An element tangent stiffness equation was derived based on the secant stiffness equation of stability function elements with shear deformation effects considered.
Through improving the displacement loading control method based on the tangent stiffness, this paper has presented displacement loading control method based on the secant stiffness.
In this paper, the tangent stiffness matrices and the secant stiffness matrices of space trusses are derived with the energy principle in the Total Lagrangian coordinates.
The precise tangent stiffness matrix of space cable element is derived in this paper by using equilibrium equation.
The tangent stiffness matrix is obtained from the engineering strain and the principle for determining the limit point and bifurcation point is given.
The paper deduces tangent stiffness matrix and set up geometrical nonlinear model of construction control calculation of the cable-stayed bridge.
