RESULTS OF STATIC TESTS OF PROTECTIVE STRUCTURES OF AGRICULTURAL TRACTORS CABINS

S. Postelga
{"title":"RESULTS OF STATIC TESTS OF PROTECTIVE STRUCTURES OF AGRICULTURAL TRACTORS CABINS","authors":"S. Postelga","doi":"10.31473/2305-5987-2021-1-29(43)-7","DOIUrl":null,"url":null,"abstract":"The purpose of research is determination of cabin deformation indicators using standardized methods and developed technical means. Research methods. The tests were performed according to the methods described in [DSTU ISO 5700, 2019] using a loading bench, pressure and displacement sensors, digital measuring amplifier Spider 8 and laptop Panasonic CF-19 Touchbook, model: CF-19KHR88PE. Research results. The protective structure AI.209.45.011.00 of the cab of tractors type C25 \"Slobozhanets\" was provided for testing. Before the tests, the dimensions of the cab structure were measured and recorded. During the first longitudinal loading from front to right, the load was applied to the upper transverse element of the protective structure. The point of application of the load was at a distance of 260 mm from the outer corner of the edge of the protective structure. An even load distribution in the direction perpendicular to the direction of action and along the loading beam was ensured using a sealing element. The value of the energy absorbed by the protective structure was 13100 J (required energy - 12586 J) with a maximum applied force of 82 kN and a displacement of 340 mm. During the first and second compression tests, the structure was loaded vertically with a force of 180 kN along the front and rear upper transverse elements of the protective structure with a holding of the specified force for 5 s. The side load was applied horizontally to the upper right longitudinal element of the protective structure at a distance of 85 mm forward from the control point of the driver's seat. The length of the loading beam was 600 mm. The value of the energy absorbed by the protective structure of 17000 J (required energy - 15732 J) at a maximum applied force of 80 kN and a displacement of 290 mm was achieved. After all test stages, the frontmost point of the protective structure was 70 mm and the front left point was 35 mm. The rear end points were also shifted backwards by 45 mm - right and 30 mm - left. In the lateral direction, the front right extreme point moved forward by 15 mm. After the tests, the free space area was not violated. Conclusions. The methods and technical means used during the tests allow determine the magnitude of the applied forces and deformation with the necessary accuracy and reliability. During the compression tests, the values of the test force (180 kN) were achieved, and during the application of horizontal loads - the energy absorbed by the protective structure (13100 J - longitudinal load and 17000 J - lateral load). The greatest final deformation was suffered by the protective structure at the front extreme point - 70 mm, while the violation of the zone of free space of the driver by the elements of the protective structure is not observed. Therefore, the protective structure AI.209.45.011.00 cab of tractors type C25 \"Slobozhanets\" withstood static tests for compliance with DSTU ISO 5700.","PeriodicalId":34711,"journal":{"name":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Tekhnikotekhnologichni aspekti rozvitku ta viprobuvannia novoyi tekhniki i tekhnologii dlia sil''s''kogo gospodarstva Ukrayini","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.31473/2305-5987-2021-1-29(43)-7","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

The purpose of research is determination of cabin deformation indicators using standardized methods and developed technical means. Research methods. The tests were performed according to the methods described in [DSTU ISO 5700, 2019] using a loading bench, pressure and displacement sensors, digital measuring amplifier Spider 8 and laptop Panasonic CF-19 Touchbook, model: CF-19KHR88PE. Research results. The protective structure AI.209.45.011.00 of the cab of tractors type C25 "Slobozhanets" was provided for testing. Before the tests, the dimensions of the cab structure were measured and recorded. During the first longitudinal loading from front to right, the load was applied to the upper transverse element of the protective structure. The point of application of the load was at a distance of 260 mm from the outer corner of the edge of the protective structure. An even load distribution in the direction perpendicular to the direction of action and along the loading beam was ensured using a sealing element. The value of the energy absorbed by the protective structure was 13100 J (required energy - 12586 J) with a maximum applied force of 82 kN and a displacement of 340 mm. During the first and second compression tests, the structure was loaded vertically with a force of 180 kN along the front and rear upper transverse elements of the protective structure with a holding of the specified force for 5 s. The side load was applied horizontally to the upper right longitudinal element of the protective structure at a distance of 85 mm forward from the control point of the driver's seat. The length of the loading beam was 600 mm. The value of the energy absorbed by the protective structure of 17000 J (required energy - 15732 J) at a maximum applied force of 80 kN and a displacement of 290 mm was achieved. After all test stages, the frontmost point of the protective structure was 70 mm and the front left point was 35 mm. The rear end points were also shifted backwards by 45 mm - right and 30 mm - left. In the lateral direction, the front right extreme point moved forward by 15 mm. After the tests, the free space area was not violated. Conclusions. The methods and technical means used during the tests allow determine the magnitude of the applied forces and deformation with the necessary accuracy and reliability. During the compression tests, the values of the test force (180 kN) were achieved, and during the application of horizontal loads - the energy absorbed by the protective structure (13100 J - longitudinal load and 17000 J - lateral load). The greatest final deformation was suffered by the protective structure at the front extreme point - 70 mm, while the violation of the zone of free space of the driver by the elements of the protective structure is not observed. Therefore, the protective structure AI.209.45.011.00 cab of tractors type C25 "Slobozhanets" withstood static tests for compliance with DSTU ISO 5700.
农用拖拉机驾驶室防护结构静力试验结果
研究的目的是使用标准化的方法和发达的技术手段来确定座舱变形指标。研究方法。根据[DSTU ISO 570019]中描述的方法,使用加载台、压力和位移传感器、数字测量放大器Spider 8和笔记本电脑Panasonic CF-19 Touchbook(型号:CF-19KHR88PE)进行测试。研究结果。为试验提供了C25“Slobozhanets”型拖拉机驾驶室的保护结构AI.209.45.011.00。试验前,对驾驶室结构的尺寸进行了测量和记录。在从前到右的第一次纵向载荷期间,载荷被施加到保护结构的上部横向元件上。载荷的施加点距离保护结构边缘的外角260mm。使用密封元件确保了在垂直于作用方向的方向上以及沿着负载梁的均匀负载分布。保护结构吸收的能量值为13100 J(所需能量-12586 J),最大施加力为82 kN,位移为340 mm。在第一次和第二次压缩试验期间,沿保护结构的前上横向元件和后上横向元件,用180 kN的力垂直加载该结构,并保持规定的力5 s。在距离驾驶员座椅的控制点向前85mm的距离处,将侧向载荷水平施加到保护结构的右上纵向元件上。加载梁的长度为600 mm。在80 kN的最大作用力和290 mm的位移下,保护结构吸收的能量值为17000 J(所需能量-15732 J)。在所有测试阶段之后,保护结构的最前端点为70 mm,左前端点为35 mm。后端点也向后移动了45 mm(右)和30 mm(左)。在横向方向上,右前极值向前移动了15 mm。测试后,未侵犯自由空间区域。结论。试验过程中使用的方法和技术手段能够以必要的精度和可靠性确定施加的力和变形的大小。在压缩试验过程中,获得了试验力(180 kN)的值,在施加水平载荷时,获得了保护结构吸收的能量(13100 J-纵向载荷和17000 J-横向载荷)。最大的最终变形发生在保护结构的前极值点70mm处,而没有观察到保护结构的元件侵犯驾驶员的自由空间区域。因此,C25型“Slobozhanets”拖拉机的防护结构AI.209.45.011.00驾驶室经受住了符合DSTU ISO 5700的静态测试。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
20
审稿时长
4 weeks
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信