AN IMPROVED DYNAMIC CONTACT MODEL FOR MASS–SPRING AND FINITE ELEMENT SYSTEMS BASED ON PARAMETRIC QUADRATIC PROGRAMMING METHOD
AN IMPROVED DYNAMIC CONTACT MODEL FOR MASS–SPRING AND FINITE ELEMENT SYSTEMS IS PROPOSED IN THIS PAPER. THE PROPOSED MODEL AVOIDS THE NUMERICAL TROUBLES OF SPURIOUS HIGH-FREQUENCY OSCILLATIONS FOR MASS–SPRING AND FINITE ELEMENT SYSTEMS IN DYNAMIC CONTACT PROBLEMS BY USING THE PARAMETRIC QUADRATIC PROGRAMMING TECHNIQUE. THE ITERATIVE PROCESS FOR DETERMINATION OF CONTACT STATES ARE NOT REQUIRED FOR EACH TIME STEP IN THE PROPOSED METHOD, AS THE CONTACT STATES ARE TRANSFORMED INTO THE BASE EXCHANGES IN THE SOLUTION OF A STANDARD QUADRATIC PROGRAMMING PROBLEM. THE PROPOSED METHODOLOGY IMPROVES STABILITY AND HAS GOOD CONVERGENCE BEHAVIOR FOR DYNAMIC CONTACT PROBLEMS. NUMERICAL RESULTS DEMONSTRATE THE VALIDITY OF THE PROPOSED METHOD.
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