Modelling of Contact Interaction with Allowance for Nonlinear Compliance in Unilateral Constraints

International Multi-Conference on Industrial Engineering and Modern technologies

Lukashevich, A.A.^1 ; Lukashevich, N.K.^1 ; Timokhina, E.I.^1

Department of Mechanics, St. Petersburg State University of Architecture and Civil Engineering, 2-nd Krasnoarmeiskaya St. 4, St. Petersburg

190005, Russia^1

关键词: Contact finite elements;    Iterative refinement;    Nonlinear characteristics;    Nonlinear properties;    Numerical algorithms;    Physical nonlinearity;    Step-by-step analysis;    Unilateral constraints;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/463/4/042054/pdf
DOI  :  10.1088/1757-899X/463/4/042054

来源: IOP

【 摘 要 】

The finite element model and numerical solution of the contact problem in the presence of nonlinear deformable layer between interacting bodies are considered. To discretize the contact layer, frame-rod contact finite elements are used, which also model different contact states (separation, clutch, friction-slip, etc.). The use of frame-rod contact elements allows the physical nonlinearity of the contact layer to be reduced to the internal nonlinearity of the system of contact elements, while the nonlinear properties of the seam will be set through the nonlinear characteristics of the individual rods of the contact elements. The numerical algorithm for solving the contact problem is based on the method of step-by-step analysis with iterative refinement of the solution for the current load level. With its help, the numerical solutions of the problem of contact of the structure with the base under different conditions of the contact seam have been obtained and analyzed.