李耀明,王显仁,徐立章.加载/卸载作用次数对水稻谷粒机械损伤的影响[J].农业机械学报,2007,38(10):61-63.
.[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(10):61-63.
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加载/卸载作用次数对水稻谷粒机械损伤的影响   [下载全文]
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DOI:10.3969/j.issn.1000-1298.[year].[issue].[sequence]
中文关键词:  稻谷  损伤  交变载荷  滞回特性
基金项目:
李耀明  王显仁  徐立章
江苏大学
中文摘要:水稻谷粒在收获、加工、储运过程中的损伤不仅与其所受载荷的大小有关,也与载荷作用次数有关。对水稻谷粒进行多次加载、卸载作用下的压缩试验,研究了水稻谷粒的滞回耗能特性,分析了水稻谷粒的机械损伤机理。通过试验建立了载荷、加载循环次数对水稻谷粒损伤率影响规律的数学模型,并对模型进行了F检验。通过该模型导出了水稻谷粒损伤率为1%时载荷与加载次数间的关系曲线。
Key Words:
Abstract: During harvesting, handling and transporting, injury of rice grain is not only due to size of the force acting on it but also the number of the loading cycles. The hysteresis energy consuming behavior of rice grain was studied by means of experiments. An investigation on the principles of grain injury was made. The multiply elements quadratic model between the load amplitude, number of the load cycles and the injury percentage of rice grain was developed. Statistical value F was made in order to prove the correctness of the multiply element quadratic model. The relationship between the load amplitude and number of the load cycles was obtained when injury percentage of rice grain was equal to 1%, which provided a base for designs of harvesting, handling and transporting devices.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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