The Investigation of the Influence of a Local Elastic Nonlinearity on Vibrations of Plane Truss Members
The paper concerns theoretical investigations of plane trusses subject to longitudinal de-formations, using nonlinear discrete-continuous models. An external excitation is applied to a rigid body located in a truss joint. In this joint a visco-elastic discrete element with a spring having a nonlinea...
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Fundamental Technological Research
2015-03-01
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| Series: | Engineering Transactions |
| Subjects: | |
| Online Access: | https://et.ippt.pan.pl/index.php/et/article/view/498 |
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| Summary: | The paper concerns theoretical investigations of plane trusses subject to longitudinal de-formations, using nonlinear discrete-continuous models. An external excitation is applied to a rigid body located in a truss joint. In this joint a visco-elastic discrete element with a spring having a nonlinear symmetric stiffness is also located. It is assumed that the spring characteristic is of a soft type. Four nonlinear functions describing this characteristic are proposed. In the considerations the wave method is applied similarly to the case of a hard characteristic in [1]. The numerical analysis focus on the investigation of the effect of the local nonlinearity with a soft characteristic for two examples of plane trusses. |
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| ISSN: | 0867-888X 2450-8071 |