:
V. I. Butyrin, V. N. Maksimenko, L. V. Pavshok, B. S. Reznikov, “Strength calculations and optimal weight design of multilayer shell-shaped composite products under a set of loads”, Prikl. Mekh. Tekh. Fiz., 55:1 (2014), 57–65; J. Appl. Mech. Tech. Phys., 55:1 (2014), 44–51
Linking options:
https://www.mathnet.ru/eng/pmtf1100 https://www.mathnet.ru/eng/pmtf/v55/i1/p57
|
Statistics & downloads: |
Abstract page: | 41 | Full-text PDF : | 13 |
|