Finite element analysis of the split Hopkinson bar
The finite element method was investigated for its ability to analyze the split Hopkinson bar apparatus used in studying the dynamic properties of materials. This is a stress-wave problem in two dimensions complicated by material interfaces. The finite element method has not been widely used in studying transient problems, particularly the wave phenomena found in cylindrical bars. An explicit isoparametric finite element computer code, HONDO, was investigated for its accuracy in solving stress-wave propagation problems in cylindrical bars in one and two dimensions. Once verified, HONDO was then checked against a two-dimensional finite difference wave code, TOODY, for solution accuracy and computational time in analyzing the split Hopkinson bar. HONDO is capable of using fewer mesh points than TOODY. While computer time is comparable, HONDO requires less storage, an advantage to experimentalists with smaller computer facilities.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6222662
- Report Number(s):
- LA-8921-MS; ON: DE81030387
- Country of Publication:
- United States
- Language:
- English
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