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《Transactions of the Chinese Society for Agricultural Machinery》 2014-08
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Finite Element Modal Analysis and Structure Optimization of Spray Boom

Qiu Baijing;He Yaojie;Sheng Yunhui;Yin Zhenhua;Deng Wuqing;Key Laboratory of Modern Agricultural Equipment and Technology,Ministry of Education,Jiangsu University;  
In order to study dynamic characteristic of spray boom,a parametric finite element model of spray boom was built in ANSYS,and the model was validated by experimental modal analysis. According to the result of spray boom modal analysis,the structure of the spray boom was optimized in ANSYS,in the condition of increasing the spray boom mass for 8. 4%,increasing the first mode frequency from9. 16 Hz to 10. 41 Hz,and avoiding from the resonance vibration section. Then,the deformation of the spray boom in operating before and after optimization was compared and analyzed in ADAMS. The result showed that the max horizontal deformation at the spray boom end before optimization Dbmax was39. 6 mm,and the root-mean-square was 12. 6 mm. The max horizontal deformation at the spray boom end after optimization Damaxwas 10. 1 mm,and the root-mean-square was 2. 9 mm. The horizontal deformation was reduced.
【Fund】: 国家公益性行业(农业)科研专项资助项目(201203025-04);; 江苏省科技支撑计划资助项目(BE2011334);; 国家农业科技成果转化资金资助项目(2012GB2C100154);; 江苏省高校自然科学研究重大资助项目(10KJA470007);; 江苏省高校优势学科建设工程资助项目(苏财教(2011)8号)
【CateGory Index】: S49
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