Show simple item record

contributor authorMasoud
contributor authorYekani Fard
contributor authorAditi
contributor authorChattopadhyay
contributor authorYingtao
contributor authorLiu
date accessioned2017-05-08T21:34:02Z
date available2017-05-08T21:34:02Z
date copyrightJanuary 2014
date issued2014
identifier other%28asce%29as%2E1943-5525%2E0000228.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/56380
description abstractA piecewise-linear parametric uniaxial stress-strain approach has been used to obtain the nonlinear moment curvature response based on strain compatibility in bending for epoxy resin materials. It has been shown that the direct use of tension and compression stress-strain models underestimates the flexural strength of epoxy resin materials in a three-point bending (3PB) setup. An analytical and experimental investigation is conducted to better evaluate the degree of flexural overstrength for epoxy resin material. Four-point bending (4PB) and a round plate (RP) supported on three symmetrically arranged pivot points on a circle are chosen. An algorithm is developed to obtain the load-deflection response of the 4PB and RP samples from the nonlinear moment curvature curve. Small-sized 3PB tests are conducted to examine the size effects on the flexural response. The experimental nonlinear load-deflection responses obtained in the various load arrangements are satisfactorily simulated through the developed algorithm. The simulations and experiments reveal that the ratio of the experimental flexural strength to that obtained through simulation (flexural overstrength factor) in 4PB is higher than the corresponding values in 3PB and the round panel. The conservative value of 1.14 could be used as the flexural overstrength factor for epoxy resin materials in analysis and design.
publisherAmerican Society of Civil Engineers
titleInfluence of Load Type and Stress Gradient on Flexural Strength of Epoxy Resin Polymeric Material
typeJournal Paper
journal volume27
journal issue1
journal titleJournal of Aerospace Engineering
identifier doi10.1061/(ASCE)AS.1943-5525.0000228
treeJournal of Aerospace Engineering:;2014:;Volume ( 027 ):;issue: 001
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record