Greenstick fracture in composite pultruded rods

被引：1

作者：

Vargas, G. ^{[1
]}

Mujika, F. ^{[1
]}

机构：

[1] Univ Basque Country, Mat Technol Grp, Dept Mech Engn, Plaza Europa 1, Donostia San Sebastian 20018, Spain

来源：

COMPOSITES PART B-ENGINEERING | 2017年 / 110卷

关键词：

Fracture; Analytical modeling; Mechanical testing; Pultrusion; BONE; STRESSES;

D O I：

10.1016/j.compositesb.2016.11.001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper analyses the greenstick fracture mode on anisotropic beams subjected to flexural loading. This fracture mode can be seen in plant branches, young mammal bones or reinforced plastic rods. Two analytical models have been studied: a straight beam model and a uniform curved beam model. Circumferential normal stress distribution has been determined considering the classical beam theory, and radial and shear stresses have been predicted by using the Airy's stress function. Experimental work has been implemented on initially straight pultruded rods with longitudinally oriented fibres. Three and four-point bending tests adopting several span-to-diameter ratios have been performed. Experimental conditions that promote a greenstick fracture mode in composite pultruded rods have been considered. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：106 / 115

页数：10

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