A force-displacement compound control method based on the vector form intrinsic finite element method

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (8) : 188-192.

QU Ji ting, HU Qiang, SONG Quan bao

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Abstract

Vector form intrinsic finite element (VFIFE) is a new numerical analytical method based on vector mechanics and point value description.This method has a great advantage in solving the problems of structural nonlinear discontinuity, such as large deformation, large displacement, fracture and collision, and the dynamic prediction of mechanism.According to the method of force control and displacement control in structural tests, a method of force-displacement compound control was put forward and an analytical model was established based on the VFIFE method in this paper.This compound control method includes an alternating force-displacement control method and a force-displacement mixed control method.On this basis, the large deformation of a structure was solved, and a numerical example was given to verify the proposed method.

Key words

vector form intrinsic finite element / force control method / Displacement control method / nonlinear analysis / large deformation.

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QU Ji ting, HU Qiang, SONG Quan bao. A force-displacement compound control method based on the vector form intrinsic finite element method[J]. Journal of Vibration and Shock, 2019, 38(8): 188-192

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