scholarly journals Optimization design of digging mechanism for onion harvester based on finite element simulation technology

Author(s):  
Yong Yang ◽  
Tianxin Kou ◽  
Shuai Peng ◽  
Chao Wang ◽  
Guofang Hu
Author(s):  
Xing-Dong Liu ◽  
Shu-Jun Li ◽  
Lu-Jia Han ◽  
Quan-Rong Jing ◽  
Dao-Yi Li ◽  
...  

2012 ◽  
Vol 262 ◽  
pp. 377-381
Author(s):  
Wei Cheng Bao ◽  
Hong Chen ◽  
Yan Mei Liang

The precondition of improve the printing press velocity is to maintain the minimum vibration of infeed unit within the range of press speed. Taking advantage of the equivalent relation between the formula of infinitesimal energy and the classic beam theory, the vibration of convey paper belt can be converted into the problem of the beam be stretched and be compressed, and then we utilize the finite element simulation technology to conduct model analysis for the convey paper belt. When the numerical of the belt speed gain ,both the vibration and shape distortion reach the maximum, as well as speed of the infeed unit will be influenced most.


2013 ◽  
Vol 395-396 ◽  
pp. 1206-1211 ◽  
Author(s):  
Yang Li ◽  
Zhong Lei Wang ◽  
Xiao Li ◽  
Gang Cheng

For the difficulty of calculating the size of the Pre-Manufactured hole of flanging, the formula was derived by using the theory of equal line length and the theory of equal area. And the formula was verified by finite element simulation. Due to theoretical formula has certain error, the optimal design method based on interpolation was put forward and optimization design the size of the Pre-Manufactured hole of flanging. Engineering example shows that this optimization design method is accuracy and convergence speed, and it can quickly calculate the the size of the Pre-Manufactured hole of flanging.


2018 ◽  
Vol 2018 ◽  
pp. 1-14
Author(s):  
Zhi-Jun Lyu ◽  
Qi Lu ◽  
YiMing Song ◽  
Qian Xiang ◽  
Guanghui Yang

The rack columns have so distinctive characteristics in their design, which have regular perforations to facilitate installation of the rack system that it is more difficult to be analyzed with traditional cold-formed steel structures design theory or standards. The emergence of industrial “big-data” has created better innovative thinking for those working in various fields including science, engineering, and business. The main contribution of this paper lies in that, with engineering data from finite element simulation and physical test, a novel data-driven model (DDM) using artificial neural network technology is proposed for optimization design of thin-walled steel specific perforated members. The data-driven model based on machine learning is able to provide a more effective help for decision-making of innovative design in steel members. The results of the case study indicate that compared with the traditional finite element simulation and physical test, the DDM for the solving the hard problem of complicated steel perforated column design seems to be very promising.


2020 ◽  
Vol 142 (5) ◽  
Author(s):  
Guodong Zhu ◽  
Caifu Qian ◽  
Mingde Xue

Abstract Strength calculation for tubesheets in floating-head heat exchangers (FHXs) in current standards is based on analytical theory which assumes that the two tubesheets are symmetrical with same thickness, same material. This assumption results in a design that is not optimized for the requirement of the FHXs. In this paper, a new analytical theory is proposed which is able to perform strength calculation for tubesheets of different size and materials in FHXs. Comparison of the analytical stresses with those obtained by finite element simulation shows that the new theory proposed here is reliable and applicable. In addition, this new theory covers the symmetric one adopted in current standards such as ASME and is effective for the optimization design of the floating tubesheet (FT) as well as other relevant elements in the FHXs.


2014 ◽  
Vol 538 ◽  
pp. 62-67
Author(s):  
Ji Peng Huang ◽  
Gang Liu ◽  
Shuang Qiao

The model of neutron tube accelerating system was established to research what the effect of neutron tube accelerating gap, voltage and size of accelerating electrode on trajectory of deuterium tritium ion with finite element simulation technology. Some useful conclusions obtained from the simulation results provide the basis for optimizing the neutron tube structure and parameter, which can make neutron yields of 50-mm-diameter tube in the order of 109 n/s and the stability is not more than 2%.


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