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Modeling of spacesuit flat pattern mobility joint based on finite element method
Received date: 2014-04-15
Revised date: 2014-06-23
Online published: 2015-03-31
Flexibility of mobility joint is one of the important directions to improve the spacesuit design, and flat pattern mobility joint is a kind of typical soft joint of spacesuit. In order to make a comprehensive understanding of the mobility property of flat pattern mobility joint, a simulation model of flat pattern mobility joint, which reflects its main features of material and structure, is built based on the finite element method. And the relationship between torque and angle is obtained by calculation. To verify the model, torque of joint prototype is measured and error sources of model are analyzed. The finite element method and classical analytical methods are compared and the composition of torque is also discussed. Results show that the finite element model can describe essential characteristics of joint movement. Although the accuracies of joint torque during the initial state of joint bending and the latter period of joint extending need to be improved, it shows more advantages than the classical analytical methods. In addition, it can be concluded from the result analysis that torque of flat pattern mobility joint is induced by compressing gas, friction of materials and elastic deformation of structure.
SHANG Kun , LIU Xiangyang , LI Meng . Modeling of spacesuit flat pattern mobility joint based on finite element method[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(3) : 1002 -1010 . DOI: 10.7527/S1000-6893.2014.0128
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