A model of edge-to-edge contact for three-dimensional discontinuous deformation analysis

Modeling the interaction between fluid flow and particle movement with discontinuous deformation analysis (DDA) method

“…The DDA was originally created by Shi and Goodman [7,8] and further developed by many researchers [16][17][18][19][20][21][22][23][24] (MacLauglin and Doolin reviewed the developments and applications of DDA comprehensively in Reference [25]). DDA method shares many common features with FEM for stress and deformation analysis of a deformable continuum body, and with distinct element method (DEM) for the block-fracture system configuration and treatment of inter-block contacts.…”

A shrunken edge algorithm for contact detection between convex polyhedral blocks

“…24, the numerical results are compared with the timedependent displacement predicted by the analytical solution in Eq. (32). The dots denote the numerical results, and the solid lines represent the corresponding analytical solution.…”

“…Wu [31] presented a new edge-to-edge contact calculation algorithm in which edge-to-edge contacts were transformed into vertex-to-face contacts. Yeung et al [32] developed an edgeto-edge contact model that included methods for detecting the contact type and predicting the face where the first entrance would occur, as well as criteria for interpenetration. Contact transformation improved the efficiency of the calculation procedure.…”

Study on Contact Between Double Metal Composite and Pipe Power Slip for Offshore Well

“…Field investigation found that the drilling safety and cost will be generated by a greater impact because of the slip teeth plate, at present, in the process of clamping double metal composite pipe, the damage of double metal composite pipe surface will be generated, which reduces the drilling capacity, and it is one of the causes of pipe failure in the drilling process. Finally, because of the delay of drilling and drilling tool failure, huge economic losses will be produced [1,2,3].…”