ANALYSIS OF STRESS STATE AND INERTIAL PROPERTIES OF A PENDULUM USED FOR CHARPY IMPACT TEST ON PLASTICS

Authors

  • Vasile Cojocaru Eftimie Murgu University of Resita
  • Gabriel Cacareaza Eftimie Murgu University of Resita

Keywords:

pendulum, Charpy impact test, plastics, inertial properties, stress, displacements

Abstract

The laboratory equipment used for testing the impact behavior of plastics uses low impact energies. In the last years were developed constructive solutions of monobloc pendulums, in order to ensure design and manufacturing simplicity. The paper presents the possibilities of optimizing a 15 J pendulum using 3D CAD design and finite element analysis. It highlights the possibilities for quick determination of the pendulum inertial properties ensuring the correlation between the position of mass center and the position of impact center of pendulum. A finite element analysis of maximum stress and displacement was performed correlated with the study of inertial properties.

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Author Biography

Vasile Cojocaru, Eftimie Murgu University of Resita

Lecturer at Department of Mechanical Engineering and Material Science

References

Cacareaza, G. (2016). Design of a Charpy Impact

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*** Zwick/Roell, HIT Pendulum Impact Testers from

to 50 J, FP 5732.0116, www.zwick.com

*** Instron, CEAST 9000 Series, Pendulum Impact

Systems, www.instron.com; Accessed: 2016-10-12

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Published

2016-11-01

Issue

Vol. 11 No. 2 (2016): Issue 2

Section

Research Papers

License

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