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| 1 | A NEW CONDITION FOR CERTAIN TRIGONOMETRIC SERIES显示文摘现在的纸建议一个新自然弱条件代替 thequasimonotone 和 O 定期变化的伪单调条件,并且显示出主要结果的结论在[10 ] 静止抓住。而且,我们证明任何 O 定期变化的伪单调条件暗示这个条件,这样 tne quasimonotonicity 的含糊的牵连能在实践被避免。 | Ruijun Le Songping Zhou | 2006 | Analysis in Theory and Applications2006，22，1： | 2 |
| 2 | SOME NEW CONDITIONS IN FOURIER ANALYSIS AND APPLICATIONS显示文摘我们作为 monotonicity 状况的归纳在 Fourier 分析调查一些条件。特别,我们给 GBVS 的一些应用,序列满足条件并且。给词调音三角法的系列 - 一致集中 - L 鈥 ? 集中 AMS (2000 ) 题目分类 42A20 - 中国(10471130 ) 的 NSF 部分地支持的 42A32。近似理论和遥感应用上的国际会议上的邀请报告, Kungming,中国, | Songping Zhou Dansheng Yu Ruijun Le | 2007 | Analysis in Theory and Applications2007，23，1： | 1 |
| 3 | Geometric Accuracy and Energy Absorption Characteristics of 3D Printed Continuous Ramie Fiber Reinforced Thin-Walled Composite Structures显示文摘The application of continuous natural fibers as reinforcement in composite thin-walled structures offers a feasible approach to achieve light weight and high strength while remaining environmentally friendly.In addition,additive manufacturing technology provides a favorable process foundation for its realization.In this study,the printability and energy absorption properties of 3D printed continuous fiber reinforced thin-walled structures with different configurations were investigated.The results suggested that a low printing speed and a proper layer thickness would mitigate the printing defects within the structures.The printing geometry accuracy of the structures could be further improved by rounding the sharp corners with appropriate radii.This study successfully fabricated structures with vari-ous configurations characterized by high geometric accuracy through printing parameters optimization and path smoothing.Moreover,the compressive property and energy absorption characteristics of the structures under quasi-static axial compression were evaluated and compared.It was found that all studied thin-walled structures exhibited progressive folding deformation patterns during compression.In particular,energy absorption process was achieved through the combined damage modes of plastic deformation,fiber pullout and delamination.Furthermore,the com-parison results showed that the hexagonal structure exhibited the best energy absorption performance.The study revealed the structure-mechanical property relationship of 3D printed continuous fiber reinforced composite thin-walled structures through the analysis of multiscale failure characteristics and load response,which is valuable for broadening their applications. | Kui Wang Hao Lin Antoine Le Duigou Ruijun Cai Yangyu Huang Ping Cheng Honghao Zhang Yong Peng | 2023 | Chinese Journal of Mechanical Engineering2023，36，6： | 0 |
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