胶合板悬臂挠度

IF 0.7 4区 农林科学 Q4 MATERIALS SCIENCE, PAPER & WOOD Drvna Industrija Pub Date : 2023-03-25 DOI:10.5552/drvind.2023.0053
Alma Žiga, J. Kačmarčik
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引用次数: 0

摘要

本文分析了三层胶合板悬臂梁在弯曲过程中的弹性行为。采用分析和有限元方法,通过实验确定了自由端受力的直和半圆悬臂的挠度,并对其进行了计算。利用一个变换的横截面,得到了海峡悬臂挠度的解析计算。半圆悬臂梁的挠度由经典的层合板理论和Castigliano定理确定。在实验设计的研究中,载荷和悬臂尺寸是不同的。根据试验结果,建立了直、半圆胶合板悬臂梁的挠度回归模型。通过分析和数值确定海峡和半圆悬臂的挠度显示出非常好的一致性。实验记录的挠度比分析值高出约30%。刚度特性和挠度值受三层胶合板梁外层纤维方向的影响。
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Plywood Cantilever Deflection
In this paper, the elastic behaviour in bending of three-layer plywood cantilever beams is analysed. Deflections of straight and half-circle cantilevers, loaded with a force at free end is determined experimentally and calculated using analytical and finite element method approach. The analytical calculation of deflection for the strait cantilever is obtained using a transformed cross section. The deflection of half-circle cantilever is determined by the classical laminated plate theory and Castigliano’s theorem. Loads and cantilever dimensions are varied in the study using the design of experiment. The deflection regression models for straight and semicircular plywood cantilevers are obtained from the experimental results. Analytically and numerically determined deflections of strait and half-circle cantilevers show very good agreement. Experimentally recorded deflections are approximately 30 % higher than analytical values. Stiffness properties and deflection values are influenced by direction of fibres in the outer layers of a three-layer plywood beam.
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来源期刊
Drvna Industrija
Drvna Industrija MATERIALS SCIENCE, PAPER & WOOD-
CiteScore
1.80
自引率
9.10%
发文量
32
审稿时长
>12 weeks
期刊介绍: "Drvna industrija" ("Wood Industry") journal publishes original scientific and review papers, short notes, professional papers, conference papers, reports, professional information, bibliographical and survey articles and general notes relating to the forestry exploitation, biology, chemistry, physics and technology of wood, pulp and paper and wood components, including production, management and marketing aspects in the woodworking industry.
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