stiffness matrix การใช้

• The number of DOF equals the size of the stiffness matrix.
• The stiffness matrix is for only one pair of contact springs.
• The resulting equation contains a four by four stiffness matrix.
• The stiffness matrix in this case is six by six.
• The mass and stiffness matrix for this problem are then:
• The tangent stiffness matrix appears when solving certain problems.
• The stiffness matrix depends on the contact spring stiffness and the spring location.
• The 3D stiffness matrix may be deduced similarly.
• The condition number of the stiffness matrix depends strongly on the quality of the numerical grid.
• Matrix \ mathbf Z ( \ omega ) is referred to as the dynamic stiffness matrix.
• The full stiffness matrix " A " is the sum of the element stiffness matrices.
• In particular, for basis functions that are only supported locally, the stiffness matrix is sparse.
• The forces and displacements are related through the element stiffness matrix which depends on the geometry and properties of the element.
• For example, the tangent stiffness matrix is the generalization of slope that can be used with Newton's method.
• However, the global stiffness matrix is determined by summing up the stiffness matrices of individual pairs of springs around each element.
• Consequently, the developed stiffness matrix has total effects from all pairs of springs, according to the stress situation around the element.
• In particular, triangles with small angles in the finite element mesh induce large eigenvalues of the stiffness matrix, degrading the solution quality.
• Note that the stiffness matrix will be different depending on the computational grid used for the domain and what type of finite element is used.
• The elasticity stiffness matrix C _ { ij } has 5 independent constants, which are related to well known engineering elastic moduli in the following way.