| 黄花梨的撞击力学特性研究 |
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| 引用本文： | 王剑平,王俊,陈善锋,陆秋君.黄花梨的撞击力学特性研究[J].农业工程学报,2002,18(6):32-35. |
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| 作者姓名： | 王剑平 王俊 陈善锋 陆秋君 |
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| 作者单位： | 1. 浙江大学
2. 山东理工大学 |
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| 基金项目： | 国家自然科学基金项目(30170533);浙江省自然科学基金项目(300296) |
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| 摘 要： | 农产品在收获、分级、包装、运输和加工中将发生机械损伤,而碰撞是导致机械损伤的主要原因之一。该文以黄花梨为试验对象,进行了不同下落高度、不同梨质量和坚实度等对碰撞参数指标如力峰值、到达力峰值时间、碰撞总时间、力峰值/到达力峰值时间的比值等影响的碰撞特性试验。试验表明3个试验因子对力峰值/到达力峰值时间的比值、损伤体积和力峰值的影响大都为显著。碰撞参数指标内部之间的相关性不尽相同。碰撞损伤预测模型可采用V=β0+β1h+β2m+β3f来表达
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| 关 键 词： | 梨 碰撞 损伤 模型 力学特性 |
| 文章编号： | 1002-6819(2002)04-0032-04 |
| 收稿时间： | 2002/2/26 0:00:00 |
| 修稿时间： | 2002年2月26日 |
Impact Characteristics of Huanghua Pear |
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| Wang Jianping,Wang Jun,Chen Shanfeng and Lu Qiujun.Impact Characteristics of Huanghua Pear[J].Transactions of the Chinese Society of Agricultural Engineering,2002,18(6):32-35. |
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| Authors: | Wang Jianping Wang Jun Chen Shanfeng and Lu Qiujun |
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| Abstract: | Bruises occur during harvesting, handling, grading, and transporting. The conditions necessary for pears to possess a high resistance to bruising remain unknown. It would be useful to know the variability of pear bruise resistance in relation to dropping height, mass, firmness and location around the fruit. The effects of dropping height, mass, firmness, fruit dropping orientation on bruise volume and various impact parameters (contact time, time to peak force, peak force, F/T) were determined for pears. Most of the impact parameters changed with dropping height, mass and firmness of fruit. The bruise volume could be predicted by multiple regression model based on dropping height, mass and firmness of pear. |
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| Keywords: | pear impact bruising model dynamics characteristics |
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