DEVELOPMENT AND VALIDATION OF A SIMULATION METHOD FOR DYNAMIC TENSILE AND FRACTURE TESTS USING EXPLICIT AND IMPLICIT FINITE ELEMENT CODESReportar como inadecuado




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Abstract : A method for the simulation of dynamic tensile and fracture tests at intermediate strain rates is described. The whole impact event which takes place during dynamic tensile tests with smooth round bar specimens and fracture tests with double edge notched tensile DENT specimens at a 33 MJ-rotating disk impact machine is simulated by means of an explicit finite element code. A comparison with experimental results was made. Additional information about loading conditions could be obtained and a homogeneous stress distribution along the gauge length of the tensile specimen was found. Displacements at suitable interfaces of the DENT-specimens were obtained and used as boundary conditions for a finite element analysis with a fine mesh with an implicit time integration scheme to calculate fracture mechanics parameters as well as stresses, strains and displacements in the vicinity of the notch tip.





Autor: K. Kussmaul A. Klenk M. Schüle H. Klamser

Fuente: https://hal.archives-ouvertes.fr/



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