热张紧对外刮刀圆锯片动态稳定性影响的研究

IF 1.1 4区农林科学 Q3 FORESTRY

Forest Products Journal Pub Date : 2023-05-01 DOI:10.13073/fpj-d-23-00014

Bo Li, Mingyang Yu, Qingdong Zhang

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引用次数: 0

摘要

先前有学者提出并证明热张紧对改善理想圆盘结构圆锯片的动态稳定性是有效的。随着圆锯片结构的多样化，外刮刀圆锯片因其具有优异的抗锯切热应力性能而受到市场的广泛青睐。对于带外刮刀的圆锯片，热张力对叶片动态稳定性的影响有待进一步研究。因此，采用有限元法建立了外刮刀圆锯片的热张过程。计算和分析了不同结构圆锯片热张后的应力场和临界转速。阐明了圆锯片结构、圆锯片动态稳定性与热张过程之间的关系。结果表明，并非所有类型的圆锯片都适用热张紧。对于外刮刀圆锯片，热张紧对提高叶片临界转速的作用随着外刮刀数量的增加而逐渐降低。当圆锯片热张时，叶片外缘的平均切向应力和叶片的临界转速较高。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Research on the Effect of Heat Tensioning on the Dynamic Stability of Circular Saw Blades with External Scrapers

Heat tensioning was proposed and proved to be effective for improving the dynamic stability of circular saw blades with ideal disk structure by a previous scholar. With the diversification of circular saw blade structure, circular saw blades with external scrapers are widely favored by the market because of their excellent resistance to sawing thermal stress. For circular saw blades with external scrapers, the effect of heat tensioning on the dynamic stability of the blades needs to be further studied. Therefore, the heat tensioning process of circular saw blades with external scrapers was built by the finite element method. The stress field and critical rotational speed of circular saw blades with a different structure after the heat tensioning process were calculated and analyzed. The relationships between circular saw blade structure, the dynamic stability of circular saw blades, and the heat tensioning process are clarified in this article. The results show that heat tensioning is not valid for all types of circular saw blades. For circular saw blades with external scrapers, the effect of heat tensioning on improving the critical rotation speed of the blades is gradually decreased with the number of external scrapers. When circular saw blades are heat tensioned, the average tangential stress of the outer edge of the blades and the critical rotation speed of the blades are higher.

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来源期刊

Forest Products Journal 工程技术-材料科学：纸与木材

CiteScore

2.10

自引率

11.10%

发文量

审稿时长

6-12 weeks

期刊介绍： Forest Products Journal (FPJ) is the source of information for industry leaders, researchers, teachers, students, and everyone interested in today''s forest products industry. The Forest Products Journal is well respected for publishing high-quality peer-reviewed technical research findings at the applied or practical level that reflect the current state of wood science and technology. Articles suitable as Technical Notes are brief notes (generally 1,200 words or less) that describe new or improved equipment or techniques; report on findings produced as by-products of major studies; or outline progress to date on long-term projects.