Bending deformation of bamboo-wood sandwich beam based on the plastic area extension across the cross section

XU Wei-qun

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Volume 25 Issue 1

Jun. 2018

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Article Navigation > Journal of Zhejiang A&F University > 2008 > 25(1): 11-15

XU Wei-qun. Bending deformation of bamboo-wood sandwich beam based on the plastic area extension across the cross section[J]. Journal of Zhejiang A&F University, 2008, 25(1): 11-15.

Citation:

XU Wei-qun. Bending deformation of bamboo-wood sandwich beam based on the plastic area extension across the cross section[J]. Journal of Zhejiang A&F University, 2008, 25(1): 11-15.

Bending deformation of bamboo-wood sandwich beam based on the plastic area extension across the cross section

XU Wei-qun

1.
School of Engineering, Zhejiang Forestry College, Lin'an 311300, Zhejiang, China

Received Date: 2007-01-05
Rev Recd Date: 2007-09-18
Publish Date: 2008-02-10

Abstract

Bamboo-wood composites have been studied widely and deeply, especially in the effects of technological conditions on the mechanical properties. The bamboo-wood sandwich beams are often damaged by bending. With the application of the stress evolution regularity on the perfect elasto-plastic material extension, the plastic areas across the cross section are divided into four steps. And a calculation model of predicting the bending behaviors is presented based on the plane hypothesize. The relations of the theoretic moment and the instantaneous maximum stress across the cross section are analyzed though a case. The theoretical deflections in four stages based on the obtained solution agree well with the available results from experiments, the maximum difference less than 6%. It indicates that the calculation model is effective to predict the ultimate strength and bending deformation, and important to optimize design for structure.
- forest engineering,
- bamboo-wood composite sandwich beam,
- bending deformation,
- calculation model

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Bending deformation of bamboo-wood sandwich beam based on the plastic area extension across the cross section

XU Wei-qun

1. School of Engineering, Zhejiang Forestry College, Lin'an 311300, Zhejiang, China

Received Date: 2007-01-05
Rev Recd Date: 2007-09-18
Publish Date: 2008-02-10

Key words:

Abstract: Bamboo-wood composites have been studied widely and deeply, especially in the effects of technological conditions on the mechanical properties. The bamboo-wood sandwich beams are often damaged by bending. With the application of the stress evolution regularity on the perfect elasto-plastic material extension, the plastic areas across the cross section are divided into four steps. And a calculation model of predicting the bending behaviors is presented based on the plane hypothesize. The relations of the theoretic moment and the instantaneous maximum stress across the cross section are analyzed though a case. The theoretical deflections in four stages based on the obtained solution agree well with the available results from experiments, the maximum difference less than 6%. It indicates that the calculation model is effective to predict the ultimate strength and bending deformation, and important to optimize design for structure.

XU Wei-qun. Bending deformation of bamboo-wood sandwich beam based on the plastic area extension across the cross section[J]. Journal of Zhejiang A&F University, 2008, 25(1): 11-15.

Citation:

XU Wei-qun. Bending deformation of bamboo-wood sandwich beam based on the plastic area extension across the cross section[J]. Journal of Zhejiang A&F University, 2008, 25(1): 11-15.

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