Element size effect on the analysis of heavy-duty machine cross-rail

DOI

10.2991/icmmct-16.2016.191How to use a DOI?

Keywords

Heavy-duty machine cross-rail , Finite element , Element size.

Abstract

Heavy-duty gantry machine plays an important role in the energy, shipbuilding, aerospace, transportation and military industry and other pillar industries, and is a manifestation of national equipment manufacturing capacity. Cross-rail is one of the key structural components, and its natural frequency affects the dynamic performance of the machine. It is difficult to obtain the accurate analysis of natural frequency by using the analytical method because of the complex internal structure. The finite element method is a general method to obtain natural frequency, but, is also difficult to obtain the precise result, because the analysis result depends on many factors, such as meshing manners, the constraint conditions, joint parameters, damping, and so on. The density of mesh is an important factor to affect the analysis result especially. Theoretically, the smaller element, the closer to the true result. But more dense grid could sharply increase the degree of freedom, and result in the insufferable solving speed in the analysis of the cross-rail. So to find a balance point between the speed and the accuracy becomes very meaningful. In this paper, the modal analysis was carried out on the cross-rail. The paper focus on exploring the influence of different element size on the results of the analysis. In order to verify the correctness of the modeling, the modal testing is carried on the cross-rail, and the experimental result is adopted to prove the correctness of finite element modeling.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jianhua Wang
AU  - Jianke Chen
AU  - Tieneng Guo
AU  - Bin Song
AU  - Dongliang Guo
PY  - 2016/03
DA  - 2016/03
TI  - Element size effect on the analysis of heavy-duty machine cross-rail
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Computing Technology
PB  - Atlantis Press
SP  - 963
EP  - 969
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-16.2016.191
DO  - 10.2991/icmmct-16.2016.191
ID  - Wang2016/03
ER  -