Asimetrijos įtaka dviejų sluoksnių sijų stiprumui ir standumui

• Main Author: Juodris, Tomas
• Other Authors: Bargelis, Algirdas
• Format: Dissertation
• Language: Lithuanian
• Published: Lithuanian Academic Libraries Network (LABT) 2006
• Subjects: Mechanical Engineering; Dviejų sluoksnių sija; Two-layer beam
• Online Access: http://vddb.library.lt/fedora/get/LT-eLABa-0001:E.02~2006~D_20060613_113638-13021/DS.005.0.02.ETD

The majority of contemporary structural materials consist of composites, each component of which has a particular purpose in a product. Each component of composites has its concrete destination in the product. Recently the employment of two-layer structural elements is increasing because these elements allow producing constructions of the required characteristics. The multilayer structural elements have been used ever wider and wider because that makes it possible to obtain structures. To analysis two-layer beam, it consists from isosceles angle and stuff: carbon plastic or glass plastic. • Isosceles angle GOST 8509-72 100x100x12, which resilience module E = 208GPa. • Carbon plastic and glass plastic stuff: which resilience modules E = 60GPa; E = 20GPa. In this job I calculate all most important parameters of influence of asymmetry for stiffness and strength of two-layer beam. And when all calculation I externalize in schedule. Also I make drawings how will spread normal strain in construction.  From made calculation I made schedule we can see what multilayer beam stiffness growing then growing: material resilience modules; distance between out side layer to neutral layer, because when growing middle layer, when changing cross-section inertial moment of beam, from which consist construction.  Multilayer constructions are more useful than smooth constructions, because it’s cheaper, not so heavy, but they can keep enough big stiffness and strength.