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| A substructure technique for the contact\|impact of a flexible body with a rigid ball |
| Revised:February 20, 1999 |
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| DOI：10.7511/jslx20011006 |
| KeyWord:a substructure method,impact force,modal coordinates |
| LIU Jin\|yang |
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| Abstract: |
| In this paper, a substructure method is used for the longitudinal and transverse impact of a bar(or a beam) with a rigid ball. The equation of motion expressed with modal coordinates is derived, which has fewer degree of freedom. It is shown that with the same element number, 8 substructure model is proper for the longitudinal impact. According to the rule, the transverse impact force is also presented which reveals that the time history of the impact force is not a smooth curve. It is shown that when the modulus of elasticity increases, the impact force becomes greater and the contact duration is shortened. |
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